HomeMy WebLinkAboutAppendix B _ FinalBATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 1
Section 26 0500 - Common Work Results For Electrical
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Basic electrical materials and methods.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification.
1. Principal features of this installation include:
a. Selective Demolition of existing electrical systems.
b. Raceways, boxes, gutters, enclosures, power wire, cable, and
conductors.
c. Circuit breakers.
d. Grounding
e. Underground system installation.
f. Connection of equipment.
g. Electrical Acceptance.
1.2 RELATED SECTIONS
A. Related Sections Under Other Divisions:
1. The drawings and general provisions, including supplementary conditions,
of this contract apply to this section.
2. Grading, patching, and repairing of existing surfaces, including but not
limited to: asphalt, concrete, and vegetation, as required by the Civil
Engineer.
3. Painting of exposed electrical equipment/raceways as required by the
Owner
4. Concrete work including but not limited to: equipment pads as required
by the Civil Engineer.
1.3 SYSTEM DESCRIPTION
A. Furnish, install, and test materials and equipment in accordance with the
drawings and this specification in order to provide a complete, working
installation.
B. Notify the Civil Engineer of discrepancies within the drawings, this specification,
and/or actual field conditions.
C. Install equipment at locations indicated on the drawings as closely as field
conditions permit. Obtain acceptance of equipment dimensions prior to
installation through submittal review. California Electrical Code (CEC) minimum
working clearances shall be maintained.
D. Electrical drawings are diagrammatic in nature and do not reflect minor
variations in equipment alignment/installation that may be necessary. Review
existing field conditions and make proper adjustments as required to avoid
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GECE PROJECT NO. 2437
COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 2
conflict with other trades or portions of work, satisfy the design requirements,
and meet code minimums. Obtain acceptance of adjustments from the Civil
Engineer.
E. Comply with all manufacturer requirements and installation guidelines as per
Charge Point.
F. Permits shall be obtained for electrical work. Arrange inspections with the
authority having jurisdiction and obtain acceptance.
G. Two copies of an Operating and Installation Manual shall be provided to the
owner prior to final acceptance. Manuals shall reflect the installed system and
include the following:
1. Submittal documentation reflecting installed materials, equipment, and
systems.
2. Certificate of product and installation warranties
1.4 REQUIREMENTS
A. PERFORMANCE
1. Final equipment feeder or branch circuit connections shall be
coordinated with manufacturer nameplate data and specifications.
B. SUBMITTALS AND SHOP DRAWINGS
1. Shop drawings and product data (including manufacturer specification
sheets) shall be submitted demonstrating compliance with the
construction documents. Obtain approval from the Engineer prior to
procurement.
a. Electronic submittal packages will be accepted.
b. Submittals shall be complete. Partial submittals will not be
accepted.
c. Identification shall be made on submittal documentation indicating
compliance with contract documents and intended use.
Highlighted text, notation, etc. are acceptable.
d. The Engineer will review two rounds of product submittals. Should
subsequent review be required beyond this to obtain acceptance,
the contractor shall be responsible to compensate the engineering
for time spent a at the engineer’s standard hourly billing rate.
e. Equipment, materials, and components identified in the
construction documents with specific manufacturer product
numbers limit their use only as to the design, workmanship, and
quality, not manufacturer unless otherwise noted specifically.
Alternate products will be reviewed and evaluated during the
submittal review process, pursuant to conformance with the
contract documents. The project team reserves the right to request
product samples for evaluation at no cost. The final decision will be
made by the Owner. In the event that an alternate product is
accepted, the following will be required:
1. Coordination with other trades. Costs incurred as a result of
the substitution will be the responsibility of the Contractor.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 3
2. Dimensions shall be field verified to ensure product will fit and
maintain code required working clearances.
3. Approval of a substituted product does not alleviate the
contractor from providing a complete, working installation
compliant with the contract documents, design intent,
applicable codes, standards, and local ordinances.
2. Submittals shall include the following:
a. Manufacturer equipment specifications, including but not limited to
the following: circuit breakers.
1. Grounding.
2. Conduit raceway, innerduct, fittings, and straps.
3. Ducts and trench racks.
4. Methods for conductor separation and barriers.
5. Conductors and terminations.
6. Junction boxes, pull boxes, gutters, and vaults.
7. Finish samples and color charts.
3. Coordination with other trades to the fullest of ability is required to result in
a complete, functioning, and professional installation.
4. The construction documents are based on the most accurate information
available when prepared. Minor adjustments are frequently made due to
changes with respect to architectural plans, construction, and equipment
furnished by others. This shall be recognized when bidding and during
construction. No change in contract price will be allowed for alternate
work which requires approximately the same work to adjust/relocate as a
result of construction coordination work. Adequate contingency in the bid
price shall allow for such coordination and adjustments.
5. Record drawings shall be provided to the owner prior to final acceptance.
Record drawings shall be maintained throughout construction and reflect
and illustrate job changes as they occur. Record drawings shall:
a. Be submitted to the owner as a set of reproducible drawings. Hand
drafted notation is acceptable, provided it is legible and clear
unless otherwise noted per Architectural specifications.
b. Identify locations of concealed and underground conduit 1” size
and larger scaled within 12” of actual field conditions.
c. Identify the location of vaults and boxes.
C. QUALITY ASSURANCE
1. Manufacturers shall be regularly engaged in the manufacture of electrical
construction products of types required for this project, whose products
have been of satisfactory use in similar service for not less than five years.
2. Installers shall have experience in the installation of products required for
this project. Installers shall be experienced with proper installation
techniques and manufacturer recommendations. In the acceptance or
rejection of the finished installation, no allowance will be made for the lack
of skill on behalf of the personnel.
3. Installers shall be qualified by the State of California and provide
documentation to the owner of the following:
a. Valid Contractors License.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 4
b. Valid Business License.
c. Individuals employed as electricians on the project shall have a valid
journeyman electrician pocket card or California State Division of
Apprenticeship Standards General Journeyman Electrician
Certificate.
4. Electrical work shall be performed in accordance of the latest published
requirements of the following codes and standards:
a. American National Standards Institute (ANSI)
b. American Society for Testing Materials (ASTM)
c. Institute of Electrical and Electronic Engineers (IEEE)
d. National Electrical Contractors Association (NECA)
e. National Electrical Safety Code (NESC)
f. National Electrical Manufacturers Association (NEMA)
g. California Building Code (CBC)
h. National Electrical Code (NEC) with California State Adoptions and
Amendments.
i. National Fire Prevention Association (NFPA).
j. California Code of Regulations, Title 8, Section 290.1 (CAL OSHA).
5. Materials and equipment shall be listed by an independent testing
laboratory for the class of service intended (Underwriters Laboratories or
equivalent).
6. Prior to final acceptance, the electrical system shall be tested and
determined to be free from grounds and short circuits.
D. DELIVERY, STORAGE AND HANDLING
1. Provide for delivery, uploading, transportation and storage of equipment
until installation and final acceptance by the owner.
2. Equipment and materials shall be stored in an environment consistent with
what the equipment is listed for. Pay special attention and mediate
environmental conditions such as, but not limited to: temperature,
moisture, water, dust, dirt, etc. Assume liability of storage facilities and
equipment and materials stored therein.
3. Electrical equipment shall be free of damage upon installation. Equipment
damaged in transport or while in storage on or off the job site will be
rejected and shall be replaced free of charge to the owner.
a. The Engineer and Owner retain the right of continuous access and
inspection of stored materials and equipment.
b. Once installed, equipment shall be protected from, but not limited
to: construction activities, dirt, debris, temperature, moisture, etc.
until project completion and final acceptance by the owner.
1.5 Guarantees
A. Damaged equipment shall be repaired or replaced as necessary at no cost to
the owner prior to final acceptance.
B. Guarantees shall be submitted to the owner, in writing, prior to final
acceptance.
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GECE PROJECT NO. 2437
COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 5
C. The installation, including labor, shall be warranted free of defects for a
minimum of one year from date of owner final acceptance. Any defect
related to the contractor’s work, during the warrantee period, shall be
corrected at the contractor’s expense.
D. Equipment shall be warranted free of defects for a minimum of one year or as
stated in this specification, whichever is a longer duration.
Part 2 – PRODUCTS
1.1 Materials
A. Materials, components, and accessories shall be new unless otherwise noted in
this specification.
B. Manufacturer discontinued product shall not be acceptable. Materials,
equipment, and parts comprising any unit or part thereof, shall be new and
unused unless otherwise noted in this specification. Damaged materials,
equipment, and parts are not considered to be new and will be rejected per
this specification.
Part 3 - Execution
3.1 Installation
A. Work shall be performed by a skilled worker in a manner reflecting best,
modern, construction practices and shall be consistent with acceptable
means and methods of the trade and code requirements.
B. Upon completion, work shall have a neat, orderly, and finished appearance.
Evidence of debris associated with the work shall be removed from the premise
and disposed of legally and appropriately.
C. Clean equipment, both inside and out, upon final installation. If required,
retouch equipment finishes in accordance with manufacturer instructions.
D. Maintain a safe working environment, including but not limited to:
a. Conform to all OSHA workplace requirements.
b. Equipment dead front covers shall be in place while equipment is
energized.
c. Barriers, trench plates, flags, tape, etc. shall be used to keep persons
away from unsafe conditions.
d. Conform with owner imposed safety requirements and site standards.
E. Coordinate raceway systems, equipment, and materials with other trades and
building construction, in order to:
a. Avoid unnecessary project delays and conflicts.
b. Coordinate sequence of work installed with other trades. Every effort shall
be made to avoid unnecessary modification to work that has already
been performed by other trades during the progress of construction to
allow for electrical installations.
F. Install electrical equipment to facilitate future servicing, maintenance, repair,
and replacement (either complete assembly or individual components). As
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COMMON WORK RESULTS FOR ELECTRICAL 26 0500 - 6
much as practical, connect equipment for ease of disconnecting at a later
date, with minimal interference with other installations.
G. Equipment Support and Installation
a. Electrical equipment shall be anchored to foundations, concrete
housekeeping pads, concrete bases where appropriate by bolts and
anchor bolts with studs.
b. After installation and before energizing electrical equipment, torque each
bolted bus and cable connection in accordance to manufacturer
recommendations. Calibrated torque wrenches shall be used.
c. Screw type conductor fasteners and other permanent (i.e. epoxy
conductor adhesive) shall be used in junction boxes, pull boxes, terminal
cabinets, panels, switchboards, switchgear, or other types of enclosures
containing electrical devices and/or conductors. Glue-on type conductor
fasteners shall not be allowed.
d. Support channels shall be installed as required for the support of
raceways, cable trays, devices, enclosures, and other electrical
equipment.
e. Iron and steel supports shall be separated from aluminum with a minimum
¼” neoprene or other non-metallic gasket.
f. When working with galvanized steel product (i.e. channel, conduit,
equipment), paint any field cuts and or scratches with a cold galvanizing
spray paint. Ensure manufacturer requirements are met.
g. Seismic bracing shall be provided as required per the Uniform Building
Code.
h. Electrical equipment and materials shall be securely supported and
mounted independently from building structure to ensure sagging or
swaying. Other trade work (for example, mechanical ducting) shall not be
used as a support means for electrical.
END OF SECTION 26 0500
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
SELECTIVE ELECTRICAL DEMOLITION 26 05 01 - 1
SECTION 26 05 01 – SELECTIVE ELECTRICAL DEMOLITION
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Basic, selective, electrical demolition.
B. Electrical plans identifying the scope of demolition have been prepared
pursuant to limited, visual, field observation and facility as-builts/record
drawings.
C. Principal features of electrical demolition include, but are not limited to,
the following:
a. Demolition of concealed conduit, abandoned in place, with
conductors removed.
1.2 RELATED SECTIONS
A. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
B. Related Sections Under Other Divisions:
1. The General provisions, including supplementary conditions, of this
contract apply to this section.
2. Grading, patching, and repairing of existing surfaces damaged
pursuant to the scope of demolition, including but not limited to:
walls, floors, ceilings, asphalt, concrete, and vegetation, as
required by the Civil Engineer.
1.3 REQUIREMENTS
A. Electrical demolition work shall be performed in accordance of the
latest published requirements of the following codes and standards:
1. National Fire Prevention Association Standard for Electrical Safety
Requirements for Employee Workplaces (NFPA 70E).
2. California Code of Regulations, Title 8, Section 290.1 (CAL OSHA).
PART 2 – PRODUCTS
2.1 MATERIALS
A. Furnish labor, materials, equipment, components, and necessary services
to support the electrical work show on the drawings and specified
herein.
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SELECTIVE ELECTRICAL DEMOLITION 26 05 01 - 2
PART 3 – EXECUTION
3.1 CONDITIONS
A. Visit the site prior to bidding and observe the extent of demolition
necessary pursuant to the contract documents. Should discrepancies be
discovered between field conditions and the construction documents,
notify the Civil Engineer of record prior to bidding for instruction and/or
clarification. Allow for proper contingency when bidding in order to
account for minor variances as stated in Section 26 05 00 COMMON
WORK RESULTS FOR ELECTRICAL.
3.2 PREPARATION
A. Contact the serving utility companies to coordinate service outage(s) as
necessary. Parties affected by scheduled outages shall be notified in
writing a minimum of 72 hours in advance.
B. De-energize electrical distribution equipment, appliances, conductors,
and circuit components prior to removal. Ensure equipment is electrically
safe prior to beginning work by disconnecting equipment from its
energized source and testing for the absence of voltage and grounding
as applicable. Ensure electrical conductors scheduled for removal serve
only abandoned equipment and devices.
C. When work on energized equipment is required, perform work in
accordance with applicable codes and standards. Proper personnel
protective equipment (“PPE”) and Flame Resistant (“FR”) clothing shall be
worn as required corresponding to the NFPA 70E Hazard Risk appropriate
for working conditions. Use barricades and signage to prevent persons on
the job site, not qualified or protected with proper PPE/FR clothing, from
entering an area where work is being performed on energized
equipment.
D. Provide temporary power, wiring, and connections as required to
maintain power to existing loads scheduled to remain operable during
construction. Temporary power to such loads shall be removed upon
installation of permanent power. Coordinate power outages during cut
over with owner 72 hours prior. Temporary power connection(s) may be
subject to additional review and inspection by the authority having
jurisdiction.
E. Flexible power cords may be used for temporary power provided they
meet the following criteria:
1. Are rated not less than the capacity of the device(s) supplied by the
cord.
2. Are free of insulation cracks, splices, damaged conductors, and
damaged plug/receptacle.
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3. Inspected by the user once every 90 days.
4. Protected from damage and do not pose a trip hazard while in use
on the job site.
3.3 DEMOLITION
A. The removal of electrical infrastructure shall be done with care such to
minimize damage of the existing structure or require excessive repair.
B. Field locate, disconnect, and remove existing electrical systems
scheduled for removal. Equipment connections shall be removed to
source of supply.
C. Field locate, intercept, and relocate existing electrical systems to
accommodate new construction. When electrical conduit and
conductors are required to be intercepted and extended, do so with
compatible materials and methods consistent with the existing installation,
unless specified otherwise in the construction documents.
D. Abandoned wiring shall be removed and de-terminated from source of
supply. Wiring that has been removed shall not be re-installed or re-used
onsite.
E. Abandoned conduit shall be removed where exposed and in accessible
locations. It shall be acceptable to abandon conduit in place provided
conductors are removed, conduit ends are cut flush and sealed in a
manner that will prevent moisture penetration. Where conduit has been
cut flush with adjacent surfaces, patch and repair surfaces in a manor
acceptable to the Civil Engineer .
F. The existing electrical installation not scheduled for demolition shall remain
accessible.
3.4 COMPLETION
A. Existing and new materials and equipment installed shall be clean and
free of dirt and debris prior to final owner acceptance.
B. Existing materials and equipment scheduled to remain shall be free of
damage. Make repair where necessary. Ensure electrical connections are
tight, replace damaged or missing device cover plates, etc.
C. Where new branch circuits and feeders are extended from existing load-
centers, panelboards, service, and/or distribution panels update the
circuit breaker directory. The circuit breaker directory shall be typewritten,
identify circuit number and load served, and be installed on the inner
face of the panel cover door in a plastic sleeve.
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SELECTIVE ELECTRICAL DEMOLITION 26 05 01 - 4
D. Install existing materials and equipment in their new location as specified
in the construction documents.
E. Allow the facility owner first right to salvaged equipment removed.
END OF SECTION 26 05 01
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLE 26 05 19 - 1
SECTION 26 05 19 – LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Basic wire and cable for feeder and branch circuit
conductors.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification.
C. Principal features of this section include, but are not limited to the following:
1. Wire and cable
a. Solid and stranded type
2. Connectors, Lugs, and Pads
3. Splice Kits
1.2 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 33 RACEWAYS & BOXES FOR ELECTRICAL SYSTEMS
3. Section 26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEM
4. Related Sections Under Other Divisions:
a. The General provisions, including supplementary conditions, of this
contract apply to this section.
b. Control, Signal, and Communications conductors shall be as
required per the manufacturer of the equipment or as specified by
others.
1.3 REQUIREMENTS
A. Materials and installation shall be in accordance with the latest published
requirements of the following codes and standards:
1. Materials and equipment shall be listed by an independent testing
laboratory for the class of service intended (Underwriters Laboratories or
equivalent).
2. IEEE Standard 510 – 1992, Recommended Practices for Safety in High
Voltage and High Voltage Power Testing.
3. IEEE Standard 400 – 2001, Guide for Field Testing and Evaluation of the
Insulation of Shielded Power Cable Systems.
4. National Electrical Code, NFPA 70.
5. National Fire Protection Code 70B, Recommended Practice for Electrical
Equipment Maintenance.
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LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLE 26 05 19 - 2
6. Federal Specification A-A-59544.
7. UL 83 – Thermoplastic-Insulated Wires and Cables
8. ASTM B1 – Hard-Drawn Copper Wire
9. UL 486 A and UL 486 B – Wire Connections for Copper and Aluminum
10. NECA/AA-104-2012 – National Electrical Contractors Association
Recommendation for Installing Aluminum Building Wire and Cable
PART 2 - PRODUCTS
2.1 MANUFACTURERS
1. Wire, cable, SE Cable: Southwire, Okonite, or engineer of record
approved equal.
2.
3. Connectors, Lugs, and Pads: Thomas & Betts or engineer of record
approved equal.
4. Splice Kits: 3M, Ideal.
2.2 MATERIALS
A. Copper Wire and Cable, Solid and stranded type – Suitable for operation at
600 volts for AC applications and 1,000V for DC applications as specified in the
National Electrical Code. Type XHHW, THHN, or THWN insulation rated for 90
deg. Celsius in wet and dry locations. Stranded or solid for sizes smaller than
and including 8 AWG and stranded for larger than size 8 AWG. Conductors
combined in a single raceway shall be listed for operation at the same voltage
level.
B. Connectors, Lugs, and Pads – Connectors shall be UL listed and suitable for 600
volts in all installations and a minimum of 75 deg. Celsius rated. Strict adherence
to manufacturer installation means and methods is required. Connections shall
be suitable for use with conductors installed (i.e. Copper or Aluminum).
Connectors shall be appropriately sized pursuant to the conductors connected
(i.e. stranded or solid). Exposed wires, clamps, and connectors shall be
completely insulated with vinyl plastic tape. Indenture-compression type
connectors shall be used for stranded conductors. Screw-on compression type
connectors shall be used for size 8 AWG and smaller.
C. Splice Kits
1. Copper Conductors, sizes #10 AWG and smaller where spliced shall use
“spring-lock” connectors.
2. Copper Conductors, sizes #8 and larger where spliced shall utilize an
approved split bolt connector. These types of non-insulated connections
shall be thoroughly protected with applied insulation.
3. Spliced conductors in exterior, damp and wet locations shall be insulated
with an epoxy kit or protected with 3M #2200 or #2210 vinyl mastic
insulating pads.
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LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLE 26 05 19 - 3
PART 3 - EXECUTION
3.1 CONDITIONS
A. Follow manufacturer instructions with respect to installation in low ambient
temperatures. Cables installed in cold weather shall be handled with care and
pulled slower.
B. Conductors shall have the proper listing for the environment installed (i.e. wet
location, plenum ceiling, high/low ambient temperature). Conductors installed
exterior, underground, or below floor slab shall require a wet location listing.
3.2 PREPARATION
A. Inspect cable and reels for damage prior to installation. Ensure cable ends are
sealed to prevent entrance of moisture.
B. Consult cable manufacturer for approval of proper pulling equipment (i.e.
wood reels, steel reels, etc.)
C. Ensure pulling lubricant is approved by the manufacturer and compatible with
the cable. Lubricant that is made of flammable product, wax, and/or grease is
not approved.
3.3 INSTALLATION
A. Conductors shall be installed in a permanent raceway or cable tray. Raceways
shall be as sized to meet minimum code requirements or as noted on the
drawings, whichever provides a larger cross-sectional area. Conduit raceway
shall be installed prior to pulling conductors through.
B. Conductor bend radii shall not exceed manufacturer recommendations during
installation.
C. Do not exceed manufacturer limitations for the amount of pulling tension
applied to the conductors. Avoid pulling different conductor sizes, with different
tension limitations, at the same time. Pull tension calculations shall be
performed prior to pulling conductors to ensure maximum pulling stress allowed
by the manufacturer.
D. Do not exceed manufacturer limitations with respect to maximum side wall
pressure.
E. Strain relief fittings shall be used where the installation exceed manufacturer
maximum stress allowanced for cables under vertical tension. Vertical
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LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLE 26 05 19 - 4
raceways shall be supported at the top (or as close as practical), with interval
supports per NEC Table 300.19 (A).
F. Dedicated neutral conductors shall be provided for each single phase circuit
(i.e. one neutral conductor for each phase conductor) with the exception of
multiwire branch circuits where either a common handle tie, two, or three pole
circuit breaker is used in accordance with NEC 210.4 (B).
G. Conductors shall be as specified on the drawings.
H. Copper Wire and Cable, either solid, compact stranded, or stranded type shall
be color coded pursuant to voltage and phase configuration. Phase A – Black
(208V, 240V), Brown (480V). Phase B – Red (208V), Orange (240V, 480V). Phase
C – Blue (208V, 240V), Yellow (480V). Neutral – White (208V, 240V), Gray (480V).
Ground – Green (208V, 240V, 480V). Isolated Ground – Green w/ colored strip
(208V, 240V, 480V).
I. SPLICES
1. The contractor shall be responsible to assure that all splices are
completed in a secure and permanent fashion, maintaining the integrity
of the connection without faults or shorts. Where applicable, and required
per installed conditions, the contractor shall take extra care to tape wrap
spliced conductors.
2. Splices shall be minimized. Splices below grade shall be avoided, if
required, the Engineer of Record will approve prior to installation. Feeder
splices below grade shall be made be fully watertight and made with
conductors encapsulated in epoxy.
J. CONNECTORS
1. Electrical connections shall be inspected periodically in accordance to
NFPA 70B.
2. Where set screw connectors are used, ensure screws are tightened via a
torque wrench or torque screw driver. Connectors shall be tightened to
the value as required by the connector manufacturer.
3. Where compression connectors are utilized, ensure the crimping tool
utilizes is as per manufacturer recommendations.
K. The use of pulling compounds is allowed. Pulling compounds shall be applied
before and/or during the pull.
L. Cable shall be installed in a neat and workmanlike manor.
M. Conductors in switchgear, , pull boxes, etc. shall be labeled indicated branch
circuit designation and source of supply.
N. Conductors shall be installed in an approved raceway. Each raceway shall also
contain a grounding conductor size per NEC table 250.122.
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3.4 TESTING
A. Insulation Resistance (IR) testing shall be conducted for branch circuit
conductors rated 400 amps and higher in accordance with IEEE Standards .
Testing shall be done with a dc potential of 500 to 1,000 volts dc. Avoid testing
conditions such as humidity, moisture in conductors, and excess pulling
lubricants.
B. The conductors shall be de-energized prior to resting. Remove grounds from the
cable phase that will be tested only.
C. Test results shall be recorded and provided to the owner. Testing records shall
include testing instrument used, feeder specifications, conductor insulation
type, voltage applied, conduit specification, length of conductor, and
megohm meter reading.
END OF SECTION 26 05 19
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
GROUNDING AND BONDING OF ELECTRICAL SYSTEMS 26 05 26 - 1
SECTION 26 05 26 – GROUNDING AND BONDING OF ELECTRICAL SYSTEMS
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Basic grounding and bonding of electrical systems.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification for a complete grounded and bonded system.
1.2 DEFINITIONS
A. Definitions shall be consistent with Article 100 of the National Electrical Code,
with California State Amendments.
1. “Bonding Jumper” – A reliable conductor to ensure the required electrical
conductivity between metal parts required to be electrically connected.
2. “Bonding Jumper, Equipment” – The connection between two or more
portions of the equipment grounding conductor.
3. “Bonding Jumper, Main” – The connection between the grounded circuit
conductor and the equipment grounding conductor at the service.
4. “Ground” – The earth.
5. “Grounded” (grounding) – Connected (connecting) to ground or to a
conductive body that extends the grounded connection.
6. “Grounded, Solidly” – Connected to ground without inserting any resistive
or impedance device.
7. “Grounded Conductor” – A system or circuit conductor that is
intentionally grounded.
1.3 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 19 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND
CABLES
3. Section 26 05 46.13 UNDERGROUND ELECTRICAL CONSTRUCTION AND
SERVICE
A. Related Sections Under Other Divisions:
1. The General provisions, including supplementary conditions, of this
contract apply to this section.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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GROUNDING AND BONDING OF ELECTRICAL SYSTEMS 26 05 26 - 2
1.4 REQUIREMENTS
A. Grounding and bonding of the electrical system shall be performed in
accordance to the latest published requirements of the following codes and
standards. Note, grounding and bonding of electrical systems shall be specific
to electrical equipment and conductive material, establishing an effective
ground-fault current path and personal safety.
1. National Electrical Code (NEC), with California State Amendments, Article
250 – Grounding
2. IEEE Standard 81 – Guide for Measuring Earth Resistivity, Ground
Impedance, and Earth Surface Potentials for a Grounded System
3. IEEE Standard 142 – Recommended Practice for Grounding of Industrial
and Commercial Power Systems
4. ASTM B1 – Hard-Drawn Copper Wire
5. ASTM B8 – Concentric-Lay-Stranded Copper Conductors, Hard, Medium-
Hard, or Soft.
6. UL 83 – Thermoplastic-Insulated Wires and Cables
7. UL 467 – Grounding and Bonding Equipment
1.5 GUARANTEES
A. Materials and equipment shall be listed by an independent testing laboratory
for the class of service intended (Underwriters Laboratories or equivalent).
PART 2 - MATERIALS
2.1 MATERIALS
A. Grounding Conductor – Insulated green stranded (No. 8 AWG and larger) and
solid (No. 10 AWG and smaller) copper. Insulated green with yellow stripe is
acceptable pursuant to NEC.
B. Bonding Conductors – Shall be bare stranded copper, with the exception of
solid bare copper for No. 10 AWG and smaller sizes as required per NEC.
C. Connectors, Clamps, Splices, Termination Components, & Mechanical Lugs -
Industry standard type for connection grounds, bonding, splicing, tapping and
similar. Shall be appropriate for the conductor size as permitted by the
manufacturer.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
GROUNDING AND BONDING OF ELECTRICAL SYSTEMS 26 05 26 - 3
PART 3 - EXECUTION
3.1 GENERAL CONDITIONS
A. Grounding shall be performed in accordance to the National Electric Code
Article 250 requirements.
B. Install grounding conductors prior to construction of concrete slabs, structural
equipment pads, and general equipment housekeeping pads.
C. Grounding conductors shall be sized per the drawings. When a ground
conductor size is not identified, the size shall be installed to meet minimum NEC
requirements. Refer to NEC Table 250.66 for grounding electrode conductors
and NEC Table 250.122 for equipment grounding conductors for grounding
raceway and equipment.
D. Equipment grounding conductors, grounding electrode conductors, and
bonding jumpers shall be connected by one or more of the following means as
outlined in CEC 250.8: Listed pressure connectors, terminal bars, exothermic
welding process, machine screw type fasteners, thread –forming machine
screws, and connections part of a listed assembly. Connections made solely of
solder shall not be permitted.
E. Where ground clamps and fittings are subject to physical damage, maintain
protective covering by means of metal, wood, or equivalent. Coordinate in
field.
F. Contact surfaces shall be thoroughly cleaned of nonconductive coatings (i.e.
paint, lacquer, and enamel) before connections are made to insure good
metal contact.
G. Grounding conductors shall be installed in every raceway, both metallic and
non-metallic, unless specifically identified on the drawings or permitted per this
specification.
H. Inaccessible Grounding Connections: Ground connections that are/will be
inaccessible upon completion of construction shall be made via exothermic
welds or clamp suitable for direct bury.
I. Ground Connections Requiring Periodic Testing, Not Subject to Physical
Damage: Where periodic testing is required for ground connections, the
grounding electrode, where the ground conductor connection is made, shall
be exposed and stubbed up above grade (approx.. 3-4”), in an area not
subject to physical damage.
J. Ground Connections Requiring Periodic Testing, Subject to Physical Damage:
Where periodic testing is required for ground connections, the grounding
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
GROUNDING AND BONDING OF ELECTRICAL SYSTEMS 26 05 26 - 4
electrode, where the ground conductor connection is made, shall be exposed
(approx.. 3-4”), integral to a flush in grade pull box.
K. Obtain inspector of record acceptance as required and prior to below grade
and/or inaccessible connections are completed and concealed.
3.2 INSTALLATION
A. Install bonding jumpers between sections of loosely jointed metallic raceways
(i.e. expansion fittings and telescoping raceways) to ensure electrical
continuity.
B. Where circuit conductors are spliced within a pull box, junction box, or
terminated on equipment within or supported by a pull box, junction box, or
like, the associated equipment grounding conductor shall be terminated at the
box via listed grounding means in accordance to NEC Article 250.
C. Metal raceways, cable trays, enclosures, frames, fittings, and other metal non-
current-carrying parts that are to serve as grounding conductors shall be
bonded where necessary to ensure electrical continuity per NEC Article 250.96.
D. Ground non-current-carrying metallic parts of fixed, portable, and mobile
equipment and associated fences, housings, enclosures, floors, and supporting
structures.
E. Bond all conductive components of the conduit system to the grounding
electrode system. Bonding connections shall be made as close as practical to
the equipment ground bus.
F. Grounding Electrodes: Grounding electrodes present at each building or
structure shall be bonded together to the grounding electrode system, with
exceptions as defined per the NEC. Grounding or bonding conductors shall be
connected to the grounding electrode by exothermic welding, listed lugs, listed
pressure connectors, listed clamps, or other listed means. Electrodes permitted
per NEC Article 250, part III for grounding include:
1. Metal underground water pipe in direct contact with the earth for 10 feet
and electrically continuous.
2. Metal building frame or structure.
3. Concrete-encased electrodes.
4. Ground Rings.
5. Rod and Pipe Electrodes.
6. Listed Electrodes.
7. Plate Electrodes.
8. Other Local Metal Underground Systems or Structures.
G. Secondary Equipment:
1. Switchgear– Ground conductors of feeders and branch circuits shall
terminate at the equipment ground bar or bus. Provide ground bushings
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
GROUNDING AND BONDING OF ELECTRICAL SYSTEMS 26 05 26 - 5
for metallic conduits connecting to the physical enclosure. Isolated
ground conductors shall terminate at a dedicated/isolated ground bar or
bus where indicated on the drawings.
2. Metallic structures, enclosures, piping, ductwork, raceways, pull boxes,
junction boxes, outlet boxes, etc. associated with or in close proximity to
shall be bonded and grounded as part of the electrical system.
3. Electric Vehicle Chargers fastened in place or connected by permanent,
fixed, wiring methods shall be provided with a ground lug for connection
of the branch circuit/feeder equipment grounding conductor.
END OF SECTION 26 05 26
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33 - 1
SECTION 26 05 33 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Raceways and boxes for electrical systems.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification.
1. Principal features of this installation include:
a. Conduit and associated fittings
b. Conduit bodies
c. Concrete pull boxes and vaults
d. Fiberglass/composite pull boxes and vaults
1.2 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 46.13 UNDERGROUND ELECTRICAL CONSTRUCION AND
SERVICE
3. Section 26 05 53 IDENTIFICATION OF ELECTRICAL SYSTEMS
4. Section 26 05 19 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND
CABLES
5. Related Sections Under Other Divisions:
a. The General provisions, including supplementary conditions, of this
contract apply to this section.
b. Painting of exposed raceways and/or boxes as required by the
owner.
c. Grading, patching, and repairing of existing surfaces, including but
not limited to: asphalt, concrete, and vegetation, as required by the
Civil Engineer.
1.3 REQUIREMENTS
A. Materials and installation shall be in accordance with the latest published
requirements of the following codes and standards:
1. Materials and equipment shall be listed by an independent testing
laboratory for the class of service intended (Underwriters Laboratories or
equivalent).
2. National Electrical Code (NEC) with California State and local
amendments.
3. UL 1 – Flexible Metal Conduit
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33 - 2
4. UL 5A – Nonmetallic Surface Raceway and Fittings
5. UL 6 – Electrical Rigid Metal Conduit - Steel
6. UL 6A – Electrical Rigid Metal Conduit – Aluminum, Stainless Steel
7. UL 50 – Enclosures for Electrical Equipment, Non-Environmental
Considerations.
8. UL 360 – Liquid Tight Flexible Steel Conduit
9. UL 514A – Metallic Outlet Boxes
10. UL 514B – Conduit, Tubing, and Cable Fittings
11. UL 514C – Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
12. UL 651 – Schedule 40, 80, Type EB, and A Rigid PVC Conduit and Fittings
13. UL 651A – Schedule 40 and 80 High Density Polyethylene (HDPE) Conduit
14. UL 797 – Electrical Metallic Tubing – Steel
15. UL 797A – Electrical Metallic Tubing - Aluminum
16. UL 886 – Outlet Boxes and Fittings for Use in Hazardous (Classified)
Locations
17. UL 1660 – Liquid-Tight Flexible Non-metallic Conduit
18. UL 1653 – Electrical Non-Metallic Tubing
19. UL 2225 – Standard for Cables and Cable-Fittings for Use in Hazardous
(Classified) Locations
20. American National Standards Institute (ANSI) OS1 and OS2
21. National Electrical Manufacturers Association (NEMA) FB1 and 250
PART 2 - PRODUCTS
2.1 MATERIALS
A. Raceways
1. Raceway product shall be rated for use with 90 degree Celsius power
wiring conductors.
2. Rigid Non-Metallic Conduit
a. Schedule 40, wall thickness of 0.113 inches, Polyvinyl Chloride (PVC)
construction, Bell end feature, manufactured in accordance with
NEMA standard TC-2 (conduit) and TC-3 (fittings).
b. Schedule 80, wall thickness of 0.154 inches, Polyvinyl Chloride (PVC)
construction, Bell end feature, manufactured in accordance with
NEMA standard TC-2 (conduit) and TC-3 (fittings).
3. Galvanized Rigid Steel (GRS) Conduit – Hot-dip galvanized, zinc coated
rigid steel conduit, manufactured in accordance with ANSI C80.1.
4. Conduit Supports – Unistrut, Caddy or engineer approved equal. Conduit
supports shall consist of; clamps, straps, brackets, clips, j-hooks trapeze
hangers, “C” channel strut etc.
5. Conduit Fittings – Thomas & Betts, O-Z Gedney, or engineer approved
equal. Fittings shall be appropriate for use with the conduit system
installed. Fittings shall consist of connectors, rigid and flexible, adaptors,
bushings, liquid tight (as required), locknuts, etc.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33 - 3
B. Boxes
1. Manufacturers
a. Vaults (non-utility company use), Handhole enclosures – Christy,
Oldcastle Enclosure Solutions, Brooks Products, or engineer approved
equal.
PART 3 - EXECUTION
3.1 General
A. Raceway systems shall be installed in accordance to uses permitted per code.
B. Trenching and backfilling for underground raceway systems is the responsibility
of the contractor. Refer to trench requirements detailed on the drawings and
Section 26 05 46.13 UNDERGROUND ELECTRICAL CONSTRUCION AND SERVICE
requirements. The contractor is required to implement traffic control and
provide barriers as required to protect excavated areas.
3.2 CONDUIT SYSTEM
A. Minimum conduit size shall be ½”, with the following exceptions:
1. When a larger size is required to meet Code.
2. Underground and/or under slab conduit shall be a minimum ¾”.
B. Systems (i.e. power, control, communications, etc.) shall be installed in
dedicated raceways. Systems shall not be combined within a raceway unless
specifically identified in the construction documents.
C. Install conduit runs in accordance to the schematic representation as indicated
on the drawings and as specified. Modify conduit runs to suite field conditions
as accepted by the engineer of record.
D. Install conduit runs for branch circuits and or feeders where only circuit numbers
are identified on the plans, without schematic conduit routing shown.
E. Install conduit runs in straight lines, with uniform and symmetric elbows, offsets,
and bends. Conduit shall not be run diagonally.
F. Be conscious of the elevation by which underground conduits are installed. The
open conduit end at the building and/or where it transitions into distribution
equipment shall be at a higher elevation such to prevent the infiltration of
water through the conduit raceway.
G. Conduit shall be installed such that it does not interfere or block equipment,.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33 - 4
H. Conduit shall be securely fastened by means of clamps and/or straps as
required per the NEC. Type 316 stainless steel straps and/or clamps shall be
used with exposed PVC-coated rigid steel conduit. Provide appropriate
conduit hangars, supports, fasteners, and seismic restraints.
I. Conduit bends shall be made such that the conduit will not be damaged and
the internal diameter of the conduit will not be effectively reduced. Form or
field bend conduit with appropriate tools. Conduit shall be routed such that it
does not exceed a cumulative angular sum of 360 degrees in bends between
junction boxes, pull boxes, conduit bodies, handholes, and vaults
J. When re-using existing raceway(s) and/or installing new raceways, verify
raceway(s) are free of internal debris and are not crushed or creased prior to
installing conductors or cables. The use of a mandrel may be required. The
contractor shall replace conduit sections that are determined to be damaged
and/or obstructed.
K. Spare and empty conduits shall be properly plugged with the appropriate cap
and/or insert. The use of tape, “duct” tape or like, will not be acceptable.
Spare conduit identified on the drawings shall be retained as spare and shall
not be used during construction unless prior authorization is given from the
engineer of record.
L. Special attention shall be paid to atmospheric conditions (i.e. Corrosion,
sunlight, chemicals, abrasion, moisture) and occupancies pursuant to the NEC.
Raceway systems shall be suitable for the environment in which they are
installed.
M. Use of dissimilar metals shall not be allowed. Boxes, fittings, enclosures, and
conduit supports shall be of the same metal, with or without coatings, as the
conduit type.
N. Galvanized Rigid Steel (GRS) risers shall be used where conduit runs are installed
equal or in excess of 150 LF. GRS elbows shall be used where the top of the
elbow is installed less than 18 in. below finished grade, with conduit rising up
from below grade to terminate at an equipment enclosure, disconnect switch,
device, machinery, etc. above grade. GRS risers and elbows shall either be
PVC coated, as identified in this specification, or tape wrapped to a minimum
of 3” above finished grade or the top of the equipment pad or slab, whichever
is applicable to the installation condition.
3.3 RACEWAYS
A. Rigid Non-Metallic Conduit – Rigid Polyvinyl Chloride (PVC) schedule 40 and/or
80. Utilize below grade, in/under slab or foundation, not where subject to
physical damage or at operating temperatures outside of product listing. Cut
ends shall be trimmed inside and outside to remove rough edges.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33 - 5
B. Galvanized Rigid Steel (GRS) Conduit - Utilize where exposed between +18”
below grade and +8’ above finished grade where exposed to physical
damage. Cut ends shall be reamed or otherwise finished to remove rough
edges. Tape wrap where located below grade.
3.4 Conduit Supports – Provide a conduit supports system consisting of; clamps,
straps, brackets, clips, j-hooks trapeze hangers, “C” channel strut etc. Ensure
support is provided with isolation material or cushion as required for shock
absorption, sound and vibration isolation, protection from corrosion and
abrasion, and allowance for expansion and contraction. Conduit supports shall
be selected for use given the conduit size and weight. Follow manufacturer
recommendations for pipe spacing when supported, bolt torque. Conduit
supports are subject to the approval of the AHJ. Corrections required to obtain
approval shall be the sole responsibility of the contractor.
3.5 Conduit Fittings – Fittings shall be appropriate for use with the conduit system
installed. Fittings shall consist of connectors, rigid and flexible, adaptors,
bushings, liquid tight (as required), locknuts, etc. Connection devices and or
fittings that depend solely on solder shall not be used for grounding and
bonding. Protect fittings from physical damage. Fittings shall be tight using
suitable tools. Fittings shall be insulated when used with raceways that contain 4
AWG or larger conductors per NEC 300.4.
3.6 BOXES
A. Junction boxes, pull boxes, and conduit bodies shall be sized a minimum per
NEC Article 314. Adhere to volume and fill calculations as identified in the code.
B. Metallic boxes shall be bonded and grounded in accordance to NEC Article
250.
C. Listed weatherproof boxes, conduit bodies, and fittings are required for use in
damp and wet locations.
D. Terminal blocks shall be installed in junction/terminal boxes as required.
E. Junction and pull boxes shall be installed such that access is not restricted by
obstructions such as, but not limited to: piping, ladders, and equipment.
END OF SECTION 26 05 33
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
UNDERGROUND ELECTRICAL CONSTRUCTION AND SERVICE 26 05 46.13 - 1
SECTION 26 05 46.13 – UNDERGROUND ELECTRICAL CONSTRUCTION AND SERVICE
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Complete underground electrical raceway system.
B. Furnish labor, materials, equipment, components, and necessary services to
support design requirements as show on the drawings and specified herein in
this specification.
1. Principal features of acceptance include:
a. Trenching
b. Pull boxes
c. Conduit
d. Ducts
1.2 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 19 LOW VOLTAGE ELECTRICAL POWER CONDUCTORS AND
CABLES.
3. Section 26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
4. Section 26 05 33 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS
5. Section 26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEMS
A. Related Sections Under Other Divisions:
1. The General provisions, including supplementary conditions, of this
contract apply to this section.
2. Grading, patching/repair of existing surfaces (asphalt, concrete,
vegetation, etc.).
3. Concrete work including but not limited to: equipment pads, luminaire
bases, as required by the Civil .
1.3 QUALITY ASSURANCE
A. Electrical work shall be performed in accordance of the latest published
requirements of the following codes and standards:
1. National Electrical Code (NEC) with California State Adoptions and
Amendments.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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UNDERGROUND ELECTRICAL CONSTRUCTION AND SERVICE 26 05 46.13 - 2
PART 2 - EXECUTION
2.1 CONDUIT
A. Conduit installed underground shall maintain minimum cover requirements as
defined in the NEC / CEC Table 300.5, “Minimum Cover Requirements, 0 to
600Volts, Nominal”. Consistent with the NEC / CEC cover shall be defined as the
shortest distance measured between a point on the top surface of any
raceway and the top surface of finished grade, concrete, asphalt, or other
surface. Lower cover shall only be allowed where specified with concrete
encasement.
B. Where subject to physical damage conduit shall be rigid metal conduit or
schedule 80 PVC.
2.2 TRENCHING
A. Backfill material shall not contain large rocks, paving material, cinders, large
sharp angular materials / substances, or corrosive materials and like.
B. Actual trench depth shall be adequate to maintain required cover as
indicated per NEC / CEC Table 300.5, “Minimum Cover Requirements, 0 to
600Volts, Nominal”.
C. Electric and / or communication conduit systems shall not share a common
trench with wet utility systems (i.e. water, sewer, sanitary drains, propane, storm
drain, or the like). Adequate separation clearance shall be maintained
between wet and dry conduit systems defined by the civil engineer. Warning
ribbon or tape shall be installed in conduit trenches as identified on the
drawings.
D. Warning ribbon or tape shall be installed in trenches at not more than 12”
above the underground installation.
E. Conform to inspection requirements set forth by the AHJ. If applicable, ensure
trenches are inspected prior to backfill.
F. Coordinate trench routing with actual field conditions. Every effort shall be
made to reduce / eliminate the need for sharp turns / bends.
2.3 PULL BOXES
A. Pull boxes shall be adequately protected / suitable for the environment in
which they are installed. For example, traffic rated covers / acceptable
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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UNDERGROUND ELECTRICAL CONSTRUCTION AND SERVICE 26 05 46.13 - 3
installation practice as defined per the manufacturer shall be utilized where pull
boxes are installed in a location subject to vehicular traffic (non-incidental).
B. Excavate approximately 6” deeper than the overall height and 4-6” wider (all
four sides) that the pull box enclosure. Pull boxes shall be installed on a 3-6” bed
of compacted material (i.e. sand or gravel is acceptable). The compacted
material shall be level such that the pull box is installed flush with the adjacent
finished grade.
C. In the event a pull box is installed in concrete / pavement where subject to
occasional, non-deliberate vehicular traffic, an 8” wide section of concrete
shall be installed on all four sides of the pull box, extending from grade to 8”
below grade.
END OF SECTION 26 05 46.13
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
IDENTIFICATION OF ELECTRICAL SYSTEMS 26 05 53 - 1
SECTION 26 05 53 – IDENTIFICATION OF ELECTRICAL SYSTEMS
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Identification of electrical systems.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification.
1. Principal features of this installation include identification of electrical
systems by means of:
a. Warning ribbon
b. Device Labels and tags
1.2 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 33 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS
3. Section 26 28 16 ENCLOSED SWITCHES AND CIRCUIT BREAKERSR
A. Related Sections Under Other Divisions:
1. The General provisions, including supplementary conditions, of this
contract apply to this section.
1.3 REQUIREMENTS
A. Identification of electrical systems shall be performed and installed in
accordance to the latest publication of the following codes and standards:
1. National Electrical Code (NEC) with California State Amendments.
2. ANSI Z535.4 Guidelines – Product Safety Signs and Labels
3. National Fire Prevention Association Standard for Electrical Safety
Requirements for Employee Workplaces (NFPA 70E).
1.4 PERFORMANCE
A. Labels shall be suitable for the environment where they are installed with
consideration given to exposure to chemicals, sunlight, and abrasion.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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IDENTIFICATION OF ELECTRICAL SYSTEMS 26 05 53 - 2
PART 2 - PRODUCTS
2.1 MATERIALS
A. Nameplates
1. Normal Power: Black lamicoid with white letters fastened with round head,
stainless steel screws.
B. Warning Ribbon – Min. 6” wide made of polyethylene film or detectable
laminated aluminum designed for direct burial. Warning ribbon shall not be
made of materials that will biodegrade.
PART 3 - EXECUTION
3.1 INSTALATION
A. Warning Ribbon
1. Warning ribbon or tape shall be installed in conduit trenches as identified
on the drawings. Pursuant to the NEC, warning tape shall be required for
conductors that are not concrete encased and buried 18” below grade
or more.
2. Warning ribbon or tape shall be installed in trenches at not more than 12”
above the underground installation.
B. Name Plates
1. Nameplates shall be provided for electrical equipment enclosures such
as, but not limited to: electric vehicle chargers.
2. Nameplates shall be provided for separately enclosed devices such as,
but not limited to: circuit breakers.
3. The following, minimum, information shall be included on equipment and
enclosed device identification:
a. Voltage Rating
b. Source
c. Load Served
d. Circuit/Feeder designation
C. Device Labels
1. Junction boxes shall be labeled with the branch circuit and/or feeder
conductors passing through the box. Hand-written labeling via permanent
marker is acceptable provided it is in a visible location and is legible.
D. Raceway Identification (Tags)
1. Identify conductors at each termination. Tag conductors with sleeve type
labels.
2. The following, minimum, information shall be included on wire and cable
identification:
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
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IDENTIFICATION OF ELECTRICAL SYSTEMS 26 05 53 - 3
a. Circuit number or load identification tag number,
b. Origin from source.
c. Destination to load.
E. Grounding Conductors larger than 6 AWG
1. Grounding conductors larger than 6AWG shall have the insulation or
covering marked with green tape or green adhesive labels at the
termination pursuant to NEC 250.119.
END OF SECTION 26 05 53
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
ENCLOSED SWITCHES AND CIRCUIT BREAKERS 26 28 16 - 1
SECTION 26 28 16 – ENCLOSED SWITCHES AND CIRCUIT BREAKERS
PART 1 - GENERAL
1.1 SUMMARY
A. This section includes: Enclosed switches and circuit breakers.
B. Furnish labor, materials, equipment, components, and necessary services to
support the electrical work show on the drawings and specified herein in this
specification.
1. Principal features of this installation include:
a. Molded case circuit breakers
b. Low voltage power circuit breakers
1.2 RELATED SECTIONS
1. Section 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL
2. Section 26 05 53 IDENTIFICATION OF ELECTRICAL SYSTEMS
A. Related Sections Under Other Divisions:
1. The General provisions, including supplementary conditions, of this
contract apply to this section.
1.3 REQUIREMENTS
A. Materials and installation shall be in accordance with the latest published
requirements of the following codes and standards:
1. Materials and equipment shall be listed by an independent testing
laboratory for the class of service intended (Underwriters Laboratories or
equivalent).
2. National Electrical Code (NEC) with California State and local
amendments.
3. ASTM E 329 - Standard Specification for Agencies Engaged in the Testing
and/or Inspection of Materials Used in Construction.
4. Federal Specification FS W-C-375 - Circuit Breakers, Molded Case, Branch
Circuit and Service.
5. NEMA KS 1 - Enclosed Switches
6. NEMA 250 - Enclosures for Electrical Equipment
7. UL 489 - Standard for Molded-Case Circuit Breakers and Circuit-Breaker
Enclosures.
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
ENCLOSED SWITCHES AND CIRCUIT BREAKERS 26 28 16 - 2
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Square D, Eaton-Cutler Hammer, Siemens or engineer approved equal.
2.2 MOLDED CASE CIRCUIT BREAKERS
A. Where circuit breakers are installed in existing distribution switchgear they shall
match existing devices or be compatible with the distribution equipment.
Adhere to manufacturer requirements.
B. Circuit breakers shall be constructed using glass reinforced insulating material.
Current carrying components shall be completely isolated from the handle,
and the accessory mounting area.
C. Circuit breakers shall have an over center, trip free, toggle operating
mechanism which shall provide quick-make, quick-break contact action. The
circuit breaker shall have common tripping of all poles.
D. The circuit breaker handle shall reside in a tripped position between on and off
to provide local trip indication. Circuit breaker escutcheon shall be clearly
marked on and off in addition to providing international I/O markings.
E. The maximum ampere rating and UL, or other certification standards with
applicable voltage systems and corresponding interrupting ratings shall be
clearly marked on face of circuit breaker.
F. Each circuit breaker shall be equipped with a push-to-trip button, located on
the face of the circuit breaker to mechanically operate the circuit breaker
tripping mechanism for maintenance and testing purposes.
G. Circuit breakers shall be factory-sealed with a hologram quality mark and shall
have date code on face of circuit breaker.
H. Series rated combinations shall not be allowed.
I. Lugs shall be suitable for 167 °F (75 °C) rated wire and/or 194 °F (90 °C) rated
wire, sized according to the 167 °F (75 °C) temperature rating in the NEC. Refer
to the copper feeder schedule on the drawings.
J. Circuit breakers shall be capable of accepting bus connections.
K. Circuit breakers with ratings up to 400 amperes shall be equipped with thermal
magnetic trip units. Thermal trip elements shall be factory preset and sealed.
Circuit breakers shall be true RMS sensing and thermally responsive to protect
circuit conductor(s) in a 104 °F (40 °C) ambient temperature. Circuit breaker
BATTERY ELECTRIC BUS CHARGING INFRASTRUCTURE
GECE PROJECT NO. 2437
ENCLOSED SWITCHES AND CIRCUIT BREAKERS 26 28 16 - 3
frame sizes above 150 amperes shall have a single magnetic trip adjustment
located on the front of the circuit breaker
L. Circuit breakers with permanent trip units shall be UL-listed for reverse
connection without restrictive line and load markings and be suitable for
mounting in any position.
M. The trip units shall not augment overall circuit breaker volume.
PART 3 - EXECUTION
3.1 INSTALLATION
A. Preparation and installation shall be in accordance with reviewed product
data, final shop drawings, manufacturer’s written recommendations, and as
indicated on the Drawings.
3.2 ADJUSTING
A. Mold case circuit breaker pickup level and time delay settings shall be adjusted
to values indicated on the Drawings or schedule and as instructed by the
Engineer.
END OF SECTION 26 28 16