Common use of Conduit and Wiring Clause in Contracts

Conduit and Wiring. (a) All conductors shall be in conduit. Contractor shall not direct bury conductors unless explicitly approved by Agency in writing. All conduits shall be installed according to the requirement of the NEC and all Governmental Authorities. (b) Buried conduit shall be PVC encased in concrete and shall be covered per NEC requirements. (c) All below grade horizontal and vertical bends of PVC conduit shall use long radius elbows. Bending of straight PVC conduit tighter than that of long radius elbows will not be allowed. (d) Exposed vertical risers of buried and encased PVC conduit shall transition while below grade to Galvanized Rigid Conduit (GRC) wrapped in 10mil tape in non-corrosive environments, and to PVC coated GRC in corrosive environments. . (e) Where exiting from the ground, all conduits shall enter enclosures from below and be made watertight. Finish with a silicone sealing compound. (f) All above ground conduit shall be GRC in a non-corrosive environment. All above ground conduit shall be PVC coated GRC in a corrosive environment. (g) All conduits located on rooftops will be supported using UV resistant polyethylene foam or synthetic rubber unless explicitly approved by Agency in writing. Wood supports are not permitted. (h) All conductors 8 AWG or smaller shall be copper. Code compliant aluminum conductors may be used for conductors larger than 8 AWG. All wiring that interfaces with any of Agency’s equipment must be copper. (i) All wiring used for grounding shall be copper. (j) Ground lugs shall be mechanical or irreversible crimp, rated for direct burial, listed to UL 467 and/or UL 2703 and suitable for use with copper conductors. (k) All wiring shall be minimally rated to handle the voltage and current of the designed system. (l) All wiring shall be listed and labeled by a Nationally Recognized Testing Laboratory (“NRTL”) in accordance with Underwriters Laboratories standards for its purpose and location. (m) All termination equipment shall be rated for the conductor type, temperature, current and voltage of the conductor being terminated. (n) All conductors used for communication will be shielded cable with a drain. (o) Communications wiring shall be in separate conduits from the high voltage DC and AC wiring with sufficient separation to prevent interference. (p) Worst-case AC voltage drop for an individual inverter shall be limited to 2.0% for the ▇▇▇▇ at maximum power unless otherwise explicitly approved by Agency in writing. The circuit shall be defined as all wiring from the inverter output to the Delivery Point. Contractor shall account for all horizontal and vertical distances and all wire gauge transitions.

Conduit and Wiring. (a) All conductors Locations of all pull boxes shall be in conduit. Contractor shall not direct bury conductors unless explicitly approved by reviewed with Agency in writing. All conduits shall be installed according prior to the requirement start of the NEC and all Governmental Authoritiesconstruction. (b) Buried conduit No wire splicing shall be PVC encased in concrete and shall be covered per NEC requirementsallowed. (c) All below grade horizontal exposed wire shall be secured every three and vertical bends of PVC conduit shall use long radius elbows. Bending of straight PVC conduit tighter than that of long radius elbows will not be alloweda half feet (3.5’) minimum. (d) Exposed vertical risers of buried When terminating aluminum conductors, all terminations shall be brushed and encased PVC conduit shall transition while below grade to Galvanized Rigid Conduit (GRC) wrapped in 10mil tape in non-corrosive environments, and to PVC coated GRC in corrosive environments. with an oxide inhibitor. (e) Where exiting from Underground cabling shall have electrical warning tape installed approximately twelve (12”) inches below finished grade in the ground, all conduits shall enter enclosures from below and be made watertight. Finish with a silicone sealing compoundbackfill. (f) All above ground conduit Contractor shall use GPRS and potholing to survey for underground utilities and use best practices when boring or trenching, including hand digging near buried lines. Trenching or boring in potentially high-risk areas (gas lines) shall be GRC in a non-corrosive environment. All above ground conduit shall be PVC coated GRC in a corrosive environmentcoordinated with Agency. (g) All conduits located on rooftops will Contractor shall carefully preserve all benchmarks, monuments, survey markers, and stakes and shall be supported using UV resistant polyethylene foam or synthetic rubber unless explicitly approved by Agency in writing. Wood supports are not permittedsolely responsible for resetting if required. (h) All conductors 8 AWG or smaller Contractor shall ensure parasitic loads (lights, security cameras, etc.) are not installed on the same circuit as the Solar Production Meter and/or ▇▇▇▇ Meter and are installed so that their load shall be copper. Code compliant aluminum conductors may be used for conductors larger than 8 AWG. All wiring that interfaces included with any of Agencythe overall site’s equipment must be copperFacility Load Meter measurement. (i) All wiring used for grounding Contractor shall be copperconfirm that the System is interconnected to the correct Distribution Utility meter at the Project Site by validating the meter and service account identification numbers (SAID) with the Distribution Utility. (j) Ground lugs All exposed wiring shall be mechanical or irreversible crimp, properly rated for direct burial, listed to UL 467 and/or UL 2703 and suitable for use with copper conductorssun exposure. (k) All wiring Conduit entry locations shall be minimally rated to handle the voltage and current of the designed systemmade in manufacturer provided/specified locations only. (l) All wiring ground conductors shall be listed and labeled by a Nationally Recognized Testing Laboratory (“NRTL”) protected from physical damage as specified in accordance with Underwriters Laboratories standards for its purpose and locationthe NEC. (m) All termination equipment shall Grounding wire connections must be rated for the conductor typemade at closest point possible between concrete and steel, temperaturesharp edges removed, current and voltage of the conductor being terminatedpainted to match. (n) All conductors used for communication will Power and data lines shall be shielded cable located in separate conduits with a drainappropriate separation to avoid interference. (o) Communications wiring shall All junction boxes, condolets, etc., are to be in separate conduits from the high voltage DC sealed with a silicone sealing compound and AC wiring with sufficient separation to prevent interferencemade watertight. (p) Worst-case AC voltage drop for an individual inverter H-20 rated concrete handholes with cast iron or galvanized steel lids shall be limited to 2.0% used for the ▇▇▇▇ at maximum power all underground junction box locations unless otherwise explicitly approved by Agency in writingapproves an alternative approach. The circuit Lids shall be defined bolted or welded in place with an appropriate permanent marking such as all wiring from “ELEC” or “COMM” on the inverter output to lid depending on the Delivery Point. Contractor contents of the junction box. (q) Aboveground junction boxes shall account for all horizontal and vertical distances and all wire gauge transitionsnot be placed in areas where water ponding is anticipated.