Is there a NEC requirement that an equipment grounding conductor be installed in PVC conduits?
A3. Kinda. 352.60 states that where equipment grounding (bonding) is required by Article 250, a separate equipment grounding (bonding) conductor shall be installed in the conduit. So the key is if equipment grounding (bonding) is required by Article 250, and the installation is nonmetallic conduit, then an equipment grounding (bonding) conductor must be installed. But the exceptions to 352.60 permit the grounded (neutral) conductor to be used for bonding at the following locations [250.142(A)]: (1) On the supply side or within the enclosure of the service disconnecting means [250.24(B)]. (2) On the supply side or within the enclosure of the disconnecting means for separate buildings [250.32(B)]. (3) On the supply side or within the enclosure of the disconnecting means of separately derived systems [250.30(A)(1)]. Q4. What is the NEC color code requirement for 120/208V and 277/480V systems? A4. The NEC does not contain color code requirement for ungrounded conductors, except 110.15 requ
