Individual conductors are bare copper and stranded for flexibility, with black PVC/Nylon insulation and marked with numbers for easy identification. The black Thermoplastic Elastomer (TPE) cable outer ...

All questions and answers are based on the 2017 NEC. Q. Does the NEC allow a cable tray to be used as an equipment grounding conductor (EGC)? A. Metal cable trays can be used as EGCs where continuous ...