Hope everyone is safe and well.
Came across this wiring installation. It is a walk in generator housing with a 500 kW Diesel Fueled machine. The enclosure is locked and available to company personnel who may or may not be qualified. There is a diesel base tank under the unit. The installing contractor came up with conduits under the slab and entered them into a horizontal cable tray with a metal cover. This extends horizontally under the machine to a vertical section of cable tray which enters the circuit breaker enclosure. The wiring is THHN-2 and does not appear to be rated for cable tray. If this is a violation, can someone quote the NEC sections that apply. Is there a single conductor 500 MCM tray cable that could also be installed in conduit?
Thanks in advance.
Came across this wiring installation. It is a walk in generator housing with a 500 kW Diesel Fueled machine. The enclosure is locked and available to company personnel who may or may not be qualified. There is a diesel base tank under the unit. The installing contractor came up with conduits under the slab and entered them into a horizontal cable tray with a metal cover. This extends horizontally under the machine to a vertical section of cable tray which enters the circuit breaker enclosure. The wiring is THHN-2 and does not appear to be rated for cable tray. If this is a violation, can someone quote the NEC sections that apply. Is there a single conductor 500 MCM tray cable that could also be installed in conduit?
Thanks in advance.
