Based of 2008 NEC:
It is my interpretation that article 590 allows the use of flexible single-conductor cable without attachment plugs for temporary, emergency situations. If I use a single-conductor #4/0awg type-W cable per phase on a 480V system, and terminate both ends using 75 degree C lugs to a circuit breaker, wouldn't the ampacity of the circuit be limited to 230A? It is my understanding, that per the requirements of 110.14(c) that the ampacity of the termination would be limited to the 75 degree C column for #4/0awg from table 310.16 (which is 230A), even the the ampacity of the cable itself is rated 405A per table 400.5(b). Is this correct?
Thank you
It is my interpretation that article 590 allows the use of flexible single-conductor cable without attachment plugs for temporary, emergency situations. If I use a single-conductor #4/0awg type-W cable per phase on a 480V system, and terminate both ends using 75 degree C lugs to a circuit breaker, wouldn't the ampacity of the circuit be limited to 230A? It is my understanding, that per the requirements of 110.14(c) that the ampacity of the termination would be limited to the 75 degree C column for #4/0awg from table 310.16 (which is 230A), even the the ampacity of the cable itself is rated 405A per table 400.5(b). Is this correct?
Thank you