surf more
Senior Member
- Location
- eastern NC
came across a question---
a 4600 volt,4/0 3 conductor copper cable is in isolated conduit in air.what is the max allowable rating of a circuit breaker used to protect the ungrounded conductors?
answer key=1200amp
i went to 310.75,and 240.101 but for some reason,,i am totally missing it.
if someone could break this down for me i would be very thankful!!!!!!!!!!
i went threw problems like this num...times,but my problem now is i took a break from this stuff--and it seems it was to long of a break!!!
a 4600 volt,4/0 3 conductor copper cable is in isolated conduit in air.what is the max allowable rating of a circuit breaker used to protect the ungrounded conductors?
answer key=1200amp
i went to 310.75,and 240.101 but for some reason,,i am totally missing it.
if someone could break this down for me i would be very thankful!!!!!!!!!!
i went threw problems like this num...times,but my problem now is i took a break from this stuff--and it seems it was to long of a break!!!