I just looked a trip curve for a 100 amp breaker. A 25,000 amp fault is clearly in the instantaneous trip part of the band, but the trip time for a 10,000 amp fault could be anywhere from instantaneous to 2 seconds.
Originally Posted by GoldDigger
Edit....those numbers are off by a factor of 10. The currents should be 1000 and 2500 amps, so there would be no difference with that breaker between a fault current of 10,000 and 25,000 amps.
Last edited by don_resqcapt19; 07-18-16 at 09:56 AM.
The code only applies to T&M work....it does not apply to contract work.