Trying to figure out available fault current for a transformer. Utility has not responded to any of my calls.
Transformer 500KVA,208/120,3ph,4wire,assuming Z=1.2%
500K/(208x1.73x.012)=115792
Existing switch gear is all fused and want to set an MDP within 50'.
Am I correct in the fact breakers must have a 100KAIC rating, without talking to utility.
Transformer 500KVA,208/120,3ph,4wire,assuming Z=1.2%
500K/(208x1.73x.012)=115792
Existing switch gear is all fused and want to set an MDP within 50'.
Am I correct in the fact breakers must have a 100KAIC rating, without talking to utility.