Nietz001
Member
- Location
- St Paul MN
I have a 112.5 kva dry type transformer. At 208, 3 phase volts I calculate it will produce 312 volts on the secondary. Can I install a 400 amp MCB anp panel?
I agree with Charlie but keep in mind the conductors must be rated at least 400 amps not 312.
I'm lazy, can you give me the NEC reference so I don't have to find this.....:ashamed1:
240.21(C) Transformer Secondary Conductors. A set of conductors
feeding a single load, or each set of conductors
feeding separate loads, shall be permitted to be connected
to a transformer secondary, without overcurrent protection
at the secondary, as specified in 240.21(C)(1) through
(C)(6). The provisions of 240.4(B) shall not be permitted
for transformer secondary conductors.
But I was felling lazy ....