Reduced Neutral in 3 Phase System
Reduced Neutral in 3 Phase System
(OP)
I'm sizing wires for a 3 phase 45 kW inverter in a photovoltaic system. The inverter only requires the 3 phase conductors, but the kWh meter we're installing requires a neutral. Does the neutral need to be the same size as the phase conductors? I can rationalize making the neutral smaller, since it's only for the meter and won't carry any current, but I can't find an NEC reference to support a reduced neutral.
Thanks,
John
Thanks,
John






RE: Reduced Neutral in 3 Phase System
230.42 A,B,C and 250.24C 1,2 and 3.
RE: Reduced Neutral in 3 Phase System