IllinoisElectrician
Member
I'm sizing wires for my first 3-phase 4-wire High-Leg Delta. It's only a 100A service. Do I need to derate my service entrance conductors to 80% of their ampacity because in the entrance there are 4 wires in the conduit.
That would mean I'd have to go from #3 to #1. Is this accurate?
The grounded conductor does not have to be larger than any of the phase conductors correct? But should be at least he same size? These are for 3-Phase outlets that the customer plugs his machinery into.
That would mean I'd have to go from #3 to #1. Is this accurate?
The grounded conductor does not have to be larger than any of the phase conductors correct? But should be at least he same size? These are for 3-Phase outlets that the customer plugs his machinery into.