This is typically what you'll see in homes and small businesses 1 volts and 240 volts for a singlephase, and 1, 8, and 240 for threephase Depending on how a transformer is wound at the service, you'll have 8/1 or 240/1, and in the case of a 3phase 4wire Delta application, you'll have 8/240/1 all in the same serviceWhen using 1/8V single phase, you will use any two of those same three hot conductors, with the two waveforms peaking 1 degrees apart from each other When one waveform is at its peak, measuring 1V, the other is only part of way through its cycle, measuring only V The sum of the two is 8V1240 Single Phase 18 Three Phase Connected load Demand load Connected amps Demand amps Load Connected Load Demand Factor Demand Load Lighting X 125% = Gen use receptacles 10 KVA X 50% = 120/208 single phase