A commercial building with a three wire single phase 120 volt/240 volt service, with terminals rated at 60 degrees C, has a total load of 28,800 watts after all demand factors have been considered. The minimum size THWN aluminum phase conductors require d with this underground service will be:

A commercial building with a three wire single phase 120 volt/240 volt service, with terminals rated at 60 degrees C, has a total load of 28,800 watts after all demand factors have been considered. The minimum size THWN aluminum phase conductors require d with this underground service will be: