Total Neutral load well run about 500 amps MAX. 3/0 =200ampx8= 1600 amp Neutral. 480 volt Mtr loads 300hp several, 200 hp, 100, hp and several smaller well NOT effect the Neutral. all except lighting 277 is off 480/120/208 transformers. Code SAYS no larger then Required has to be installed. So where are you getting theses Larger Neutral requirements???I can see putting in whats required But not a lot more.
