MTG
Member
- Location
- Clifton, NJ
Does anyone have experience designing an airplane hangar? I am working on a project for a private airport hangar where the customer wants seven (7) locations for "Ground Power Unit set-ups". Each set up would have four receptacles (all 3P/4W):
At each location, typically only one receptacle would be used at a time to power a GPU (which provides 400 Hz power to an airplane while in the hangar). In rare cases a second receptacle may be used at the same time, but it would not be same voltage (i.e., one 480V and one 208V at the same time). So I can power both 480V receptacles on the same 100A/480V circuit (and both 208V receptacles on one 100A/208v circuit).
My question is in sizing the panel (and subsequently the building service) - can I diversify the loads? It seems overkill to use an 800A/480V panel and an 800A/208V panel when all stations won't be maxing out at the same time. I can't find anything in the NEC that addresses this. Looking for some guidance/advice. Thanks
- (1) 480V 100A
- (1) 480V 60A
- (1) 208V 100A
- (1) 208V 60A
At each location, typically only one receptacle would be used at a time to power a GPU (which provides 400 Hz power to an airplane while in the hangar). In rare cases a second receptacle may be used at the same time, but it would not be same voltage (i.e., one 480V and one 208V at the same time). So I can power both 480V receptacles on the same 100A/480V circuit (and both 208V receptacles on one 100A/208v circuit).
My question is in sizing the panel (and subsequently the building service) - can I diversify the loads? It seems overkill to use an 800A/480V panel and an 800A/208V panel when all stations won't be maxing out at the same time. I can't find anything in the NEC that addresses this. Looking for some guidance/advice. Thanks