Barjack
Member
- Location
- St. Petersburg, FL
I know its possible to do this, but the way I would like to do it may not be legal.
This is a new building, service will be 3 phase wye, 800A gutter feeding 4 200A meterbases with disconnects. The disconnects each feed 200A panels inside the building. The main occupant is a doctor, and he has decided he wants a generator to back up the panel that feeds his computer equipment and other circuits he has deemed critical. As always, money is tight, and he doesn't want to spring for a 3 phase generator. The panel in question is mostly completed, and I do not like the idea of tearing it apart and installing a transfer switch/subpanel that would back up the necessary circuits. Would it be legal if I installed the generator transfer switch to back up A and B legs and arranged the breakers so that the backed up loads would fall on A and B? The only 3 pole load on the panel is the A/C, and I would install a NC 3 pole contactor to open it up when the generator turned on. I would also install a NC contactor on C phase to open when the generator is on.
I realize this sounds a little off the wall. You can probably guess I don't have much experience dealing with generators. Its just that at this stage, redoing the necessary circuits to back them up with a transfer switch/subpanel would be a major PITA. Would this work?
This is a new building, service will be 3 phase wye, 800A gutter feeding 4 200A meterbases with disconnects. The disconnects each feed 200A panels inside the building. The main occupant is a doctor, and he has decided he wants a generator to back up the panel that feeds his computer equipment and other circuits he has deemed critical. As always, money is tight, and he doesn't want to spring for a 3 phase generator. The panel in question is mostly completed, and I do not like the idea of tearing it apart and installing a transfer switch/subpanel that would back up the necessary circuits. Would it be legal if I installed the generator transfer switch to back up A and B legs and arranged the breakers so that the backed up loads would fall on A and B? The only 3 pole load on the panel is the A/C, and I would install a NC 3 pole contactor to open it up when the generator turned on. I would also install a NC contactor on C phase to open when the generator is on.
I realize this sounds a little off the wall. You can probably guess I don't have much experience dealing with generators. Its just that at this stage, redoing the necessary circuits to back them up with a transfer switch/subpanel would be a major PITA. Would this work?