I need advise and source for 440v 3 ph GFI. It will use 30 amps for a very short duration, a few cycles in a heating/welding application. I know nothing, and web has been next to useless. Any help would be appreciated
Steve, can you describe in some more detail how that is set up? In a residential setting, does it interrupt all 3 lines even for a fault on a
220V single phase circuit? Or are most of them just 220V single phase GFI's? How about a 380V circuit? What sort of actual 3 phase appliances do you find in a home there?I have read some about 3 phase GFI's for entire building distribution systems, that deal more with fire prevention than low-current faults that are a shock hazard but not a fire starter. Trip currents way up in A not mA. Just curious.
Bob
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