BigFly10 wrote:
3 tons wrote:
Upon re-read,
"The other cable to the ATS comes from a 30-amp breaker in the main breaker panel. At the main breaker panel, the cable going to the ATS has positive terminated on the breaker outlet, neutral on the neutral bar, and ground on the ground bar."
Since your ATS switch receives it's A/C input from the main panel, your problem may be one of competing 'circular currents' causing the sensitive inverter GFI outlet to trip. Try powering the ATS from ahead of the main panel (where shore power first enters coach), not after (then divide entrance (in parallel) to main panel & ATS), and you should see a difference, problem corrected...
Best Regards,
3 tons
I seriously considered wiring the system as you suggest when I set it up, however, I was concerned about how to limit the incoming current to the allowable 30 amps. If I tied off before the main breaker, then I could potentially be supplying up to 30 amps to the main breaker in addition to whatever the maximum is that could also be going to the ATS or sub-panel. It means that I would have to install an additional current limiting device upstream of where my parallel branch starts. To me it seemed easier just to use one of the empty slots in the main panel and then supply the sub-panel from the main panel.
Regardless, what you say makes sense and I may end up going this route if nothing else solves the problem. Thank you for the suggestion.
This (in my view - as wired) is an unnecessary safeguard that is causing your present problem in its entirety (circular currents that your GFI is sensing...), since (if power were to be somehow mismanaged/exceeded by you) the C/G pedestal will trip at 30amps anyway...
A change will provide the relief you're looking for...As presently wired, a hard-wired inverter will solve the problem as well...
