Re: Shore power, small battery charger, genset, inverter.
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On our SM, the main circuit breaker is also a GFCI. On mine, this is indicated by a label reading "I∆n = 0.03A" on the circuit breaker, which means it has a 30mA ground fault limit. Given that your breaker is tripping instantly and there is no sign of overcurrent (presumably the branch breaker for the charger is of a lower rating than the main one, so it should trip first), I bet you're seeing a ground fault. This could be due to a failure inside the charger or something entirely unrelated. Is the charger specified to accept both 50Hz and 60Hz AC?
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA
On Wed, Jul 22, 2020 at 1:49 PM Craig & Katherine Briggs SN 68 Sangaris Tropic Isle Harbor, FL via groups.io <firstname.lastname@example.org> wrote: