Converter Size Tactics Question

This will not be of concern to most, but may be of interest. I am not certain of my plan, so any comments welcomed.

The problem arose when I stuffed my 100amp PowerMax adjustable voltage (called a PMBC-100) converter/power supply in the old truck- camper to be its "converter" set at 13.8v when away from home. The locations for that camping have 15a 120v shore power connections on long wire. It usually all works great.

However, it happened that the power went out at one of those places in a wind storm (trees fell on lines) so by the time power was restored, the batts were down, and the converter kicked on (100amper although PF corrected) and so did everything else come on all at once, which popped the breaker up where the 15a shore power was coming from.

So, since around here that can happen again, I decided that the 100 amper is too much for this role, even when set at 13.8v. So I decided to get a 55amper instead. I think it (non-PF corrected) will pull fewer VA than the PF-corrected 100 amper --but not by much?)

So my choices are now--

A. Yank the 13.8 fixed voltage 7355 converter (lower portion) from the 5er and stick that in the TC, and use the PMBC-55 adjustable voltage as the 5er's new converter, or

B. Just put the new PowerMax 55amper PMBC in the TC, set at say, 13.8v (the "converter" set-up in the TC is portable, so I can still use it in the 5er or garage as required)

I just don't know if it would still pop a breaker up at the "pedestal" either way, where the 100amper did. (Some kind of surge with the high amps at first I figure, since it is rated for a 15a circuit)

At home on shore power, the TC just needs a battery maintainer, which can be my 2 amp 13.4v job, which works great, or any amps size of fixed voltage converter (I have used the adjustable voltage 100 amper for this too) but the 2amper is useless as a converter away from home, where as soon as you turn on a light (3 amps) it (2 amps) falls behind.

So I am looking at having a 55amp, fixed voltage "converter" for when on shore power away from home, but where it might get cut off once in a while, and I don't want to pop the "pedestal" breaker when power comes back on.

So, what would be the way to go? Thanks.

PS. I was also hoping to use the PMBC for its 16.5v to equalize my T-1275s, but I am told they have put a new board in those, which has a lower max voltage range to maybe 15.8v (Web-site specs to be updated on that)