GFCI circuits and vintage computers

Elemenoh

Active Tinkerer
Oct 18, 2021
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Bay Area
I recently remodeled my garage where I restore vintage Macs. The outlet circuits are GCFI at the panel by code. they’ve mostly worked fine but yesterday I plugged in a Lisa which works fine on other circuits but trips the new circuits in the garage immediately.

I’m guessing this is because the PSU might be a bit wobbly despite having all new caps. Perhaps it flubs just enough to provide GFCI feedback that something’s wrong.

I figure a power conditioner / battery backup would act as a buffer and solve the problem but am curious of you all have experienced anything similar and what you did to resolve it.