My guess is that the 'fridges & aircon units have suppressor caps to
minimise spike generation on turn on & off.
These present a useful leakage path to earth that trips the interruptor. -
especially under switching conditions.
Richard P





> The fridge kept tripping the GFI interruptor.
> ... but I still don't see why it needs to leak
> that much current to the ground."

Couldn't be the arcing from the fridge thermostat
contacts opening and closing that drives the GFI
nuts - could it?

I have a self-designed electronic thermostat that
drives a contactor on my 'fridge - and I have an
appliance off a wall-wart on the same circuit that
sometimes gets reset when that contactor cycles on
or off (it's easy to tell when this appliance gets
reset - it starts to make a loud squawk) ...

RF Jim

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