It's done the same on 2 different breakers, one is
a 100A one running my
whole house (only a fridge, Mac Mini and hi-fi physically on) and the other
is an 80A one at work with nothing else on it.
And the mains plug fuse doesn't blow? This does not sound like an
overcurrent fault to me. Is the 100A breaker an RCD type of thing?
(actually, it sounds like a 100A-rated RCD used as a main switch in the
consumer unit to me, those are _not_ 100A breakser and will not trip on
over-current, just on earth leakage).
[...]
Well, the machine works until the pop, unless the RD52
is pulling too much
but in that case I'd expect the PSU breaker to pop first. It'd be nice to
Actually, I'd expect the PSU to go into overcurrent shutdown mode or
something. In gneral, the input circuit breaker only trips if there's a
failure i nthePSU iteslf. Any problem with the load will shut the supply
down with no other effects
-tony