E > I bought a big air compressor. Plug into one of my outlet and it
E > tripped the breaker. So I unplug and connect it to an outlet that also
E > used for my washing machine. This time, no breaker was tripped (at
E > least that's what I see from the panel.) But that whole circuit is now
E > without electrcity. Could anyone help with possible cause and fix?
E > The house is 40 years old. The breakers and panel are all Zinsco.
A circuit breaker will trip when too much current passes through it.
How much current does the compressor use (should be on the plate or in
the manual) at start up? You may need to add a dedicated circuit for
your air compressor.
As for the dead circuit, breakers will sometimes trip without moving
the handle. Flip the breaker for the washing machine to OFF, then
back to ON. If this doesn't work it is possible the breaker died (of
old age) and/or there was a loose wire and the overload did the final
opening of the faulty connection.
Based on your post it appears you don't know too much about
electricity (we all had to learn!), so I would suggest calling in an
electrician for the repair. He or she can also advise you of the need
for a dedicated circuit. Might not be a bad idea to have the
electrican do a maintenance check on your electrical system as it is
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