On Wed, 16 Jul 2008 10:15:28 -0700 (PDT), email@example.com wrote:
First make sure you don't have any GFCI receptacles in the bathroom
that are tripped then:
Are any rooms on the same circuit and working? Lighting and
receptacles can be on the same breaker, but IMO this is a poor way to
do it, since trips almost always happen from outlets.
Start in the room closest to the panel and take out the light fixture
in the room and check for voltage.
The last room where the power is working is where I would start, or
the first room where it isn't working.
If you have access to the ceiling, checking how the wiring was
installed will be a big help in finding the problem
Start closest to the panel.
How about more information? Is this a four way switch set up to one
fixture? Does each switch control a separate fixture? Knowing what is
supposed to happen is important to diagnose the problem.
As Joe indicates, you need to furnish more information for anyone to steer
you in a logical direction. First, determine exactly what is dead. Is it
just the lights controlled by these switches or are there outlets dead as
well. Are these individual light fixtures, and what rooms are they located
in. Sometimes a large center hall fixture will be supplied by a dedicated
circuit if it has lots of lamps on it, and sometimes an entire floor of a
house can be on one circuit if it's small enough
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