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Posted by on December 23, 2007, 4:03 pm
I recently attempted to reduce the noise and vibration from a bathroom
vent fan by putting small pieces of a rubber sheet between the fan's C
clamp and the mounting box. Not long afterwards, when I turned off
the fan a nearby GFCI outlet tripped. But the fan is not downstream
of the outlet -- the fan still worked even while the outlet was
tripped.
How can a device trip a GFCI when it's not downstream?
Is it a bad idea to leave the rubber in place? Could it cause
problems since the fan would no longer be grounded to its mounting
box? The fan is plugged into a standard two-prong outlet in the
mounting box.
-Apr
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