BTW, a good electrician should have had a gfci tester, not the $7 job,
but the one where you can dial in the 'leakage' to see if it's
tripping at the right set point.


Now GFCI's are suppose to trip so we need to also know what is also
occuring when it trips(example, running the vacuum, or plugging in
something).

hth,

tom @ www.ChopURL.com






Good points. The circuit trips sometimes when the vac is running and
other times when it's not. Central vacs in the garage must have this
problem all the time because when you don't change the can dust blows
into the motor housing and in a garage in Canada (cold, wet 11 months of
the year, 40C 100% humidity the other month) that dust gets pretty wet
and stringy and probably conducts pretty well.

Rob