Fluorescent light trips GFCI breaker on a different circuit


Old 07-08-16, 11:35 AM
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Fluorescent light trips GFCI breaker on a different circuit

I have an 8' T12 HO fluorescent fixture in my garage, wired to a (non-GFCI) lighting circuit. I had to replace the ballast with an 'improved' electronic one. Now, when I turn the light on, one of my GFCI-protected receptacle circuits trips (sometimes immediately, sometimes after a minute or so). All of the threads I've found with related issues seem to have the light on the GFCI circuit - not my case.
The GFCI breaker is 30 years old. Another one (same age) does not trip. Both GFCI circuits are in the garage.

Any suggestions appreciated.
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Old 07-08-16, 01:15 PM
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The GFCI breaker is 30 years old.
GFCI breakers are sometimes sensitive the electromagnetic fields. This is especially true for older GFCI breakers. Can't say why the other one doesn't trip but replace the one that does trip and see if that cures the problem.
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