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Old 03-20-2013, 12:26 PM   #1
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Garage GFCI trips every 10 secs after a storm


There was freak storm last night at my place. This morning the GFCI in my garage keeps tripping every 10 secs or so. I already checked the circuit breaker.

I called the electrical warranty for my house since it's just 1-year old but I have to wait till friday.

any ideas what could be causing this since this is DIY forum maybe i'll be able to fix it myself or learn a thing or two..

i saw this in another thread..
"Also, your garage door opener could be leaking current, if the outlet that it is plugged into, also is downstream of the gfci."

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Old 03-20-2013, 12:49 PM   #2
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Garage GFCI trips every 10 secs after a storm


A GFCI is an electronic device. And lightning can wreck havoc on electronic things. So I would replace the GFCI outlet.

Also something electronic plugged into that outlet or another outlet protected by that GFCI, which is electronic, could be the problem. Try unplugging things and see if it then works.

Lightning is weird. I've seen some electronic things totally fried and something right next to it not damaged at all!

Note: Many new electrical things have electronic controls - on/off switches these days. Check all those for proper operation. Old things with a mechanical on/off switch like an old fan are not bothered by lightning usually.

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Old 03-20-2013, 01:06 PM   #3
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Garage GFCI trips every 10 secs after a storm


Check for water in the outside receptacles.
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Old 03-20-2013, 01:09 PM   #4
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Garage GFCI trips every 10 secs after a storm


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Check for water in the outside receptacles.
i didnt understand this.. you mean the gfci receptable? it cant have water coz it's inside the garage and is like 3 feet above the slab..
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Old 03-20-2013, 01:16 PM   #5
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Garage GFCI trips every 10 secs after a storm


The gfci protects the outside receptacles, so that is where the water is that is tripping the gfci, or you have a bad gfci.
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Old 03-20-2013, 01:17 PM   #6
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Garage GFCI trips every 10 secs after a storm


a lot of times a gfci outlet will protect the outlets outside. if you have an outside outlet that got wet then you would have that problem. check all of your outside outlets to see if they got wet.
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Old 03-20-2013, 01:17 PM   #7
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Garage GFCI trips every 10 secs after a storm


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i didnt understand this.. you mean the gfci receptable? it cant have water coz it's inside the garage and is like 3 feet above the slab..
The garage GFCI probably protects one or more outdoors receptacles that are fed from it. One of them got water in it, and is now tripping the GFCI. This is almost certainly the problem.
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Old 03-20-2013, 02:53 PM   #8
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Garage GFCI trips every 10 secs after a storm


It's certainly possible the outlet in my porch got wet. I'll check when I go home.

Will this be resolved by just waiting for the outside receptacle to DRY?
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Old 03-20-2013, 03:26 PM   #9
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Garage GFCI trips every 10 secs after a storm


It might go away by letting things dry out, but I wouldn't call it resolved. What do you think will happen next time ?

I would open any outside receptacles or lights on the same circuit and see it I could find which one it is. Allowing any standing water to drain out will speed up the dryout process, as would leaving the "water proof" cover off for a few hours.

If you find the problem receptacle/light, you can then look for/repair the water entry point. Stopping the water entry will resolve the problem.
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Old 03-20-2013, 03:54 PM   #10
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Garage GFCI trips every 10 secs after a storm


There's waterproof case that I think I didnt securely close. I'll check when I go home.
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Old 03-20-2013, 06:56 PM   #11
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Garage GFCI trips every 10 secs after a storm


I give up. I'll wait on Friday. All receptacles outside are dry. Waterproof case was securely close.
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Old 03-22-2013, 12:21 PM   #12
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Garage GFCI trips every 10 secs after a storm


i just to let you know that you were right. one of the outside receptacles was still wet on the inside.

about 2 days after storm everything is ok. electrical contractor still replaced the gfci with a better brand even though everything was fine.

he recommended i buy some silicon paste and put it on to seal the waterproof casing. although he said moisture from the bricks may also cause gfci to trip.

at least now i know in case another heavy rain happens again.

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