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GFIC keeps tripping?

6868 Views 11 Replies 8 Participants Last post by  Sean-a-Tron
Hi there,
New owner of pre-owned 2011 Volt.
I installed an outdoor GFCI outlet on a 20a circuit. Attached to this outlet is a load of another GFCI outlet and lightbulb in the garage. Once a week or so, the GFCI trips.
I tried replacing the GFCI with a new 20a GFCI outlet...still tripped.
I tried turning off the switch to the lightbulb and outlet in garage so it's not drawing any power - the outlet tripped again.
Anyone else had this problem? I read other forum posts and tried the suggestion of swapping a new GFCI. I'm wondering if this is an issue with the charger?
Any help greatly appreciated. Thank you!
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Just looking for some clarification, what else is on the circuit protected by the original GFCI? Doubtful it's the EVSE (technically the charger is in the car). It could be the original GFCI or the second GFCI might be wired incorrectly. Does the result change if you charge at 8A or 12A?
I believe you can have two GFCIs on the same circuit. Usually it's for the convenience of not having to take a long walk to reset the outlet. Not necessarily a good idea, especially when, as PH2 pointed out, the EVSE also has GFCI protection (so now its triple protected). Also agree with PH2 that the EVSE can trip them. A lot of things can actually.

The outlet is wired to another outlet and a lightbulb. There is nothing connected to the second outlet.
I haven't attempted changing to 8A. I'll try tonight.
If all that is on the circuit is two outlets and a light bulb then for practical purposes you have a dedicated circuit. The light bulb will not bother the EVSE. I thought maybe another room or rooms where on the same circuit.

If your outlet is already GFCI protected then you might try replacing the second GFCI outlet with a standard one. Might help. Might not. The upstream GFCI might still trip.
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