Customer

Maestro

April 26, 2007

Why does my ground fault circuit interrupter keep tripping?

Below my electrical panel I have a breaker (a ground fault circuit interrupter) that controls the electrical outlets on the outside of the house and in the garage. This breaker trips whenever there is heavy rain or lots of moisture from melting snow in Spring. There are two external plugs. One had a crack in the case and we siliconed and covered it with a plastic carton and duct tape (Just call me Red Green). This reduced the frequency of the breaker tripping but did not eliminate it. Any idea how I could isolate the source of this problem?

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Expert

Maestro

expert EXPERT April 26, 2007

As you can see in the attached illustration, a GFI outlet, or a GFCI breaker, protects the outlets downstream.You could isolate the problem by finding the outlet at the end of the circuit, and disconnecting it. (Simply turn off the power, remove the outlet, cap the wires, and place a cover where the outlet once existed.)



Working backwards from the end of the circuit, you will find the offending outlet. Replace the outlet and replace the weatherproof cover. Ground fault circuit interrupters are designed to trip at approximately.005 amps. They are very sensitive. Less sensitive breakers are available, designed to trip at .01 amps. They are commonly used with such things as submersible pumps, which trip regular GFCI breakers too regularly. Unfortunately they are expensive.

 

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This is a great place to go for advice, especially if you're low on funds and you could resolve the problem before calling and paying a service call, if it's an easy fix. I'm glad you are there for me.

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