Landscape lighting transformer tripping AFGFCI


Old 12-31-16, 04:51 PM
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Landscape lighting transformer tripping AFGFCI

I installed a dedicated new circuit for my landscape lighting. I decided to use a AFGFCI breaker (in the main distribution panel in basement, rather than a GFCI outlet outside). I have a toroidal transformer and only LED lighting. The breaker often trips when the circuit is activated (with either timer, light sensor or even manually) It may work several times, or just once. Seems to be more when switching "ON" that it happens. Not related to rain or weather. To reset the breaker, it sometimes take 2 to 4 throws.

I have several taps on a few different voltages for different runs. I am way below full capacity.

I was wondering if there is a problem using Arc fault instead of just GFCI?? If not, what else could it be?

Thanks for any suggestions!
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Old 12-31-16, 05:22 PM
Join Date: May 2015
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Most of those combo breakers have indicators that tell you what kind of fault caused the last trip. Does yours?

Some loads are problematic for AFCI breakers, and your transformer may be one of them. If the indicators tell you it's an arc fault tripping the breaker I'd be inclined to try a straight GFCI.
Old 12-31-16, 07:40 PM
Join Date: Feb 2016
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There is no good reason to use an Arc fault breaker on that circuit.
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