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CTB16PC GFI


Mickpat
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I have a CTB16PC and channel 16 causes both GFI breakers to trip when anything is connected to it. If I disconnect channel 16 all of the other channels work as expected. I have tried two different 100 mini strings and both cause this problem when connected to channel 16. The mini lights work fine when connected to another source. My other CTB16PC board is working fine. Any ideas what to look for? Of course I only tested a handful of the channels when I got the board this summer.

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Sounds like you have channel 16's neutral going to the wrong side of the card? GFI's work by making sure the hot and neutral currents are balanced, and if one channel gets the hot from one line in and the neutral from the other line in, the GFI's won't be happy at all...

-Tim

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You fixed it! That appears to have been the problem. Channel 16 netural was connected to the left side. I moved it to the right and now it works! Thank you so much...

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