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| It is a fairly common problem with block heaters and GFCI's. Most of the time the problem is taken care of with a new block heater. The GFCI trips when it measures a difference of about 6 milliamps between what current is going to a device and what current is returning. Whatever current that is not returning is taking another path through leakage current of the device. Unfortunately some of the block heaters leak enough to trip a GFCI in normal operations. Try replacing one of the block heaters and make sure your cord and ends are in very good condition and try it. | |
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Block Heaters & GFCI Outlets
