I have a cicuit in my home with a microwave,2 switches going to seperate light fixtures and a wall plug on it.the wiring in my home is 12/2 Romex and is about 15 years old. I have not had any problems with this circuit in the past, but when I tried to start the microwave the other day, I lost power to everything along that circuit.no breakers were tripped and there was no "popping" sound. Upon testing Voltage along the circuit at the plugs and switches, I have decreased Voltage readings starting with the plug to the microwave @ 67V, and ending with the switches @ 27v and 19V. I replaced the plugs and switches with no change in the Voltage readings. I am running a new line to isolate the microwave on its own breaker but that will not solve my problem with the Voltage loss,will it. Please help me on this.Thank you
SOURCE: gfci breaker for spa
gfci's are designed to trip if they receive voltage on there ground/neutral side, therefore my vote is for Smithbrother I would say there is probably a partial short somewhere in you system.
SOURCE: Ground Fault circuit Breaker trips each time a load is applied
The most likely causes in their order of probability are: 1) water somewhere in the circuit causing the hot wire to ground; 2) a legitimate trip caused by a defect in a device plugged into the circuit; and 3) a defective GFCI breaker. In the first case, wait until it has been dry for about a week and see if it trips. In the second case, make sure there is nothing plugged into the circuit and try resetting. In the third case go ahead and put the regular breaker in, then put a GFCI outlet into the first box downstream from the breaker. If installed according to the directions, that outlet should protect all of the outlets downstream.
SOURCE: two 15 amp arc fault breakers installed on two
It's possible that the first breaker that you said does not trip - it could be that breaker is failing to trip on a bad circuit. That is, it could be you have a bad circuit but that first breaker is not detecting it and pretends everything is OK. If your new breaker trips on the first breaker's circuit, the curcuit it probably bad and the breaker in not working properly. The most common problem for failed circuits is a stray ground wire in a box somewhere in the curcuit resting against a hot or neutral wire. You'll have to take apart every connection on that curcuit to find it. Not fun.
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