Just noticed this post. Just wondering. I've heard this sound in conduits( rattling sound of the wires), and the breaker not trip. Is there any way to troubleshoot this problem or fix it. Is it just the overload situation that does this, and it's not enough to trip the breaker? Maybe to small wires for the load? I've mostly heard it on circuits that have motor start up's on them. Just curious. Need to know how to explain it. Thanks ....Steve
