Quote:
Originally Posted by mike31154
But again, yes, I don't personally use grounding probes because their presence can actually hide or mask a problem all the while giving you a warm and fuzzy because you have one installed. Power can be a funny character, lots of gremlins in the wiring. GFCI is the way to go for your personal safety.
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I'm confused by this. I had a small powerhead that was causing me to get a small shock every time I put my hands in the water, it was plugged into a gfci as was everything else in the tank, yet the gfci was not tripping. At the time I did not know which device was causing the shock. We picked up a grounding probe and it instantly tripped the circuit. Had to use a process of elimination to determine the faulty device. So until the grounding probe was in the tank the gfci wasn't ever going to trip to warn of an issue or possible harm. So my question is how do you know when a gfci is going to function properly to possibly save your life? For now I will trust my probe.