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Pro tip: spent 4 hours chasing a ground fault that turned out to be one staple
Did a panel swap in a shop off Delany Road and the new can kept tripping the instant I powered up zone 3. I metered every loop, swapped the keypad, even ran a temp wire across the floor before I finally crawled the whole run on my hands and knees. Turned out a staple from the original install in 2009 had nicked the jacket just enough that the conductor was kissing the ground the whole time. Four hours for a 30 second fix. Any of you keep a TDR in the truck for stuff like this, or do you just start crawling?
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christopherwilson8h ago
Man, hate to say it but the staple wasn't really "kissing" ground, if it nicked the jacket and hit copper that's a dead short to ground. Kissing would be a partial deal that trips sometimes or shows up on a megger. Either way yeah, four hours for that stings bad.
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