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Switched from using my hands to a torque screwdriver for panel terminations and I'm never going back
For years, I just cranked down on lugs and breakers until they felt tight, thinking 'good enough' was fine. That changed after a call back to a strip mall unit where a feeder lug had worked itself loose, causing a hot spot that melted some insulation. The fire marshal showed me his own torque wrench and asked if I used one. I felt like an idiot. Now, I carry a Wera torque screwdriver set to spec for every job, from 12 in-lbs for a 20-amp breaker up to whatever the manufacturer says for the main lugs. It adds maybe two minutes per panel, but I sleep better. Has anyone else had a close call that made them switch to a more precise method?
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vera2926mo ago
Honestly, that "good enough" mindset was exactly where I was at for a long time too. It just seemed like extra fuss for no real gain. Then we had a service call for a flickering light problem that turned out to be a loose neutral in a sub-panel, and the terminal block was pretty scorched. Seeing that damage up close, and the boss explaining the liability, was a real wake-up call. Now the torque driver is just part of the kit, like a tape measure. It feels less like a hassle and more like just doing the job right the first time. Your story about the fire marshal would have made me sweat.
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charles_kim6mo ago
That scorched terminal block is a solid example. I'd just add that the actual torque specs are usually printed right on the breaker or inside the panel cover. It's not a mystery number, it's just part of the manufacturer's instructions.
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jessel354mo ago
A scorched terminal block will change your mind about a lot of things.
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