Shoutout to the old timer who told me to always use a torque wrench on main lugs
Honestly, I had a rough Tuesday fixing a call back from a job my apprentice did. He wired a 200-amp panel in a new build over in Springfield and didn't torque the main lugs. After three days, the whole thing started arcing and melted the bus bar. The boss was mad, the homeowner was scared, and we lost a full day and about $500 in parts. I used to think a torque wrench was overkill for residential, but that day changed my mind. Has anyone else had a simple skip cause a major meltdown?
Not cheap at all. Somebody told me that kind of failure can take out a whole production line for hours. Just a ton of money down the drain over something that should've been caught earlier.