That 2004 job in the warehouse district changed my whole wiring approach

I still think about this one install back in 2004, an old textile mill in the warehouse district that was being converted into loft apartments. We were running zones through these weird exposed beam pockets, and the owner kept saying the place used to have knob and tube. Nobody thought to check the wall cavities for old wires before we started drilling. About halfway through the second unit, a staple from my own cable hit a live line and blew the breaker for the whole floor. The general contractor had to pay for a sparky to come out and redo the panel, and my boss took the hit on the labor cost, around $1,400. After that, I stopped trusting any building over 50 years old without doing a full walkthrough with a voltage tester first, even if the blueprints say it's all new. Has anyone else had a similar call where the building history screwed up your day, or am I the only one who got burned by ghost wires?

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the_sam19d ago

Getting burned once taught me to treat every old building like it might be hiding surprises. Now I run a quick scan with a non-contact voltage pen along any wall before I even unpack my tools, takes maybe ten minutes but saves way more time and money. That little habit has caught two live lines in the last five years that nobody knew were still there.