Just burned a whole Saturday on a bad voltage tester
I was troubleshooting a weird flicker in a kitchen remodel last weekend. My old voltage tester, a cheap one I got years ago, kept giving me a faint, inconsistent reading on a circuit I knew should be dead. I spent probably four hours tracing wires, checking connections at the subpanel, the whole nine yards, thinking I had a ghost voltage or a shared neutral nightmare. Finally, I drove back to my truck and grabbed my backup tester, a Fluke. It read a solid zero. The old tester was just faulty and reading phantom voltage. I lost a full day's pay, about $400, because I didn't trust my gut and check my gear first. It's a rookie move I haven't made in years. What's your go-to method for verifying your testers are still reading true before you start a job?