When I was mere few weeks out I was dispatched to replace a disconnect that was wired around in a section 8 townhouse complex. I went down to the basement and opened the panel and saw main and sub main. Being new, I thought well I'll just kill everything with the main. Flipped it and the place went dead quiet and dark...good to go. I opened the outside disconnect and the thought happen to hit me...if they wired around a disconnect - what else did they do? Whose to say this disconnect is even fed by the panel in the unit. Metered it and it was hot as a firecracker. Main does not kill sub main.
I was about to dig in with both hands, thinking it was dead. I could easily have been burned, dismembered or killed.
So what's up with these "volt sticks"? Like a non contact voltage sensor? Sometimes RTUs make me nervous with all the water that sits around up there - would be nice to have something easy to rule out a short to cabinet.
I was getting complacent/lazy recently. wasn't checking voltage after throwing disconnects. went to a building with 2 RTU's.....threw the breakers in the disconnect on the first one, changed contactors, went to the second unit. threw the breakers, opened the electrical panel,was just about to touch the contactor........the unit fired up.
made the decision right then to ALWAYS check voltage.....regardless of what I "know"......