- Nov 12, 2017
- 12,663
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I always stick one of these in a socket just before I shut off its breaker. For light switches I rely on the light itself. But testing more thoroughly is pretty good advice.You were lucky to not get seriously hurt. My older bro is an electrician and he yelled at me once when I faced timed him to help with something and I said I cut the breaker when he asked me did I shut off the power. He said did I use my tester to test to be sure. I had not and he told me anything mechanical can fail and you always test even though you cut the breaker. That's why they tend to use fuses in commercial/industrial applications.
To uphold my geeky rep, check this: in both of the two houses I've lived in, I took the time and the considerable effort to create an Adobe Illustrator drawing of every single electrical device in my home, then meticulously determined which breaker feeds it. I never rely on this alone to shut down power to what I might be working on, I still test, too, but over the years this has been an effort that has paid for itself. Better than running back and forth from plug to breaker panel, or yelling out the window at someone working the other end for you, clicking through breaker after breaker until the right one is found.
Here's a snap shot of one corner of my house. I devised a key of symbols and colors that tells me what each device is, its breaker, its amps, its relationship to a GFI circuit, etc. The red stands for the circuit breaker for my 24-7 home automation computer, as in: DON'T SHUT ME OFF UNTIL YOU SHUTDOWN THE COMPUTER!

And of course I plotted all the breakers that run my pool and yard, like the blue ones floating off to the right.
This also gave me a good sense of just how lazy and cheap the electrician was!!
Geek on!