Never doubt yourself.

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I find it much easier to turn off the breaker for the circuit and then use
both hands.

This is the first choice, for professionals and newbs alike.

I wont work on a hot circuit over 20a 120v or anything 240. 277/480v HURTS, ALOT, but that commercial voltages.

Good job RICHARD.

Yep, sounds to me like it was that old work that kept the system tripping.
I have about 4 circuit breakers for power, one for light, one for stove and one for hotwater unit. I guess I'm just greedy for lots of circuit breakers.

4 circuit breakers??!!

I live in a 900sqf house and if I rewire it Ill have a minimum of 19 circuits, only have 15 right now.