Most people who die at home from electrocution get "stuck' on a circuit by having one hand on one side of the circuit, and the other hand on the other side of the circuit. The ensuing current flowing through your body overrides your nervous system, causing you to lose control of the muscles which have the current passing through. This causes a "death grip" in the case mentioned, because you cannot voluntarily let go of the circuit. Current passing across your chest (arm to arm) causes the heart to go into fibrillation. If you are not removed from the circuit, you will eventually die due to an artificially induced heart attack. Even if you are removed, sometimes the heart does not come out of fibrillation on its own. In that case, unless you receive defibrillation from EMT personnel, you will still die.
In most cases, only 5 thousandths of a ampere of electricity is necessary to kill you, which is six tenths of a watt, which is about the amount of power that a single sub-miniature Christmas light bulb consumes. The statement that the circuit breaker will trip, is grossly incorrect.
I am a retired electronic engineer, and I got into the "death grip" scenario I mentioned. I was on the circuit for what seemed like an eternity, because it was SO painful, but people around me tell me they estimate it to be about 10 seconds. I was saved by someone who pulled the plug of the circuit I was on. I turned as white as a sheet, and couldn't breathe after I came off, but fortunately, my heart came out of fibrillation on its own, and after a few minutes, was fully recovered. After going through that pain, I would NEVER consider using electricity to ctb.
I don't know if electricity passing front to back will have the same effect on the heart as passing from side to side, as happened to me. I would suggest locating the electrodes under each armpit, to duplicate the side to side scenario.
I would also like to suggest a less painful method.