I am switching out my old switches for automated one and in one of the bedroom I ran into an odd situation.
-The OLD switch had a: black, black, green wire -The new switch have a: red, black, white and green wire
I turn off the circuit breaker for that bedroom and confirm it was off. When I wired the new Switch, I connect all the wire BUT noticed that if I connect the White wire to the switch, it somehow bypass the circuit breaker and there is power to the switch...
If I don't connect this white wire then, the switch will work once I turn on the circuit breaker for that bedroom on again.
Note: When the power was on (and nothing was connected to it), the voltage tester show that there was only 1 wire that had power (and it wasn't the white one) so i assume that the white would be the neutral.
Anyone got any idea on why the white wire would bypass the circuit breaker?
Edit: It also appear that with that white wire, its now part of the masterbed room circuit...
In my case, all these switch have netural wire which is fine, as the rest of the house got changed over to these smart switch already and are working as expected.
It is only this one bedroom (lets call this "Bedroom A")light that it is interesting.
In which if the Netural wire in Bedroom A is used then it become part of a different bedroom circut (lets call this the "Master bedroom".
The only thing I would image this is that (as this was an older house) that for this Bedroom A... that whoever ran the electrical, just splice the neutral from "Master bedroom" to the "Bedroom A"
But I am interested in see what other think why using the Neutral wire in "Bedroom A" would cause that switch to become part of the "Master Bedroom" circuit..