I am In Ontario Canada. I am doing a renovation and I came to a switch box for my hallway that has two three way switches that operate two diffent lights. One at the top of the stairs and one at the bottom. There is also a regular switch for an out side light.
When I opened the box I noticed that the power in for the outside light and the downstairs 3way comes from one cicuit breaker and the upstairs 3way comes from another circuit breaker.
The power for the upstairs light comes into the upstairs 3way switch and down to midfloor gang switch so I cannot easily convert the switches to all be powered from the mani switch box.(Picture 1). What I want to know if this is ok to do. I have seen it done in to ganged switch boxes in the house. I am doing other work and will be getting an electrical inspection so want to make sure it is proper. Thanks in advance. I noticed that it does not meet current code re the nuetral, but the house is 35 yrs old so that part was code back then so I dont think I have to change or rewire the whole house.