Replacing switches with new ones and wanting to add a zwave dual-relay while I'm at it. It's a 3 gang box and all are on the same circuit. I have an electronics background, but no electrical experience beyond replacing switches and a couple fixtures. I understand the theory but definitely don't know if this is to code. My brief googling is telling me that it should be switched hot for safety reasons.
The house was built in 1922, but it was remodeled in mid-2000 with upgraded wiring. One of the switches controls the living room light and an outlet. However, I discovered the outlet is not grounded when I took it off, so I guess not ALL the wiring were replaced.
Here are pictures of the gang box.
Best Answer
You are right to be concerned about switched neutrals. A dangerous situation.
You can test it by using a non-contact tester similar to this one
Turn on the breaker (after making sure no terminals are touching anything metal). Check the wires going to each of the switches. If wired correctly, one of each should be hot. If they are not, you have a switched neutral.
Hot should be labled black, red or blue. White wires are often used for hot on switch loops, but they are supposed to be labeld black with marker, paint or tape.
If you do find a switched neutral, you need to rewire the circuits. This may be a time to call in a pro.