Connecting the neutral wire through a switch would be extremely dangerous and should never be done. Here's why:
The neutral wire in an electrical circuit is meant to provide the return path for the current after it has passed through the load (appliances, lights, etc.). It is not meant to be switched or interrupted.
If the neutral wire is connected through a switch, it can create several hazardous situations:
Shock hazard: With the neutral wire interrupted, the metal enclosures of electrical devices and appliances could become energized, creating a serious shock hazard for anyone touching them.
Fire hazard: The interrupted neutral can cause voltage potential differences, leading to overheating and possible electrical fires.
Equipment damage: The voltage fluctuations and imbalances caused by an interrupted neutral can damage sensitive electronic equipment and appliances.
Electrical code violation: Connecting the neutral wire through a switch is a direct violation of electrical codes and regulations, which are in place for safety reasons.
The neutral wire should always be connected directly to the neutral bus bar in the electrical panel and should never be switched or interrupted. Any switching or control of a circuit should be done by switching the hot (live) wire, while keeping the neutral wire continuous and uninterrupted.
Attempting
to connect the neutral wire through a switch is extremely hazardous and can
result in serious injury, property damage, or even loss of life. It should be
avoided at all costs, and if you suspect any issues with your electrical
wiring, it's best to consult a qualified electrician.
