I had an electrician come out to replace my breaker box because the breakers were getting hard to find and making noise. House was built in the 1990's and has a few 240v circuits for the water heater, well pump, and heat pump. Romex wiring throughout. It looks like the existing 240v circuits used the white and black wires as the hots. Unfortunately, the electrician accidentally swapped one of the 240v white wires for a white neutral on a 120v circuit and fried a bunch of expensive components in the house, $2000+ damage.
My question is, whats the standard of practice of making a white wire hot on a 240v circuit? Is it allowed? Does it need to be marked somehow? I thought only red and black wires were supposed to be hots. Do I need to cut my electrician any slack?
My question is, whats the standard of practice of making a white wire hot on a 240v circuit? Is it allowed? Does it need to be marked somehow? I thought only red and black wires were supposed to be hots. Do I need to cut my electrician any slack?