My new house is done being built and I am going to come in and install my new gas range and dishwasher, both 120V 15A appliances.
I got thoroughly confused looking at the breaker box because gas range and dishwasher were labeled on different circuits but at the breaker the electrician installed a double pole breaker. I traced the two ungrounded conductors to two separate wires coming out of the box, telling me it is really two separate circuits(EDIT: On second thought I did see a red wire in the one end so I must not have traced that right. It probably is going to one 14/3 cable now that I think about it).
Clearly if the gas range or the dishwasher were to trip the breaker then it immediately trip the other circuit as well. I am curious why it was done this way.
Is this a new NEC code that I am unaware of? Could this be a regional code of some kind? Are there any safety concerns for why the electrician decided to do this over using two separate 15A breakers?