As of last week our house is all natural gas (shop is still in-process, but that's another story.) One thing we planned for is getting a gas stove eventually so we now have the gas hookup behind the stove. Since gas stoves still need power for the electronics, what's a good approach to switching? I haven't pulled it out to check, but I'm assuming that by 1991 when our house was built the range receptacle was 4-wire. Is it as simple as buying a plug-in adapter that just uses one leg? Or should I replace the breaker and receptacle with 20A 120V parts and just abandon the unused leg? If I do that, what's the proper method of marking the abandoned leg, or should I cut it off right where it enters the boxes?