Here's what I want to do.
I've got steam/boiler heater, runs on gas, the only electricty needed is to run the (solenoid?) thermostat, basically.
It's powered via a cable (covered in flexible metal tubing) that connects into the wall 110-AC line.
What I want to do is get that changed from that direct connection to the wall, to instead end in a grounded male plug.
That's it!
Probably requiring another separate female socket box to plug it into.
WHY? So that when the power goes out and I get my small generator cranked up, I can unplug the heating apparatus (boiler, etc) from the wall and plug it into an extension cord from the generator. So I don't freeze my ass.