Insulation done! Shop heater questions. Electrical gurus.

Any electric heater I've ever seen is dedicated to a voltage, 110 or 220, any space heater, unit heater, PTAC, Heat pump, or electric furnace. As long as the amp rating of the wire is not lower than the breaker, you'll be ok. The wire size is the key factor. By the way, I'm a HVACR contractor for 10 years, in the trade for 25.