Quote:
Originally Posted by rick-l
This is very common for 220 volt outlets like ACs, compressors etc. If you don't need the neutral you don't have to provide it.
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True, so long as there's nothing else in the unit that requires 120V, like a fan motor, controls, etc. I have no idea what heater he has, so if I were Randy, I'd replace the circuit with a four-wire one, since I'm going to have to do something. I'd rather have an extra wire than be short one, especially if down the road I might change the heater.
Plus, I can envision an idiot doing things with three wires that are better done with four, so I'd do a little digging to find out just what the previous idiot actually did. Given his brilliant DIY installation, I assume the worst. I'd be looking at the wiring connections inside the heater and inside the panel.
JR