I just got a nice big electric heater for the shop, and I had a quick (hopefully easy) question about hooking it up.
The instructions for the heater mention three wires, black, white, and green. My 220 circuit has 4: black, white, red, green. What do I do with the red one? Is it necessary?
Thanks!
The instructions for the heater mention three wires, black, white, and green. My 220 circuit has 4: black, white, red, green. What do I do with the red one? Is it necessary?
Thanks!
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