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40 amp

  1. Electrical
    I'm installing a 240V 40A electric garage heater. I expected to wire 2 hot (blk/red), neutral (wht) and ground (grn) but the heater only has 3 lugs. The ground lug's wire hole is much smaller than the hot lugs. Is this a pure 240V install where both neutral and ground are not needed? If so is...