how to connect 4 wire into 3 wire existing box. L1 and L2 connect to the black and red. White connects to White. Green connects to the electrical box if it is made of steel and is grounded. Otherwise ...
...NEC....but implies that some local Codes may permit the suggested connection...and it may indeed be permitted - if the unit actually draws straight 240 and does not require a neutral for 120 volts ...
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