This adapter is commonly known as a PTAC or Hotel Adapter. The male end (NEMA 6-20) plugs into the 220V AC/Heater outlet and the twist lock female end (NEMA L14-30) plugs into the power box or can be used with the 25′ extension cord. When using this adapter the power box input is 20Amps/220Volts and the output is 32Amps/110Volts.
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