Quote:
Originally Posted by Great68
That really depends on size & make/model of your unit.
My 3-ton used a 30A/240V 10-2 supply to the outdoor unit, and 14-3 power/control from the outdoor unit to the indoor unit.
A 4 or 5 ton might use a 40A/240V 8-2 to the outdoor unit. And some models might need the neutral, so then you'd need a 3 conductor.
You won't know what your exact requirements are until you select your unit.
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Seems like I could run 8-2 from the panel to outside and I'll be covered for whatever I end up with by changing the breaker to appropriate amps. Then for the electrical wires from outdoor unit to indoor unit would just run on the exterior walls with the refrigerant lines.