What size wire for a 230 volt 20 amp breaker?

[Jadnashua]

Old a/c units, like old refrigerators, can continue to work for a long time, but that does not mean new ones aren't often VERY much more efficient. As energy use goes up, the cost to keep these old things around becomes somewhat counter-productive.

 

[Ballvalve]

Old a/c units, like old refrigerators, can continue to work for a long time, but that does not mean new ones aren't often VERY much more efficient. As energy use goes up, the cost to keep these old things around becomes somewhat counter-productive.

Maybe those extra amps after 40+ years is far more energy efficient than the Chinese and Mexican crapola units with the aluminum condensers that are fan cooled and buried underneath, [refrigerators] filled to the brim with dog hair and fuzz balls that no human in the USA ever thinks to clean with some non existent tool. I have a 55 year old Fridgidare with a beautiful full back copper coil - no hair balls- that you still can't hear running, and no dent in the meter. A new door gasket would be nice.

First thing I did with my chest freezers was to bypass the thermostats and let them run full time. I get -30' F and my meat is good after 7 years. Compressors last longer too - the CSV of freezers.