A power cord that is hot to the touch is not a common problem. Either the AC unit is drawing more amps that it is supposed to (indicating it requires servicing) or the power cord is not sized correctly. There are charts available on the Internet that will tell you what gauge wires you should have based on length and amps.
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Jon & Chris Everton
1986 40' Dog House #86
0 hp 8V92 Allison HT740
Soon to be 500hp ISM with ZF 6 Speed
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