If you have a 110/120 volt electrical supply, rated at 20 amps, and the AC you install is rated for 110/120 volts, and a 15 amp current draw, its not going to damage the AC, as long as the electrical supply is stable. If you are connect via pedestal to 30 amp, and you add another 15 amp draw, you are at a max of 45 amps, still under the 50 amp rating of the pedestal, so in my mind it should be no problem. I'm looking to add a second AC too, so somewhat thinking it out on keyboard.
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