two a/c units on same feeder circuit.

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ScottVesi

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Can someone refresh my memory on the formula used to determine the size of a circuit that feeds two air conditioners. The largest unit is a 3 ton. The 2nd unit is a 2 ton. Single phase 240 v
 
Take a look at 440.33

You would take the sum of the rated load or branch circuit selection current ratings, whichever is larger, of the two A/C units plus 25% of the highest motor-compressor rating of the group.

Chris
 
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