Hi, i have 2 3ton AC units, the breaker boxes just say "AC." and "AC". I'm having a generator installed/transfer panel and need to select a specific AC--is there a way to tell which breaker goes to which ac? I seem to recall that i shouldn't turn on the AC unit if the temp is under 60. Is this true? If i could (it is 40ish now) that would be easy, just turn it on for a few seconds and flip the breakers one by one.