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Old 03-12-2015, 01:10 PM   #1
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2008 23' Safari SE
Columbus , Ohio
Join Date: Apr 2012
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main breaker

some times when using a/c or heat pump main breaker kicks off .
using 30 amp from main house connected to 30 amp box 300 feet away.
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Old 03-12-2015, 01:21 PM   #2
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2014 27' FB Eddie Bauer
Chelsea , Michigan
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300 feet is a long way for a 30 amp circuit. Did it used to work with the AC or is this a new phenomena?

If it used to work fine and this issue is new, then I would suspect that your compressor may be drawing too much power when it fires up. Could be any number of issues that will require a trip to an AC technician.

If this circuit is new and you've never used it successfully before with the AC, then I would suspect that the run may be too long for the wire size and you are getting a lot of power loss. You can have an electrician check the circuit to make sure it capable of providing the rated power.
Bob Martel
WBCCI# 5766
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