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Question DetailsAsked on 3/27/2014

I have a #12 wire terminated to a 30 amp breaker, Is this dangerous and ballpark how costly would it be to convert

A home inspection revealed that a #12 wire was termianted to a 30 amp breaker and that the wire felt loose. The recommendation was to change to a 20 amp breaker. It's a square D panel if that matters and the home is a very small cabin that will be used part time/seasonally. I am wondering if this needs to be an immediate fix and how costly it would be?

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Voted Best Answer

Yes this is dangerous and should be addressed as soon as possible as it could lead to a fire. Quick fix is to put the 20 amp breaker in. Probably minimun service charge by electrician of about $150 or so depending on travel time. It would be a fair amount more to increase the wire size and hard to say with out knowing how long the wire is and how hard it would be to fish it through the walls. My thoughts are that some one put the heavier breaker in for a temporary thing like using a pressure washer or something like that since you said it is a cabin and they usually don't have to many heavy loads unless it is the well. If it is the well you should think about a bigger wire but that would be best checked out by an electrician on site that could check the amperage of the pump.


Answered 6 years ago by ContractorDon


AS Contractor DON stated , YES it is dangerous to use , as these types of scenarios DO CREATE Fires as the wires can heat up and burn due to the fact that the breaker , which should be NO LARGER than a 20 Amp , is oversized for the #12 wire mandated for 20 Amps!

The 30 amp breaker should be installed on #10 wiring ONLY !

Regarding the potential costs , in Honesty ,it is unfair and too simplistic to offer a Cost scenario , as many things or matters affect the potential costs . Among those matters which can affect costs , difficulties in installing New wiring , Distance required for an electrician to travel , Permit and inspection costs , breaker and hardware costs required or needed for the new circuit ,repair costs needed for repairing damaged wall or ceiling cuts ,possible conduit costs (Hardware) and perhaps 2or 3 other items not visible to our eyes that only an On site electrician can observe !

Answered 6 years ago by BentheBuilder

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