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Posted by Noon-Air on July 10, 2009, 7:01 pm
> Our house was built in 1964 and we purchased in 1997. According to the
> plans it has had central AC since it was built. But while adding a
> dedicated circuit for a built in microwave I noticed that there were only
> 2 240 circuits in the breaker box. 1 = Dryer 2 = Range. None for the AC.
> Then I noticed that one breaker was labeled Furnace (20A) and the one
> below it was labeled Air Conditioning (30A). Then I check at the
> compressor it has 240v and tripping either breaker it drops to 0v. Is
> there any reason this should be 2 separate 120v breakers? If I replace it
> with 1 breaker would it be a 20A or 30A? I haven't looked at the furnace
> yet as it's hard to get to (I'm assuming it's 240v also but it's natural
> gas so I suppose it could be 120v).
gas furnace will most likely be 120v on a single pole breaker, however
having 2 seperate single pole breakers for the A/C is not only a safety
hazard, but can also be a FIRE hazard.
GET IT FIXED ASAP!!!
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> plans it has had central AC since it was built. But while adding a
> dedicated circuit for a built in microwave I noticed that there were only
> 2 240 circuits in the breaker box. 1 = Dryer 2 = Range. None for the AC.
> Then I noticed that one breaker was labeled Furnace (20A) and the one
> below it was labeled Air Conditioning (30A). Then I check at the
> compressor it has 240v and tripping either breaker it drops to 0v. Is
> there any reason this should be 2 separate 120v breakers? If I replace it
> with 1 breaker would it be a 20A or 30A? I haven't looked at the furnace
> yet as it's hard to get to (I'm assuming it's 240v also but it's natural
> gas so I suppose it could be 120v).