Ask Experts Questions for FREE Help !
Ask
    gregjaguar's Avatar
    gregjaguar Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 13, 2008, 05:48 AM
    Breaker keeps tripping
    I have a 40 amp double pole breaker in my main service panel which feeds a pony box in my attic. A window air conditioner is tripping the 40 amp breaker in the main panel before the 10 amp breaker in the pony box. The 10 amp breaker services two receptacles and one track light. The track light has 4, 50 watt halogens ( not on all the time ) and the receptacle that is not being used by the air conditioner is used rarely. If I use the air conditioner in a different receptacle (not connected to the 10 amp breaker), the 40 amp breaker does not trip. Why is the 40 amp tripping before the 10 amp breaker, and why would it not trip if I use a different receptacle?

    Thanks
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Sep 8, 2008, 06:28 PM
    This is most likely happening because one side of the feeder to the sub-panel is overloaded. When you move to a different receptacle it is probably on the other leg of the panel.

    Very little you can except try and balance the load better.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Breaker keeps tripping [ 24 Answers ]

I need to figure this out. I have two 15 amp space heaters in my garage and when I turn them both on it throws the breaker. The breaker at box for this is rated at 20amps. I have been told that I can run both on high and won't throw the breaker. I also replaced the old breaker with a new one (same...

Breaker for AC Tripping [ 3 Answers ]

I have a split system & Air Handler. Any idea why the breaker keeps tripping?

Breaker keeps tripping [ 1 Answers ]

We have recently purchesed a Vits spa from some one. When we did we replaced the heat element . It has worked well for the last 6 weeks but now it it tripping the breaker on the heater. Any suggestions.

New Can lights Tripping the breaker [ 4 Answers ]

I jumped the power for three 55w can/flush lights from an existing outlet. The outlet still works. The lights are wired in parallel and will work perfectly if wired without a switch. As soon as you put the switch in there and turn it on, it trips the breaker. I can't figure it out - I even...

Main breaker keeps tripping [ 4 Answers ]

We have a challenger 200 amp 240V main service panel. It was installed as new construction in nov. or dec. of 90'. The main breaker has started to trip off on occasion and we have to stumble around and get to the panel to reset it. I was told the breaker was discontinued a long time ago. What is a...

View more questions Search