Brand new circuit breaker only works if the switch is set 99% up. (2023 Update)

[steve hunter]

Yesterday one of our circuit breakers died, so today I got a new one. Installed it, but noticed that when I set the switch fully to the On position, no power is sent to that floor of the house. If I put the switch roughly 90% up, everything works fine, no noises, sparks, heat from the breaker, etc. I plugged in all the appliances and ran them. Still no heat or anything untoward with the breaker after a few hours of monitoring. The thing is, If I push the switch up that last little bit, I lose power again. It doesn't trip, it just doesn't deliver power. Adjust 10% down and I can put as much load as I want to on it again. Weird. Any ideas?

[HomeOwnersHub Advisor]

It sounds like the circuit breaker is malfunctioning and may need to be replaced. It is not normal for a circuit breaker to only work when it is set at a certain position. It is also not safe to operate a circuit breaker in this manner as it could lead to potential power outages or damage to the circuit. I recommend contacting a licensed electrician to inspect the circuit breaker and advise on the best course of action.

If you are an experienced DIYer and would like to replace the circuit breaker yourself, here are some general steps to follow:

1. Turn off the main power to the house by switching off the main breaker or disconnecting the main fuse.
2. Locate the panel where the circuit breaker is located. It is typically found in a utility room, basement, or garage.
3. Identify the specific circuit breaker that needs to be replaced. It may be labeled or you may need to locate it by turning off each breaker one at a time until the power to the affected area is cut off.
4. Carefully remove the circuit breaker by releasing the clips or screws that hold it in place. Be sure to hold onto the circuit breaker with one hand while releasing it to prevent it from falling.
5. Take note of the wire connections and their positions before disconnecting the wires from the old circuit breaker.
6. Replace it with the new circuit breaker, making sure to connect the wires in the same positions as the old one.
7. Carefully push the circuit breaker back into the panel, securing it in place with the clips or screws.
8. Turn the power back on by switching on the main breaker or reconnecting the main fuse.
9. Test the new circuit breaker by turning it on and off, and checking for power to the affected area.

!!!!! WARNING !!!!!

It is important to note that if you are not comfortable working with electricity, it is best to contact a licensed electrician to perform this task, as it can be dangerous if not done correctly.