Breaker Trips When Appliance Turns On
If a breaker trips when one appliance starts, the circuit may be overloaded, the appliance may be faulty, or the circuit may already be close to its limit.
Quick summary
A breaker that trips only when one appliance turns on often gives you a useful clue. The issue may be that the appliance draws too much current, the circuit is already heavily loaded, or the appliance has an internal fault. The key is figuring out whether the problem follows that appliance or the circuit in general.
Common causes
The appliance may draw more current than the circuit can safely support, especially at startup.
Other loads may already be using most of the circuit capacity before the appliance turns on.
The appliance may have an internal fault that trips the breaker as soon as it starts.
A weak or worn breaker may be tripping sooner than it should under normal use.
Safe checks homeowners can do
Turn off or unplug other items on the same circuit and test the appliance again.
Try the appliance on another suitable circuit if the manufacturer allows and it is safe to do so.
Notice whether the breaker trips only with that appliance or with any heavy load on the circuit.
Check the appliance cord and plug for heat, damage, or signs of wear before using it again.
When to stop and call an electrician
- Stop if the appliance causes a trip on more than one circuit or shows signs of heat or burning smell.
- Stop if the breaker trips even with most other loads removed from the circuit.
- Call a licensed electrician if you cannot tell whether the problem is the appliance, the breaker, or the circuit wiring.