What should I do if my circuit breaker sparks when turned on?

If a circuit breaker sparks when you turn it on, turn it off immediately and do not try again. The most common cause is arcing from a loose connection, a failing breaker, or a shorted appliance on that circuit. A tiny, soft flash inside the breaker under heavy load can be normal, but loud pops, orange flashes, smoke, heat, or scorch marks signal danger. If you see smoke or hear crackling from the panel, shut off the main and step back. In the Nampa area, this often follows added space heaters or new outlets overloading older panels.

Take these steps now:

• Switch the breaker firmly to OFF and leave it off.
• Unplug or switch off devices on that circuit before any testing.
• If you smell burning or see smoke, shut off the main and call 911.
• Do not remove the panel cover or touch exposed wiring.

Have a licensed electrician inspect the breaker and wiring before using that circuit again.

Updated: 2026-04-25

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