My Electrical Panel Is Buzzing: Is That Dangerous?
From Solana Electrical, AZ ROC #341966
The short answer
A panel that buzzes loudly, crackles or sizzles should be checked soon. It can mean a loose connection, a breaker that is overloaded or failing, or arcing inside the panel, all of which make heat. If the buzzing comes with heat, a burning smell or scorch marks, call an electrician right away.
What can cause it
A loose wire or a loose breaker connection
A breaker that is overloaded or wearing out
Arcing between a breaker and the bus bar inside the panel
An older panel brand with known breaker problems
Call right away if
The panel door or a breaker is warm or hot
You smell burning or hot plastic
You see scorch marks or discoloration
The sound is crackling or popping, not a steady hum
Lights flicker or dim along with the sound
What you can safely do
Listen for which breaker the sound seems to come from. If you can reach the panel safely and there is no heat or smell, you may turn off that one breaker and see if the sound stops. Do not remove the inner cover, tighten anything or touch wires. Keep the area around the panel clear.
Talk to us
Call (602) 999-2770 at any hour and a real person answers. Tell us what you hear, see and smell. We will tell you honestly whether it needs someone now or can wait, and you will hear the price before anyone drives out.
If there is smoke or fire at the panel, leave the house and call 911. Do not try to shut off the panel.
Common questions
Is a faint hum from the panel normal?
Breakers are normally quiet. A faint hum may be minor, but any buzz you can hear across the room, or one that is new, is worth having checked.
Can a buzzing breaker start a fire?
It can. Buzzing often means a loose connection or arcing, and both make heat.
Should I turn off the main breaker?
Only if you can reach it safely and there is no smoke. If you see smoke or fire, leave and call 911.
