A breaker panel should be silent. If yours is buzzing, humming, crackling or making an intermittent frying sound, that is not normal and it is not something to monitor for a few weeks.
What the sound usually is
- A loose connection arcing. Electricity jumping a small gap makes a buzz or crackle and a great deal of localised heat. This is the most common cause and the most dangerous.
- A failing breaker. Internal contacts wearing out. A single breaker that buzzes when a specific circuit is under load usually means that breaker is done.
- An overloaded circuit. A breaker running near its limit for long periods can hum audibly before it trips.
- A loose bus connection. Where the breaker clips onto the panel bus bar. Common in older panels and in a few brands with known design problems.
- Ordinary transformer hum. Not everything is a fault. A doorbell transformer or a low-voltage supply mounted on or near the panel can hum harmlessly. An electrician can tell the difference in a couple of minutes.
How urgent is it
Treat it as urgent if any of these apply:
- The panel cover is warm or hot to the touch
- You can smell burning plastic or an acrid, ozone-like odour
- The sound is crackling or frying rather than a steady hum
- You see any scorching, discolouration or melted plastic around a breaker
- Lights flicker at the same time as the buzzing
Any of those, shut off the main if you can do it safely and call us. If you see smoke or sparks, call 911 first.
What not to do
Do not open the panel cover. The conductors feeding the main are live even with every breaker off, and there is no safe way for a homeowner to inspect the part that is usually at fault.
Do not simply replace the buzzing breaker. If the bus connection underneath it has overheated, a new breaker on a damaged bus stab will fail the same way, and the panel may not be salvageable by then.
Older panels and known problem brands
New Jersey has a lot of housing stock from the 1950s through 1970s, and some panels from that era have documented failure histories, including breakers that do not reliably trip under fault conditions. If your panel is one of these, a buzz is not something to live with. Insurers increasingly ask about it too, and some will not write a policy until it is replaced.
We will tell you what you have, whether it is a repair or a replacement, and what each one costs before any work starts.
What it costs
A diagnostic visit starts at $225, which covers the trip and the first hour of labor, including small fixes finished on the spot. Additional time is $125 per hour. If the repair turns into something larger, we price it before we do it.
Who to call
Voltus Energy Solutions is a licensed and insured New Jersey electrical contractor based in Montclair, NJ license #34EI01906000. A licensed electrician handles your job start to finish, and we answer the phone at (973) 382-9995 around the clock.
We serve homeowners across Essex, Union, Passaic and Morris counties, including Montclair, Glen Ridge, Bloomfield, Belleville, Nutley, Verona, Cedar Grove, West Orange, Orange, South Orange, Maplewood, Livingston, Caldwell, Millburn, Short Hills and Springfield.