Signs Your Electrical Panel Needs Upgrading
Breakers that trip often, a panel with no room for new circuits, or a home still on 100-amp or 60-amp service are the most common reasons to upgrade. Here is how to tell what you have and when it matters.
Signs to watch for
Breakers trip when several appliances run at once. Lights dim when the AC or dryer starts. The panel is warm, buzzes or smells like burning. There are no open slots for new circuits. The panel is a brand or model with a known safety history, or it uses fuses. You are adding an EV charger, heat pump, hot tub or electric range.
What size service do you have?
The main breaker at the top of the panel shows the amperage: commonly 100, 150 or 200 amps. Older homes may have 60-amp service. A 200-amp panel suits most modern homes with electric appliances or an EV charger.
| Item | Guidance | Notes |
|---|---|---|
| 60-amp service | Upgrade | Too small for modern loads |
| 100-amp service | Often upgrade | Depends on loads; a load calculation decides |
| 150-amp service | Usually fine | May need a subpanel for new circuits |
| 200-amp service | Fine for most homes | Consider 400 amps only for very large loads |
What an upgrade costs
Upgrading to 200-amp service runs about $1,900 to $4,500 installed, plus more if the meter base or service entrance must be replaced. Adding a subpanel for extra circuits without changing service size runs about $800 to $3,000.
Alternatives to a full upgrade
A load management device can let an EV charger share capacity on a 100-amp panel. A subpanel adds circuit slots without a service change. An electrician's load calculation shows whether either option is enough.
Common questions
Do I need 200 amps?
Most homes with electric heating, EV charging or large appliances do. An electrician can do a load calculation to confirm.
Is a 100-amp panel safe?
If it is in good condition and not overloaded, yes. Capacity, not age alone, is the issue.
Can I upgrade my panel myself?
Panel and service work requires a licensed electrician and a permit in most areas, and the utility must be involved.