By Home HVAC, Plumbing & Electrical · July 2, 2026 · 5 min read
The short answer
Your home may need an electrical panel upgrade if you still have a fuse box or 100-amp service, breakers trip often, lights flicker when large appliances run, the panel is warm or buzzing, or you're adding major loads like an EV charger, hot tub, or HVAC system. Modern homes typically need 200-amp service to run today's loads safely.
Signs your panel is outdated or overloaded
- Fuse box instead of breakers, or 100-amp service in a modern home.
- Frequent breaker trips under normal use.
- Flickering/dimming lights when the AC, dryer, or microwave kicks on.
- Warm, buzzing, or scorched panel.
- Relying on power strips because you're out of circuits.
- Adding big loads: EV charger, hot tub, addition, or new HVAC.
Why panel capacity matters
The panel is the hub that distributes power safely through your home. An undersized or aging panel can't keep up with modern demand, which leads to nuisance trips and, in worst cases, overheating. Certain older panel brands are known fire risks and should be evaluated. If breakers already trip regularly, start with why circuit breakers keep tripping.
How much capacity do I need?
Most modern homes run best on 200-amp service; larger homes or those with EV charging, electric heat, or heavy appliance loads may need more. A licensed electrician calculates your load to size it correctly—this isn't a guess.
What's involved in an upgrade?
A pro evaluates your current service, calculates load, coordinates any utility disconnect/reconnect, and installs a properly sized panel to code. It's a licensed, permitted job—not DIY.
Planning an EV charger or seeing warning signs? Learn about panel upgrades or call (660) 827-0101.
Need a pro to take it from here?
Serving Sedalia and Mid-Missouri since 1960 — with 24/7 emergency service when it can't wait.
Frequently asked questions
How do I know if I need a panel upgrade?
A fuse box or 100-amp service, frequent trips, flickering lights, a warm/buzzing panel, or adding big loads like an EV charger are common signs.
How many amps does a modern home need?
Most modern homes need 200-amp service; larger homes or those with EV charging may need more—confirmed by a load calculation.
Is upgrading an electrical panel a DIY job?
No—it's a licensed, permitted job involving the main service and should be done by a professional electrician.