Do You Need a 200 Amp Panel Upgrade? An Honest Checklist

Panel upgrades are one of the easiest things for a contractor to oversell. They are also one of the most necessary projects in a large share of Georgia's housing stock. Both things are true, which is why it is worth understanding the actual decision criteria before anyone hands you a quote.

Start with what you have

Open the panel door — the outer door with the directory, not the inner cover with the screws — and look for the main breaker's amperage. Common ratings are 60, 100, 125, 150 and 200 amps. If you find fuses instead of breakers, you are on a service that predates 1960s practice in most homes.

The clear cases for replacement

• A fuse box. No AFCI or GFCI capability, no room to grow, and the standing temptation to over-fuse a circuit. Insurers increasingly decline these.
• A panel brand with a documented failure history. Certain mid-century brands have well-established records of breakers that fail to trip under fault. If you have one, replacement is a safety project regardless of capacity.
• Visible damage inside the cabinet. Rust, water staining, scorch marks, melted insulation, or double-tapped breakers everywhere.
• A panel that is warm. A properly functioning panel under normal load should not be noticeably warm.
• No spaces left. If every slot is filled and half of them are tandem breakers stuffed in to buy space, you have no capacity for anything new.

The capacity question is separate

Here is the distinction people miss: replacing an old panel and increasing your service amperage are two different projects that often get done together. You can install a brand-new 100 amp panel if a load calculation shows 100 amps is genuinely enough. You can also leave a sound panel in place and add a sub panel for a new area.

A load calculation follows a defined method: square footage of the home, the fixed appliances, the largest of heating or cooling, and demand factors that account for the fact you do not run everything at once. Done properly it produces a number, and the number decides.

What actually pushes homes past 100 amps

In our experience across Georgia, the combinations that trigger a genuine upgrade are:

• Electric heat or a heat pump plus an electric range plus an electric water heater
• Adding a second HVAC system for an addition or a finished attic
• A Level 2 EV charger at 40 or 48 amps, especially two of them
• A workshop with a welder, compressor or dust collection
• A pool with a heat pump heater
• Solar with battery storage

A single EV charger on its own does not automatically require an upgrade. We routinely install 32 and 40 amp chargers on 100 and 150 amp services where the calculation allows, sometimes with a load management device that pauses charging when household demand peaks. That device costs a small fraction of a service upgrade.

What the work involves

Expect a permit, coordination with the utility to pull the meter, most of a working day without power, and an inspection. The scope frequently includes the meter base, the service mast or lateral, and the grounding electrode system, because current code requirements for those have changed since your original panel went in. A quote that covers only the panel box itself and treats the rest as extras is a quote worth questioning.

You should receive: a properly labeled circuit directory, current-code grounding and bonding, AFCI and GFCI protection where required, and signed inspection paperwork. That last item matters more than people expect at closing time.

If you want a straight answer about your own panel rather than a sales pitch, call (866) 651-5242 and we will look at it and run the calculation.