Panel Upgrades for EV Charging in Georgia
A panel upgrade is one of the most consequential electrical decisions in any EV charging installation project. This page covers the technical and regulatory dimensions of electrical service panel upgrades in Georgia, including when an upgrade is required, how the process works, and how residential and commercial scenarios differ. Understanding panel capacity is foundational to any compliant EV charging installation in the state.
Definition and scope
An electrical service panel — also called a load center or breaker panel — is the distribution point between the utility supply and all branch circuits in a building. Panel capacity is measured in amperes; standard residential panels in older Georgia homes are rated at 100A, while newer construction commonly installs 200A panels. EV chargers, particularly Level 2 units operating at 240V, draw between 16A and 80A continuously, which frequently exceeds the available spare capacity of a 100A panel.
A panel upgrade replaces or supplements the existing load center with one of greater ampacity. The scope of this page covers upgrades performed at single-family residential properties, multifamily units, and light commercial facilities within Georgia. It does not address utility-side infrastructure, high-voltage transmission equipment, or installations governed exclusively by federal facilities law. Adjacent topics such as dedicated circuit requirements and breaker sizing methodology are treated separately.
Georgia's electrical installations are governed by the Georgia State Minimum Standard Electrical Code, which adopts the National Electrical Code (NEC) with state amendments. The Georgia Secretary of State's Office licenses electrical contractors, and the Georgia Department of Community Affairs (DCA) administers the adoption of construction codes statewide. Local authorities having jurisdiction (AHJs) — typically county or municipal building departments — enforce these standards and issue permits.
How it works
A panel upgrade follows a structured sequence that moves from assessment through permitting to physical installation and final inspection.
- Load calculation — A licensed electrician performs a load calculation per NEC Article 220 to determine existing demand versus available capacity. For EV charging, NEC Article 625 applies. The Georgia EV charger load calculation process quantifies the additional ampacity the charger requires.
- Utility coordination — Georgia Power or the applicable Electric Membership Corporation (EMC) must be notified before service entrance upgrades because the upgrade may require a new meter base, larger service entrance conductors, or a rescheduled utility reconnection. The Georgia Power utility EV charger interconnection process governs this coordination.
- Permit application — The electrical contractor submits a permit application to the local AHJ. Georgia law generally requires a licensed electrical contractor to pull permits for service upgrades; homeowner-pulled permits vary by county.
- Physical replacement — The utility de-energizes the meter. The contractor removes the old panel, installs the new load center (typically upgrading from 100A to 200A, or from 200A to 400A service), replaces the service entrance cable if required, and wires new breakers.
- Inspection — The local AHJ inspects the completed installation. NEC 230.71 limits the number of disconnecting means, and NEC 225 governs outside branch circuits — both relevant to multi-panel configurations.
- Utility reconnection — After the inspection passes, the utility restores service.
For a broader view of how Georgia's electrical systems are structured, see how Georgia electrical systems work.
Common scenarios
Scenario 1: 100A to 200A residential upgrade
The most common scenario involves a pre-1990s Georgia home with a 100A panel adding a Level 2 charger at 48A. The existing panel has insufficient headroom after accounting for HVAC, electric ranges, water heaters, and other loads. The solution is a full panel replacement to 200A service with a new meter base and service entrance conductors sized at 2/0 AWG aluminum or equivalent copper per NEC Table 310.12.
Scenario 2: 200A panel with load management
A 200A panel may have adequate rated capacity but insufficient available capacity after existing loads are summed. In this case, a smart load management device — sometimes called an energy management system — can defer charger output during peak demand rather than requiring a full panel replacement. The smart EV charger electrical integration page covers this option in detail.
Scenario 3: Commercial facility adding multiple chargers
A small commercial property installing 4 Level 2 chargers at 40A each (160A aggregate) will typically require a service upgrade to 400A three-phase or the addition of a sub-panel fed from an existing 400A main. Three-phase power for EV charging applies in these cases.
Scenario 4: Multifamily retrofit
Multifamily buildings face unique panel constraints because individual unit panels are fed from a common service. Multi-unit dwelling EV charging electrical infrastructure guidance addresses how panel capacity is allocated across tenants.
Decision boundaries
The choice between upgrading a panel, adding a sub-panel, or deploying load management hinges on three variables: existing panel capacity, projected EV load, and budget constraints.
| Existing Panel | EV Charger Load | Recommended Path |
|---|---|---|
| 100A, <20A spare | 32A–48A Level 2 | Full upgrade to 200A |
| 200A, 40–60A spare | 32A Level 2 | Dedicated circuit, no upgrade |
| 200A, <20A spare | 48A+ Level 2 | Load management or sub-panel |
| 200A | 4+ chargers | Sub-panel or 400A upgrade |
Georgia's regulatory context — including which code cycles have been adopted and how local AHJs apply amendments — shapes which options pass inspection. The regulatory context for Georgia electrical systems page details the current code adoption status.
Safety classifications under NEC Article 625 require GFCI protection for all EV charging outlets, ground fault protection for personnel, and proper bonding per NEC Article 250. Panel upgrades trigger full compliance review of the service entrance, grounding electrode system, and bonding conductors — not just the panel itself. For a full framing of safety risk categories, the safety context and risk boundaries resource applies.
A scope limitation applies to this page: the guidance here reflects Georgia's state-adopted electrical code framework and does not constitute legal advice, engineering certification, or a substitute for review by a licensed Georgia electrical contractor or the local AHJ. Installations in federally owned facilities, Native American trust lands, or properties governed by federal lease agreements may fall under separate federal electrical authority outside Georgia's DCA jurisdiction.
For a complete entry point into Georgia EV charger electrical topics, the site index provides navigation to all related technical pages.
References
- National Electrical Code (NFPA 70) — NFPA, including Article 220 (load calculations), Article 225, Article 230, Article 250 (grounding and bonding), and Article 625 (EV charging systems)
- Georgia Department of Community Affairs — State Construction Codes — administers adoption of the Georgia State Minimum Standard Electrical Code
- Georgia Secretary of State — Electrical Contractors Licensing — licensing requirements for electrical contractors performing permitted work in Georgia
- Georgia Power — Electric Service Requirements — utility requirements for service entrance upgrades and meter base specifications