As more homeowners across Cumming and the North Atlanta suburbs add an electric vehicle to the driveway, one of the most common questions we hear is whether a standard garage outlet is good enough to charge it. Usually, it isn’t — at least not efficiently. Here’s what’s actually involved in doing it right.
Level 1 vs. Level 2 Charging
Most EVs come with a Level 1 charging cable that plugs into a standard 120-volt household outlet. It works, but it’s slow — often adding only a handful of miles of range per hour. A Level 2 charger runs on a dedicated 240-volt circuit, similar to what an electric dryer or range uses, and can cut charging time dramatically. For most homeowners who drive daily, Level 2 is what makes home charging actually convenient.
Why a Dedicated Circuit Matters
A Level 2 charger needs its own dedicated circuit sized correctly for the charger’s amperage, run directly from the panel. This isn’t something to improvise with an extension cord or a shared circuit — it’s a continuous, high-draw load running for hours at a time, and it needs to be installed to code to be both safe and reliable.
Panel Capacity Is the First Thing to Check
Before a charger goes in, the panel needs enough available capacity to support it alongside everything else in the home. This is especially worth checking in older homes where the panel may already be running close to its limit. In some cases, a panel upgrade needs to happen first — better to know that up front than after the charger’s already been ordered.
Placement and Permitting
Where the charger goes matters too — cable length, garage layout, and future parking needs are all worth thinking through before installation day. Like most electrical work, a home EV charger installation typically requires a permit and inspection, which protects you as the homeowner and confirms the work meets current code.
Getting It Installed Right
Coal Mountain Electrical installs home EV charging stations throughout Cumming, Alpharetta, and the surrounding area, starting with an assessment of your panel’s capacity so there are no surprises. Contact us or call 404-424-2131 to talk through your setup.
