NEMA 14‑50 vs 6‑50 for EV Charging: Which Outlet Should You Install?

Both NEMA 14‑50 and 6‑50 are common 240‑volt outlets for Level 2 charging. The 14‑50 includes a neutral conductor; the 6‑50 does not. Here’s how to decide which fits your garage and charger.

Quick differences

NEMA 14‑50: two hots + neutral + ground (4‑wire).
NEMA 6‑50: two hots + ground (3‑wire), commonly used for welders.
Most EVSEs don’t need neutral—but some accessories or multi‑use circuits might.

Simple front diagram of a NEMA 6‑50R receptacle — If your EVSE is 6‑50 plug‑in, you don’t need a neutral conductor.

Panel & breaker sizing

Most 40A continuous EVSEs specify a 50A breaker. Use appropriately sized copper conductors and a properly rated receptacle/enclosure. Follow manufacturer instructions and local code.

When to pick each

Choose 14‑50 if you want flexibility for appliances or future devices that require neutral.
Choose 6‑50 if your EVSE plug is 6‑50 and you want a simpler 3‑wire run.
Consider hardwiring for highest reliability in harsher or outdoor locations.

Safety first: use a listed receptacle, torque terminations to spec, and avoid cheater adapters that can overheat.

Frequently Asked Questions

Q: Do I need GFCI for a garage outlet?

A: Many jurisdictions require it—check your local code and EVSE manual.

Q: Will a 14‑50 charge faster than a 6‑50?

A: No—the speed depends on the EVSE amperage and your vehicle’s onboard charger.