A NEMA 6-50 outlet is a 240-volt, 50-amp outlet used for equipment that needs 240 volts, most commonly welders and EV charging, as well as some other heavy tools and appliances. It supplies 240 volts using two hot wires and a ground, without a neutral, which is what distinguishes it from a 14-50 outlet. Understanding what a 6-50 is used for helps you know whether it fits your equipment, such as an EV charger.

Here is what to know about what a NEMA 6-50 outlet is used for.

A 240-volt outlet

A NEMA 6-50 is a 240-volt outlet rated for 50 amps. It delivers 240 volts, the higher voltage used by heavy equipment, rather than the 120 volts of a standard household outlet. This makes it suitable for equipment that requires 240 volts to run, which is why it is used for welders, EV charging, and similar loads. The 240-volt supply is the defining feature of the 6-50.

Common uses: welders and EV charging

The 6-50 outlet is commonly used for:

• Welders, which is a traditional and common use for the 6-50
• EV charging, since many Level 2 chargers can use a 6-50 outlet
• Other 240-volt equipment and tools that are rated for it

So if you have a welder or want a plug-in Level 2 EV charger, a 6-50 is one of the outlets that may be used. It is a versatile 240-volt outlet for heavy equipment.

Two hots and a ground, no neutral

What distinguishes a 6-50 from a 14-50 is its wiring: a 6-50 uses two hot wires and a ground, with no neutral, while a 14-50 adds a neutral. The 6-50 provides 240 volts only, which is all that equipment like a welder or an EV charger needs, since they run on 240 volts. The 14-50, with its neutral, can also provide 120 volts (useful for things like an RV), as covered in our article comparing the 14-50 and 6-50 outlets. For EV charging, both can work; the charger uses the 240 volts either way.

For EV charging

For EV charging specifically, a 6-50 outlet is a valid option for a plug-in Level 2 charger, as long as the charger is designed to use a 6-50 plug (or you use the appropriate plug configuration). The charger draws 240 volts from the outlet to charge faster than a standard 120-volt outlet. Whether a 6-50 or a 14-50 is used depends on the charger and the installation, and a licensed electrician installs the correct outlet on a properly sized circuit.

Installed on a proper circuit

Like any 240-volt, 50-amp outlet, a 6-50 must be installed on a properly sized and protected circuit by a licensed electrician, with the correct wire, breaker, and grounding. Because it is a high-power outlet, correct installation is essential for safety. An electrician installs the 6-50 on a dedicated circuit suited to the equipment it will serve, whether a welder, an EV charger, or other 240-volt equipment.

A NEMA 6-50 is a 240-volt, 50-amp outlet used for welders, EV charging, and other 240-volt equipment. It supplies 240 volts using two hots and a ground, without a neutral, which distinguishes it from a 14-50 (which adds a neutral and can also supply 120 volts). For EV charging, a 6-50 works with a charger designed to use it. A licensed electrician installs it on a properly sized, dedicated circuit.

Stella Electric installs NEMA 6-50 and other 240-volt outlets for welders, EV charging, and equipment for homeowners across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. If you need a 240-volt outlet, we can install it. Financing is available on qualifying projects.