50A Extension Cords | McMaster-Carr

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44 Products

About Industry Designation for Cable Insulation

About NEMA Straight-Blade Plugs, Connectors, and Receptacles

About NEMA Plugs, Sockets, and Receptacles

About Extension Cords

90° Elbow Plug with Handle × Socket

NEMA 14-50 Plug

NEMA 14-50 Socket

Thick insulation protects the internal wires of these cords, so they can be used in high-traffic areas and over rough surfaces. The industry designation is STW, so the insulation resists water.

Cords with a NEMA 14-50 plug and socket have a high current rating and are often used to power electric vehicles. The light on their socket illuminates when the cord has power. Their plug and socket have handles, making them easy to grip when plugging or unplugging them.

Cords with a 90° elbow plug fit flush against a wall outlet, so they fit behind machinery or in areas where space is tight.

For technical drawings and 3-D models, click on a part number.

					Cord
Wire Ga.	Current, A	Voltage	Power-Indicating Light	Features	OD	Insulation Material	Industry Designation	Specifications Met	Color		Each
90° Elbow NEMA 14-50 Plug × NEMA 14-50 Socket
15 ft.
8, 6	50	125V AC/250V AC	With Power-Indicating Light	Handle	1.08"	PVC Plastic	STW	UL Listed, C-UL Listed	Black	00000000	0000000
30 ft.
8, 6	50	125V AC/250V AC	With Power-Indicating Light	Handle	1.08"	PVC Plastic	STW	UL Listed, C-UL Listed	Black	00000000	000000
50 ft.
8, 6	50	125V AC/250V AC	With Power-Indicating Light	Handle	1.08"	PVC Plastic	STW	UL Listed, C-UL Listed	Black	00000000	000000

Extension Cords for Welding

NEMA 6-50 Plug

NEMA 6-50 Socket

Run power to welders in machine shops, garages, and other areas where these cords will be exposed to harsh conditions. These cords have either EPDM or PVC insulation that protects the cord's wires from weld slag and being dragged, kicked, and stepped on. Their insulation also won't crack or become brittle when exposed to oil, water, and weather. They also stay flexible across a wide range of temperatures. A power-indicating light on the socket illuminates when the cord has power.

NEMA 6-50 cords can be used with higher voltage equipment than NEMA 5-15 cords. Use them with portable MIG welders rated up to 400 amps as well as TIG welders, stick welders, and plasma cutters rated up to 250V AC. They have a light that illuminates when they’re grounded safely. A handle makes them easy to plug in and unplug.

				Cord
Wire Gauge	Current, A	Voltage	Power-Indicating Light	OD	Insulation Material	Industry Designation	Specifications Met	Features	Color		Each
NEMA 6-50 Plug × NEMA 6-50 Socket
25 ft.
8	50	250V AC	With Power-Indicating Light	0.85"	PVC Plastic	STW	ETL Listed, C-ETL Listed	Ground-Indicating Light, Handle	Black	0000000	0000000
50 ft.
8	50	250V AC	With Power-Indicating Light	0.85"	PVC Plastic	STW	ETL Listed, C-ETL Listed	Ground-Indicating Light, Handle	Black	0000000	000000

Extension Cord Adapters

90° Plug × 90° Socket with Handle

Plug × Socket × Socket

NEMA 5-20 Socket

NEMA 14-50 Plug

NEMA 5-15 Socket

NEMA 6-50 Socket

Change the connection style between an outlet and your equipment.

NEMA 14-30 and NEMA 14-50 adapters are commonly used to charge electric vehicles.

Adapters with a 90° elbow plug sit flush against wall outlets to fit in tight spaces.

Adapters with a power-indicating light have a light on the socket that illuminates when the adapter has power.

Adapters with a handle make it easy to pull plugs out of sockets.

STW and SJTW adapters have a water-resistant outer insulation. STOW and SJTOW adapters have an oil- and water-resistant outer insulation.

For technical drawings and 3-D models, click on a part number.

						Cord
Lg.	Wire Gauge	Current, A	Voltage	Power-Indicating Light	Features	OD	Insulation Material	Industry Designation	Color		Each
NEMA 14-50 Plug × NEMA 5-15/NEMA 5-20 Socket
3 ft.	10	50	125V AC/250V AC	With Power-Indicating Light	__	0.67"	PVC Plastic	STOW	Yellow	0000000	000000
90° Elbow NEMA 14-50 Plug × 90° Elbow NEMA 6-50 Socket (with Handle)
1 1/2 ft.	6	50	125V AC/250V AC	Without Power-Indicating Light	Handle	0.85"	PVC Plastic	STW	Yellow	0000000	00000

Power Cords

90° Elbow Plug × Wire Leads

90° Elbow Plug × Spade Terminals

NEMA 10-50 Plug

NEMA 14-50 Plug

Connect equipment and devices to a power supply.

Cords with a NEMA 14-30 or 14-50 plug are often used to power electric vehicles. They have a high current rating.

Cords with a 90° elbow plug fit flush against a wall outlet, so they fit behind machinery or in areas where space is tight.

The insulation on STW and SJTW cords resists water. SRDT cords are for use with high-current equipment, such as ranges and dryers.

				Cord
Wire Gauge	Current, A	Voltage	Lg., ft.	OD	Wd.	Insulation Material	Industry Designation	Temp. Range, °F	Specifications Met	Color		Each
90° Elbow NEMA 10-50 Plug × Spade Terminals
8, 6	50	125V AC/250V AC	4	__	1.03"	PVC Plastic	SRDT	0° to 140°	UL Listed	Gray	000000000	000000
8, 6	50	125V AC/250V AC	6	__	1.03"	PVC Plastic	SRDT	0° to 140°	UL Listed	Gray	00000000	00000
90° Elbow NEMA 14-50 Plug × Wire Leads
8, 6	50	125V AC/250V AC	4	1.08"	__	PVC Plastic	STW	0° to 140°	UL Listed	Black	000000000	00000
8, 6	50	125V AC/250V AC	30	1.08"	__	PVC Plastic	STW	0° to 140°	UL Listed	Black	000000000	000000
8, 6	50	125V AC/250V AC	36	1.08"	__	PVC Plastic	STW	0° to 140°	UL Listed	Black	000000000	000000
90° Elbow NEMA 14-50 Plug × Spade Terminals
8, 6	50	125V AC/250V AC	4	0.8"	__	PVC Plastic	SRDT	0° to 140°	UL Listed	Black	000000000	00000
8, 6	50	125V AC/250V AC	6	0.8"	__	PVC Plastic	SRDT	0° to 140°	UL Listed	Black	00000000	00000

Premium Straight-Blade Plugs, Sockets, and Receptacles

Built to handle tough, repetitive-use applications, these are more durable than standard straight-blade connectors.

Note: The current rating of your plug should not exceed that of your socket or receptacle.

For technical drawings and 3-D models, click on a part number.

Three-Blade Plugs

NEMA 10-50 Male

Non-Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
10-50	125V AC/250V AC	50A	2.9"	Screw Terminals	0.63"-1.22"	IP20	UL Listed, CSA Certified, UL 94 HB	Black	0000000	0000000

Three-Blade 90° Elbow Plugs

NEMA 6-50 Male

NEMA 10-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wd.	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
5-50	125V AC	50A	__	2.8"	Screw Terminals	0.63"-1.19"	UL Listed, CSA Certified, UL 498	Black	0000000	0000000
6-50	250V AC	50A	2.7"	__	Screw Terminals	0.63"-1.19"	UL Listed, CSA Certified, UL 498	Black	0000000	000000
7-50	277V AC	50A	__	2.8"	Screw Terminals	0.63"-1.19"	UL Listed, CSA Certified	Black	0000000	000000
Non-Grounded
10-50	125V AC/250V AC	50A	2.7"	__	Screw Terminals	0.63"-1.19"	UL Listed, CSA Certified, UL 498	Black	0000000	000000

Four-Blade Plugs

NEMA 14-50 Male

NEMA 15-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
14-50	125V AC/250V AC	50A	2.9"	Screw Terminals	0.63"-1.31"	IP20	UL Listed, CSA Certified, UL 94 HB	Black	0000000	0000000
15-50	250V AC	50A	2.9"	Screw Terminals	0.63"-1.31"	IP20	UL Listed, CSA Certified, UL 94 HB	Black	0000000	000000

Four-Blade 90° Elbow Plugs

NEMA 14-50 Male

NEMA 15-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wd.	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
14-50	125V AC/250V AC	50A	3.4"	__	Screw Terminals	0.63"-1.31"	UL Listed, CSA Certified, UL 498	Black	0000000	0000000
15-50	250V AC	50A	__	3.4"	Screw Terminals	0.63"-1.31"	UL Listed, CSA Certified	Black	0000000	000000

Three-Slot Sockets

NEMA 10-50 Female

Non-Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
10-50	125V AC/250V AC	50A	2.9"	Screw Terminals	0.63"-1.22"	IP20	UL Listed, CSA Certified, UL 94 HB	Black	0000000	0000000

Straight-Blade Plugs, Sockets, and Receptacles

90° elbow plugs with a rotating face can be plugged in at any angle.

Note: The current rating of your plug should not exceed that of your socket or receptacle.

For technical drawings and 3-D models, click on a part number.

Three-Blade Plugs

NEMA 6-50 Male

NEMA 10-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
6-50	250V AC	50A	3.1"	Screw Terminals	0.43"-1.31"	Gray	0000000	000000
Non-Grounded
10-50	125V AC/250V AC	50A	2.6"	Screw Terminals	0.57"-1.26"	Yellow	0000000	00000

Three-Blade 90° Elbow Plugs

NEMA 6-50 Male

NEMA 10-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Features	Color		Each
6-50	250V AC	50A	3.1"	Screw Terminals	0.56"-1.31"	Rotating Face	Gray	0000000	000000
Non-Grounded
10-50	125V AC/250V AC	50A	2.8"	Screw Terminals	0.56"-1.1"	__	Black	0000000	00000

Four-Blade Plugs

NEMA 14-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
14-50	125V AC/250V AC	50A	3.1"	Screw Terminals	0.43"-1.31"	Gray	0000000	000000

Four-Blade 90° Elbow Plugs

NEMA 14-50 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Features	Color		Each
14-50	125V AC/250V AC	50A	3.3"	Screw Terminals	0.63"-1.38"	Rotating Face	Black	0000000	000000

Three-Slot Sockets

NEMA 6-50 Female

NEMA 10-50 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
6-50	250V AC	50A	3.1"	Screw Terminals	0.43"-1.31"	Gray	0000000	000000
Non-Grounded
10-50	125V AC/250V AC	50A	2.6"	Screw Terminals	0.43"-1.32"	Black	0000000	000000

Non-NEMA Turn-Lock Connectors

A quarter turn locks these connectors in place to remain secure in high-vibration applications and prevent accidental disconnection. They are not compatible with NEMA configurations.

Styles A, B, C, and D are also known as California Standard plugs, sockets, and receptacles. Plugs have one slot to accept a grounding pin; sockets and receptacles have one grounding pin.

For technical drawings and 3-D models, click on a part number.

Three-Blade Plugs

Grounded

Style A

Style B

Style C

Style D

Grounded
Style	Voltage	Current	California Standard Connector Style	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
A	125V AC	50A	CS6361	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	0000000
A	250V AC	50A	CS8265	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	000000
B	125V AC/250V AC	50A	CS6365	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified, UL 498	Black	0000000	000000
B	480V AC	50A	CS8165	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified	Black	0000000	000000
C	250V AC	50A	CS8365	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified	Black	0000000	000000
D	480V AC	50A	CS8465	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	000000

Three-Slot Sockets

Grounded

Style A

Style B

Style C

Style D

Grounded
Style	Voltage	Current	California Standard Connector Style	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
A	125V AC	50A	CS6360	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	0000000
A	250V AC	50A	CS8264	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	000000
B	125V AC/250V AC	50A	CS6364	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified	Black	0000000	000000
B	480V AC	50A	CS8164	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified	Black	0000000	000000
C	250V AC	50A	CS8364	2.3"	Screw Terminals	0.68"-1.13"	UL Listed, CSA Certified	Black	0000000	000000
D	480V AC	50A	CS8464	2.6"	Screw Terminals	0.83"-1.25"	UL Listed, CSA Certified, UL 498, UL 94 HB	Black	0000000	000000

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About Industry Designation for Cable Insulation

About NEMA Straight-Blade Plugs, Connectors, and Receptacles

About NEMA Plugs, Sockets, and Receptacles

About Extension Cords

Abrasion-Resistant Extension Cords

Extension Cords for Welding

Extension Cord Adapters

Power Cords

Premium Straight-Blade Plugs, Sockets, and Receptacles

Straight-Blade Plugs, Sockets, and Receptacles

Non-NEMA Turn-Lock Connectors