NEMA L14-30 Connectors | McMaster-Carr

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45 Products

About NEMA Plugs, Sockets, and Receptacles

About Extension Cords

Turn-Lock Plugs, Sockets, and Receptacles

A quarter turn locks these connectors in place to remain secure in high-vibration applications and prevent accidental disconnection.

Receptacles for outlet boxes fit standard wall plates (not included).

Four-Blade Plugs

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.2"	Screw Terminals	0.23"-1.15"	UL Listed, CSA Certified	Black	0000000	000000

Four-Blade 90° Elbow Plugs

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.6"	Screw Terminals	0.23"-1.15"	UL Listed	Black	0000000	000000

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.2"	Screw Terminals	0.23"-1.15"	UL Listed, CSA Certified	Black	0000000	000000

Four-Slot Single Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Face Dia.	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	1.6"	Screw Terminals	Back, Side	Outlet Box	UL Listed, CSA Certified	Black	0000000	000000

Four-Slot Panel-Mount Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	For Panel Cutout Dia.	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back, Side	2.3"	UL Listed, CSA Certified	Gray	0000000	000000

Four-Blade Panel-Mount Male Receptacles

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	For Panel Cutout Dia.	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back, Side	2.3"	UL Listed, CSA Certified	Gray	0000000	000000

Premium Turn-Lock Plugs, Sockets, and Receptacles

Also known as twist-lock devices, these connectors are built to handle tough, repetitive-use applications, and are more durable than standard turn-lock connectors. A quarter turn locks them in place to remain secure in high-vibration applications and prevent accidental disconnection.

Receptacles for outlet boxes fit standard wall plates (not included).

Four-Blade Plugs

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color	Environmental Rating	Specifications Met		Each
L14-30	125V AC/250V AC	30A	2.3"	Screw Terminals	0.35"-1.15"	Black	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 94 HB, UL 498	0000000	000000

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color	Specifications Met		Each
L14-30	125V AC/250V AC	30A	2.3"	Screw Terminals	0.35"-1.15"	Black	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 94 HB, UL 498	0000000	0000000

Four-Slot Single Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Face Dia.	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Color	Environmental Rating	Specifications Met		Each
L14-30	125V AC/250V AC	30A	1.6"	Screw Terminals	Back, Side	Outlet Box	Black	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 94 V-2, UL 498	0000000	000000

Four-Slot Panel-Mount Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	For Panel Cutout Dia.	Color	Environmental Rating	Specifications Met		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back	2.2"	White	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 94 HB, UL 498	00000000	000000

Four-Blade Panel-Mount Male Receptacles

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	For Panel Cutout Dia.	Color	Environmental Rating	Specifications Met		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back	2.2"	White	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 94 HB, UL 498	0000000	000000

Ground-Monitoring Turn-Lock Plugs and Sockets

Check the status of a ground connection—a green light signals that connectors have power and are safely grounded. A red light indicates power only. The lights are visible from any angle for quick identification. A quarter turn locks connectors in place to remain secure in high-vibration applications and prevent accidental disconnection.

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.2"	Screw Terminals	0.23"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	0000000

Interference-Limiting Turn-Lock Receptacles

Protect computers and other sensitive equipment from electromagnetic interference (EMI). Also known as isolated ground receptacles, they have a ground terminal that is insulated from the mounting strap so you can run an isolated ground wire through the conduit. When mated with a plug, a quarter turn locks them in place to remain secure in high-vibration applications and prevent accidental disconnection. Receptacles fit standard wall plates (not included).

Four-Slot Single Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Face Dia.	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Features	Color		Each
L14-30	125V AC/250V AC	30A	1.6"	Screw Terminals	Back, Side	Outlet Box	Green Triangle, Isolated Ground Connection	Orange	0000000	000000

Washdown Turn-Lock Connectors and Cords

When mated, connectors meet NEMA 6P for protection against corrosion and washdowns. All have a multiple-ring seal and rubber housing to keep out liquid. They resist heat, oil, and chemicals. A quarter turn locks them in place to remain secure in high-vibration applications and prevent accidental disconnection.

Plugs mate with female receptacles and female sockets with an attached cover.

Male receptacles mate with female sockets without an attached cover.

Four-Blade Plugs

NEMA L14-30 Male

Plugs									Caps for Plugs
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each		Each
Grounded
L14-30	125V AC/250V AC	30A	2.8"	Screw Terminals	0.44"-0.75", 0.88"-1"	Yellow	00000000	000000	000000000	000000
L14-30	125V AC/250V AC	30A	2.8"	Screw Terminals	0.44"-0.75", 0.88"-1"	Black	000000000	00000	000000000	00000

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
L14-30	125V AC/250V AC	30A	2.8"	Screw Terminals	0.44"-0.75", 0.88"-1"	Yellow	000000000	000000

Four-Slot Sockets with Attached Cover

NEMA L14-30 Female

Sockets									Replacement Caps for Sockets
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each		Each
Grounded
L14-30	125V AC/250V AC	30A	2.8"	Screw Terminals	0.44"-0.75", 0.88"-1"	Yellow	00000000	0000000	000000000	000000
L14-30	125V AC/250V AC	30A	2.8"	Screw Terminals	0.44"-0.75", 0.88"-1"	Black	000000000	000000	000000000	00000

Four-Slot Single Female Receptacles with Attached Cover

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Color		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back	Outlet Box	Yellow	00000000	000000

Outlet Box—1/2 NPT Female Conduit Connection	00000000	Each	000000
Outlet Box—3/4 NPT Female Conduit Connection	00000000	Each	00000

Four-Blade Single Male Receptacles with Attached Cover

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Color		Each
L14-30	125V AC/250V AC	30A	Screw Terminals	Back	Outlet Box	Yellow	000000000	0000000

Outlet Box—1/2 NPT Female Conduit Connection	00000000	Each	000000
Outlet Box—3/4 NPT Female Conduit Connection	00000000	Each	00000

Corrosion-Resistant Turn-Lock Connectors

Stainless steel hardware and nickel-plated blades or slots protect connectors from damage in corrosive environments. A quarter turn locks them in place to remain secure in high-vibration applications and prevent accidental disconnection.

Receptacles fit standard wall plates (not included).

Four-Blade Plugs

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.2"	Screw Terminals	0.35"-1.15"	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 498, UL 94 HB	Yellow	0000000	000000

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	2.3"	Screw Terminals	0.35"-1.15"	IP20	UL Listed, CSA Certified, Fed. Spec. W-C-596, UL 498, UL 94 HB	Yellow	0000000	0000000

Four-Slot Female Receptacles

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	Face Dia.	Wire Connection Type	Receptacle Terminal Location	Mounting Location	Specifications Met	Color		Each
L14-30	125V AC/250V AC	30A	1.6"	Screw Terminals	Back, Side	Outlet Box	UL Listed, C-UL Listed, CSA Certified	Yellow	0000000	000000

Impact-Resistant Turn-Lock Connectors

A rubber housing protects these connectors from damage caused by drops and impact. Lock them in place with a quarter turn to remain secure in high-vibration applications and prevent accidental disconnection. Not intended for use in wet or damp environments.

Four-Blade Plugs

NEMA L14-30 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
L14-30	125V AC/250V AC	30A	2.1"	Screw Terminals	0.43"-1.15"	Yellow	0000000	000000

Four-Slot Sockets

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Color		Each
L14-30	125V AC/250V AC	30A	2.1"	Screw Terminals	0.43"-1.15"	Yellow	0000000	0000000

Extension Cord Adapters

Plug × Socket

Plug × Socket × Socket

Plug × 90° Elbow End Socket with Handle

NEMA 5-20 Socket

NEMA L5-30 Socket

NEMA 6-50 Socket

NEMA TT-30 Socket

NEMA L5-30 Plug

NEMA L14-30 Socket

NEMA L6-30 Socket

NEMA L14-20 Plug

NEMA L14-30 Plug

NEMA 6-20 Socket

NEMA L14-20 Socket

Change the connection style between an outlet and your equipment.

NEMA TT-30 adapters are often used to power RVs.

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.

						Cord
Lg.	Wire Gauge	Current, A	Voltage	Power-Indicating Light	Features	OD	Insulation Material	Industry Designation	Specifications Met	Color		Each
NEMA L5-30 Plug × NEMA L14-30 Socket
1 1/2 ft.	10	30	125V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Yellow	0000000	000000
NEMA L14-20 Plug × NEMA L14-30 Socket
1 1/2 ft.	10	20	125V AC/250V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Yellow	0000000	00000
NEMA L14-30 Plug × NEMA 5-20 Socket
3 ft.	10	20	125V AC	With Power-Indicating Light	__	0.66"	PVC Plastic	STOW	UL Listed	Yellow	0000000	00000
NEMA L14-30 Plug × NEMA 6-20 Socket
1 1/2 ft.	10	30	125V AC/250V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Yellow	0000000	00000
NEMA L14-30 Plug × 90° Elbow NEMA 6-50 Socket
1 1/2 ft.	10	30	125V AC/250V AC	Without Power-Indicating Light	Handle	0.69"	PVC Plastic	STW	__	Yellow	0000000	00000
NEMA L14-30 Plug × NEMA L5-30 Socket
1 1/2 ft.	10	30	125V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Yellow	0000000	00000
NEMA L14-30 Plug × NEMA L6-30 Socket
1 1/2 ft.	10	30	125V AC/250V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Black	0000000	00000
NEMA L14-30 Plug × NEMA L14-20 Socket
1 1/2 ft.	10	30	125V AC/250V AC	Without Power-Indicating Light	__	0.69"	PVC Plastic	STW	__	Yellow	0000000	00000
NEMA L14-30 Plug × 90° Elbow NEMA TT-30 Socket
1 ft.	10	30	125V AC	With Power-Indicating Light	Handle	0.58"	PVC Plastic	SJTW	__	Gray	0000000	00000

Abrasion-Resistant Turn-Lock Extension Cords

NEMA L14-30 Plug

NEMA L14-30 Socket

Thick insulation protects the internal wires of these cords, so they can be used in high-traffic areas and over rough areas. The insulation also resists water. Give the connectors a quarter turn to lock in place; they remain secure in high-vibration applications.

					Cord
Lg., ft.	Wire Gauge	Current, A	Voltage	Power-Indicating Light	OD	Insulation Material	Industry Designation	Specifications Met	Color		Each
NEMA L14-30 Plug × NEMA L14-30 Socket
10	10	30	125V AC/250V AC	Without Power-Indicating Light	0.62"	PVC Plastic	SJTW	UL Listed, C-UL Listed	Yellow	0000000	000000
20	10	30	125V AC/250V AC	Without Power-Indicating Light	0.62"	PVC Plastic	SJTW	UL Listed, C-UL Listed	Red	0000000	000000
25	10	30	125V AC/250V AC	Without Power-Indicating Light	0.69"	PVC Plastic	STW	UL Listed, C-UL Listed	Yellow	0000000	000000
50	10	30	125V AC/250V AC	Without Power-Indicating Light	0.69"	PVC Plastic	STW	UL Listed, C-UL Listed	Yellow	0000000	000000
100	10	30	125V AC/250V AC	Without Power-Indicating Light	0.72"	PVC Plastic	STW	UL Listed, C-UL Listed	Yellow	0000000	000000