Ground-Monitoring Plugs | McMaster-Carr

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25 Products

About NEMA Straight-Blade Plugs, Connectors, and Receptacles

About NEMA Plugs, Sockets, and Receptacles

Ground-Monitoring Straight-Blade Plugs and Sockets

Check the status of your 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.

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

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

Three-Blade Plugs

NEMA 5-15 Male

NEMA 5-20 Male

NEMA 6-15 Male

NEMA 6-20 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Specifications Met	Color		Each
5-15	125V AC	15A	1.4"	Screw Terminals	0.23"-0.72"	IP20	UL Listed, C-UL Listed, Fed. Spec. W-C-596	Black	0000000	000000
5-20	125V AC	20A	1.4"	Screw Terminals	0.23"-0.72"	IP20	UL Listed, C-UL Listed, Fed. Spec. W-C-596	Black	0000000	00000
6-15	250V AC	15A	1.4"	Screw Terminals	0.23"-0.72"	IP20	UL Listed, C-UL Listed, Fed. Spec. W-C-596	Black	0000000	00000
6-20	250V AC	20A	1.4"	Screw Terminals	0.23"-0.72"	IP20	UL Listed, C-UL Listed, Fed. Spec. W-C-596	Black	0000000	00000

Three-Slot Sockets

NEMA 5-15 Female

NEMA 5-20 Female

NEMA 6-15 Female

NEMA 6-20 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Environmental Rating	Color		Each
5-15	125V AC	15A	1.4"	Screw Terminals	0.23"-0.72"	IP20	Black	0000000	000000
5-20	125V AC	20A	1.4"	Screw Terminals	0.23"-0.72"	IP20	Black	0000000	00000
6-15	250V AC	15A	1.4"	Screw Terminals	0.23"-0.72"	IP20	Black	0000000	00000
6-20	250V AC	20A	1.4"	Screw Terminals	0.23"-0.72"	IP20	Black	0000000	00000

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.

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

Three-Blade Plugs

NEMA L5-15 Male

NEMA L5-20 Male

NEMA L5-30 Male

NEMA L6-20 Male

NEMA L6-30 Male

NEMA L7-15 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L5-15	125V AC	15A	1.5"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000
L5-20	125V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L5-30	125V AC	30A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L6-15	250V AC	15A	1.5"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L6-20	250V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L6-30	250V AC	30A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L7-15	277V AC	15A	1.5"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000

Four-Blade Plugs

NEMA L14-20 Male

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-20	125V AC/250V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000

Three-Slot Sockets

NEMA L5-15 Female

NEMA L5-20 Female

NEMA L5-30 Female

NEMA L6-15 Female

NEMA L6-20 Female

NEMA L6-30 Female

NEMA L7-15 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L5-15	125V AC	15A	1.4"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000
L5-20	125V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L5-30	125V AC	30A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000
L6-15	250V AC	15A	1.4"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L6-20	250V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000
L6-30	250V AC	30A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000
L7-15	277V AC	15A	1.4"	Screw Terminals	0.23"-0.69"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	00000

Four-Slot Sockets

NEMA L14-20 Female

NEMA L14-30 Female

Grounded
NEMA Style	Voltage	Current	OD	Wire Connection Type	For Cable OD	Specifications Met	Color		Each
L14-20	125V AC/250V AC	20A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000
L14-30	125V AC/250V AC	30A	2.2"	Screw Terminals	0.39"-1.15"	UL Listed, C-UL Listed, Fed. Spec. W-C-596, UL 498	Black	0000000	000000