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Black NEMA L7-20P locking plug with T-shaped blades and screw terminals

LORDWORLD

LORDWORLD NEMA L7-20P 20A 277V Locking Plug Black

SKU CH-WNF9-3XRGX

ETL-listed NEMA L7-20P locking plug rated 20 A, 277 V and 5540 W for industrial generators and equipment

  • ETL Listed for verified safety compliance
  • Locking NEMA L7-20P design prevents accidental disconnection
  • 20 A 277 V rating delivers up to 5540 W power
  • Rewireable terminals marked X Y Z G W for clear installation
  • Compatible with 10 AWG to 18 AWG three-conductor cords

Industrial Locking Plug

The LORDWORLD NEMA L7-20P is a 20 amp, 277 volt male AC connector designed for industrial generator and equipment applications. Its twist-lock mechanism secures the connection against vibration or accidental disconnection. The unit is ETL listed and built with heavy-duty conducting materials for robust performance. It serves as a reliable replacement plug for compatible power cords.

NEMA L7-20P Configuration

The rotated T-shaped blade prevents accidental mating with non-L7-20R receptacles, ensuring voltage-specific safety. Terminal markings include X, Y, Z for line conductors, W for the grounded conductor, and G for the grounding terminal. Compliance covers UL 498:2017 Ed.16+R:20Jun2024 and CSA C22.2#42:2010 Ed.7+U1 through U5 standards. The plug supports a maximum rating of 5540 watts at the specified voltage.

Cord Compatibility Range

The connector accepts three-conductor cords ranging from 18 AWG up to 10 AWG across multiple jacket types including SJT, SJTW, ST, STW, SJO, SJOW, and related variants. Ampacity varies with wire gauge: 20 amps for 12/10 AWG, 18 amps for 14/13 AWG, 13 amps for 16/15 AWG, and 10 amps for 17/18 AWG. This DIY-rewireable design allows straightforward field installation on existing cable assemblies. Installers who need a different NEMA locking configuration or a female connector will not be served by this specific part.

How it compares

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Price $19.99
Cheaper than about 60% of the 5,998 comparable items (median $24.99).

Specifications

Product
Brand nameLORDWORLD

Questions about this item

What does the 5540 watt rating mean when this plug is wired into a circuit?

It represents the maximum continuous power the plug can deliver at 277 volts and 20 amps before the conductors or terminals overheat.

How does the NEMA L7-20P twist-lock interface limit what this plug can connect to?

The rotated T-shaped blades only mate with a matching NEMA L7-20R receptacle, preventing accidental insertion into other 20 amp 277 volt locking sockets.

What cable diameters and jacket types can be terminated in this plug?

It accepts 18 AWG through 10 AWG three-conductor cords with SJT, SJTW, SJTO, ST, STW, STO, SJE, SJO or similar thermoplastic jackets.

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