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Orange industrial NEMA L7-20R female locking plug with T-shaped blade

LORDWORLD

LORDWORLD NEMA L7-20R 20A 277V Female Locking Plug Orange

SKU CH-M640-N2SQ9

ETL-listed NEMA L7-20R female locking connector rated 20A 277V for industrial generator cords up to 10 AWG

  • ETL listed safety certification meets UL 498 and CSA 22.2 standards
  • 20 amp 277 volt rating delivers 5540 watt power capacity
  • Twist lock design prevents accidental disconnection from matching L7-20P plug
  • Accepts 18 to 10 AWG cord sizes for flexible wiring options
  • Clearly marked X Y Z G W terminals simplify installation and wiring

NEMA L7-20R Locking Connector

This ETL listed female socket provides a 20 A 277 V AC connection for industrial generators and equipment. The twist lock design mates only with a matching NEMA L7-20P plug, preventing accidental cross connection. It is supplied new and ready for field wiring.

Wiring Flexibility And Terminal Markings

The connector accepts 18 to 10 AWG three conductor cords across types such as SJT, SJTW, ST, STW, SJE, SJEO and SJO families. Line terminals are marked X, Y, Z, the grounding terminal G and the grounded terminal W for clear installation. Current capacity varies with wire gauge from 10 A at 18 AWG up to 20 A at 10 AWG.

Voltage And Standard Limits

The device is rated for 277 V single phase service delivering up to 5540 W at the full 20 A rating. It complies with UL 498 2017 edition including the 2024 revision and CSA C22.2 No 42 2010 edition. Builders needing a different voltage class or a higher amperage rating must select an alternative NEMA configuration.

Highlights

  • ETL listed safety certification meets UL 498 and CSA 22.2 standards
  • 20 amp 277 volt rating delivers 5540 watt power capacity
  • Twist lock design prevents accidental disconnection from matching L7-20P plug
  • Accepts 18 to 10 AWG cord sizes for flexible wiring options
  • Clearly marked X Y Z G W terminals simplify installation and wiring

Specifications

BrandLORDWORLD

Questions about this item

What does the NEMA L7-20R rating cap at for continuous power?

The connector is rated for 20 amps at 277 volts, giving a maximum continuous load of 5540 watts when wired with 12 or 10 AWG cord.

What cord sizes and terminal markings are required to mount this socket?

It accepts 18 to 10 AWG three-conductor cord; terminals are marked X, Y, Z for lines, G for grounding and W for the grounded conductor.

How do you lock the plug into this female connector, and what mistake causes a loose fit?

Insert the matching NEMA L7-20P plug and twist to engage the rotated T-shaped blade; failing to rotate fully leaves the latch disengaged and the connection unsecured.

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