NEMA L6-20P Twist Lock Plugs from Installation Parts Supply
A single rugged 20 amp connection can keep a whole shift running. We’ve watched teams lose hours to power faults, so we focus on l6 20 plug solutions that prevent that lost time. Our commercial-grade 20A, 250V locking plug units are made to stand up to vibration and heavy use.
We make it easy to shop and compare product information. Each item shows pole and wire details, grounding requirements, and color indicators so you understand how it fits your devices.
Thanks to high-impact housings, solid brass blades, and UL/cUL listings, these units are ready for real-world job site demands. Prices start near $12.80, and most stock ships in 1–2 days from our New York warehouse.
When you need help choosing the right component, our team is ready with friendly guidance so projects stay on schedule and installations meet code.

Commercial-Grade NEMA L6-20P Twist Lock Plugs: Features, Specs, and Benefits
Choosing the right connector starts with clear specs and durable construction you can count on. We list the core electrical package up front so installers match the device to the correct breaker and wire size.
Key electrical ratings: 20 amp, 250V AC, 2-pole/3-wire grounding configuration for safe, stable 250v service.
- High-impact, heat-resistant nylon or polycarbonate bodies combined with solid brass blades for low resistance.
- Ergonomic fluted body plus a radial grip ridge provide confident insertion and removal, even when wearing gloves.
- UL/cUL listings (Spec # WJ-9433, File # E237606) and clearly marked ratings for easy compliance checks.
| Specification | Value | Details | Color |
|---|---|---|---|
| Current | 20A | Aligned with common 20 amp breakers | Black (some models blue code) |
| Voltage | 250V | Indoor use only | Black |
| Electrical Configuration | 2-Pole/3-Wire | Male connector with grounding | Black / Blue |
| Body Material | Nylon / Polycarbonate | High-impact and heat-resistant | Black |
We curate each product page with pole layout, wire ranges, and grounding guidance so you can spec the right item without guesswork. Our team is available to help match a product to your application.
Overview of NEMA L6-20P Twist Lock Plugs
A clear wiring plan lets technicians finish assemblies faster and cut down on rework.
Wiring and configuration information – male locking plug with grounding
We list the exact configuration so teams can prep conductors and tools before assembly. This male connector is 2-pole/3-wire grounding and carries a rating of 20 amp, 250v AC.
Cable range and fit: accepts 0.375″-1.156″ OD cords
Each unit accepts a broad cord range for flexible installations. Typical conductor compatibility covers 14–10 AWG. The ergonomic fluted body and radial grip ridge help make repetitive wiring faster and more consistent.
| Spec | Rating | Details |
|---|---|---|
| Connector Configuration | Male locking plug | 2-Pole / 3-Wire with grounding |
| Cable OD | 0.375″–1.156″ | Wide strain relief range |
| Conductor Range | 14–10 AWG | Matches 20 amp terminations |
| Listings & Use | cULus on select items | Indoor use on specific models |
At Installation Parts Supply, we help guide wiring steps and cord selection so your order shows up ready for an efficient installation. If you need more wiring information, our team will help you match the right cord OD, wire gauge, and clamp hardware to your application.
Why Purchase NEMA L6-20P Locking Plugs from Installation Parts Supply
Fast fulfillment and clear support save time on every job, especially when power is critical. We keep stock flowing from our Sanborn, NY warehouse so orders typically ship in 1–2 days. That quick turnaround helps you hit deadlines and avoid costly downtime.
We ship across the U.S. with reliable transit times. Typical pricing starts near $12.80 each, and select items carry cULus listings (Cord Connector 91GG) with Spec # WJ-9433 and File # E237606.
Friendly product expertise and support
Our product experts are available M–F, 8:00 a.m.–5:30 p.m. EST by phone or email to confirm specifications like amp rating, grounding needs, and cord OD ranges.
- Durable construction: high-impact nylon or polycarbonate bodies with solid brass blades for dependable 250v service.
- Clear markings on every device support easy submittals and field ID, plus color indicators to avoid mismatches.
- We assist with matching mating connectors, recommend strain relief hardware for your cord, and support both volume and single-unit orders.
Conclusion
We combine verified performance data with friendly support to speed up your work. Our 20 amp, 250V AC, 2-pole/3-wire grounding options offer clear wiring information and dependable locking engagement for mission-critical installs.
Select high-impact nylon or polycarbonate bodies with solid brass blades backed by published cULus/UL listings. Cord fit from 0.375″–1.156″ combined with ergonomic grips helps make assembly quick. Pricing begins near $12.80 and most orders ship within 1–2 days from our New York warehouse. We value the opportunity to support your next order through helpful guidance and quick shipping.