NEMA L6-20P Twist Lock Plugs – Buy at Installation Parts Supply
One tough 20 amp connection can keep your entire shift running. We’ve watched teams lose hours to power faults, so we focus on l6-20 receptacle 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 straightforward to shop and compare all the key 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 around $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.

Features, Specs, and Benefits of Commercial-Grade NEMA L6-20P Twist Lock Plugs
Choosing the right connector starts with clear specifications and durable construction you can rely 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 operation.
- High-impact, heat-resistant nylon or polycarbonate bodies combined with solid brass blades for low resistance.
- Ergonomic fluted body and radial grip ridge for confident insertion and withdrawal, even with gloves.
- UL/cUL listings (Spec # WJ-9433, File # E237606) and clearly marked ratings for easy compliance checks.
| Specification | Value | Details | Color |
|---|---|---|---|
| Current Rating | 20A | Aligned with common 20 amp breakers | Black (some models blue code) |
| Voltage Rating | 250V | Indoor use only | Black housing |
| Configuration | 2-Pole/3-Wire | Male connector with grounding | Black / Blue |
| Body Material | Nylon / Polycarbonate | High-impact, 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 details: male locking plug with grounding
We provide the exact configuration so teams can prep conductors and tools ahead of assembly. The male connector uses a 2-pole/3-wire grounding configuration and is rated at 20 amp, 250v AC.
Cable size range and fit – accommodates 0.375″-1.156″ OD cords
Each unit accepts a broad cord range for flexible installations. These plugs typically support conductors from 14–10 AWG. The ergonomic fluted body and radial grip ridge help make repetitive wiring faster and more consistent.
| Spec | Value | Details |
|---|---|---|
| Connector Configuration | Male locking plug | 2-Pole / 3-Wire with grounding |
| Cable Outside Diameter | 0.375″–1.156″ | Wide strain relief range |
| Conductor | 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. For more wiring details, our team can help match the correct cord OD, wire gauge, and clamp hardware to your application.
Why Buy 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 moving 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 throughout 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
You can reach our product experts M–F, 8:00 a.m.–5:30 p.m. EST by phone or email to verify specs like amp rating, grounding needs, and cord OD ranges.
- Durable construction with high-impact nylon or polycarbonate bodies and solid brass blades for dependable 250v service.
- Clear markings on each device for easy submittals and field ID, including color indicators to avoid mismatches.
- We help match mating connectors, recommend strain relief hardware for your cord, and support volume or single-unit orders.
Wrap-Up
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. Prices start near $12.80, and most orders leave our New York warehouse in 1–2 days. We value the opportunity to support your next order through helpful guidance and quick shipping.