NEMA L6-20P Twist Lock Plugs – Shop at Installation Parts Supply
One rugged 20 amp connection can keep an entire shift running. We’ve watched teams lose hours to power faults, so we focus on NEMA chart twist lock solutions that prevent that lost time. Our commercial-grade 20A, 250V locking plug options are built to hold under vibration and heavy use.
We make it easy to shop and compare product information. Each item lists pole and wire details, grounding requirements, and color indicators so you know how it fits your devices.
Featuring high-impact housings, solid brass blades, and UL/cUL listings, these units meet 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.

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 operation.
- Durable bodies in high-impact, heat-resistant nylon or polycarbonate 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) along with clearly marked ratings make compliance checks easy.
| Spec | Value | Details | Color |
|---|---|---|---|
| Current | 20A | Aligned with common 20 amp breakers | Black (some models blue code) |
| Voltage | 250V | Indoor use only | Black housing |
| Configuration | 2-Pole/3-Wire | Male connector with grounding | Black/Blue |
| Material | Nylon / Polycarbonate | High-impact and heat-resistant | Black body |
Every product page is curated with pole layout, wire ranges, and grounding guidance so you can specify the correct item without guessing. Our team is available to help match a product to your application.
Overview of NEMA L6-20P Twist Lock Plugs
A clear wiring plan helps technicians finish assemblies fast and without rework.
Wiring and configuration information: male locking plug with grounding
We provide the exact configuration so teams can prep conductors and tools ahead of assembly. This male connector is 2-pole/3-wire grounding and carries a rating of 20 amp, 250v AC.
Cable size range and fit: accommodates 0.375″-1.156″ OD cords
Every unit accepts a wide cord range to allow flexible installs. These plugs typically support conductors from 14–10 AWG. An ergonomic fluted body and radial grip ridge help make repeated wiring tasks quicker and more consistent.
| Spec | Rating | Notes |
|---|---|---|
| Connector Configuration | Male locking plug | 2-Pole / 3-Wire with grounding |
| Cable Outside Diameter | 0.375″–1.156″ | Robust strain relief range |
| Conductor | 14–10 AWG | Suitable for 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 information, our team will help 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 moving from our Sanborn, NY warehouse so orders typically ship in 1–2 days. This quick turnaround helps you meet deadlines and cut 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
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 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.
Final Thoughts
We bring together verified performance data and friendly support to help speed your work. Our 20 amp, 250V AC, 2-pole/3-wire grounding options deliver 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 appreciate the chance to support your next order with helpful guidance and fast shipping.