NEMA L6-20P Twist Lock Plugs – Shop at Installation Parts Supply
A single rugged 20 amp connection can keep a whole shift running. We see teams lose hours to power faults, so we focus on l6-20r wiring solutions that stop that waste. 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. Every item includes pole and wire details, grounding needs, and color indicators so you can see how it fits your devices.
Featuring high-impact housings, solid brass blades, and UL/cUL listings, these units meet real-world job site demands. Pricing begins near $12.80, and most inventory ships in 1–2 days from our New York warehouse.
When you need help selecting 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 specs and durable construction you can count on. We show the core electrical package up front so installers can match the device to the proper breaker and wire size.
Core electrical ratings: 20 amp, 250V AC, 2-pole/3-wire grounding configuration for safe, stable 250v operation.
- Durable bodies molded from high-impact, heat-resistant nylon or polycarbonate paired 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 clear rating marks simplify compliance checks.
| Spec | Value | Details | Color Code |
|---|---|---|---|
| Current Rating | 20A | Aligned with common 20 amp breakers | Black (some models use blue code) |
| Voltage Rating | 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.
NEMA L6-20P Twist Lock Plugs
A clear wiring plan helps technicians complete assemblies quickly and avoid rework.
Wiring and configuration information: male locking plug with grounding
We list the exact configuration so teams can prep conductors and tools before 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 | Notes |
|---|---|---|
| Configuration | Male locking plug | 2-Pole / 3-Wire with grounding |
| Cable OD | 0.375″–1.156″ | Robust strain relief range |
| Conductor Range | 14–10 AWG | Matches 20 amp terminations |
| Listings & Use | cULus on select items | Indoor use on selected models |
At Installation Parts Supply, we walk you through wiring steps and cord selection so your order arrives ready for an efficient install. If you need more wiring information, our team will help you match the right cord OD, wire gauge, and clamp hardware to your application.
Reasons to 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 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 throughout the U.S. with reliable transit times. Typical pricing begins around $12.80 each, and select items carry cULus listings (Cord Connector 91GG) with Spec # WJ-9433 and File # E237606.
Friendly product expertise and customer 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.
- Rugged construction featuring high-impact nylon or polycarbonate bodies plus 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 assist with matching mating connectors, recommend strain relief hardware for your cord, and support both volume and single-unit orders.
Final Thoughts
We combine verified performance data with friendly support to speed up 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.
Choose between high-impact nylon or polycarbonate bodies with solid brass blades and 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.