NEMA L6-20P Twist Lock Plugs from Installation Parts Supply
One tough 20 amp connection can keep your entire shift running. Teams often lose hours to power faults, so we put the spotlight on l6 20 plug solutions that cut that waste. Our commercial-grade 20A, 250V locking plug options are built to hold under vibration and heavy use.
We make it straightforward to shop and compare all the key 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 near $12.80, and most stock ships in 1–2 days from our New York warehouse.
If you need support picking the right component, our team offers friendly guidance so projects stay on schedule and installs 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 display the key electrical package up front so installers can pair the device with the right 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 clearly marked ratings for easy compliance checks.
| Specification | Rating | Notes | Color |
|---|---|---|---|
| Current | 20A | Aligned with common 20 amp breakers | Black (some models use blue code) |
| Voltage | 250V | For indoor use only | Black housing |
| Configuration | 2-Pole/3-Wire | Male connector with grounding | Black/Blue |
| Material | Nylon / Polycarbonate | High-impact, heat-resistant | Black |
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 ready 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. The male connector is 2-pole/3-wire grounding and 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. Typical conductor compatibility includes 14–10 AWG. The ergonomic fluted body and radial grip ridge help make repetitive wiring quicker and more consistent.
| Spec | Value | Notes |
|---|---|---|
| Configuration | Male locking plug | 2-Pole / 3-Wire grounding |
| Cable OD | 0.375″–1.156″ | Wide strain relief range |
| Conductor | 14–10 AWG | Suitable for 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.
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. This quick turnaround helps you meet deadlines and cut costly downtime.
We ship across 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.
Helpful 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.
- Rugged construction featuring high-impact nylon or polycarbonate bodies plus solid brass blades for dependable 250v service.
- Each device features clear markings for easy submittals and field identification, along with color indicators that help avoid mismatches.
- We can help you match mating connectors, recommend strain relief hardware for your cord, and handle volume or one-off orders.
Wrap-Up
We pair verified performance data with friendly support to 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 ranges to 0.375″–1.156″ and ergonomic grips make assembly fast. Prices start near $12.80, and most orders leave our New York warehouse in 1–2 days. We appreciate the opportunity to support your next order with helpful guidance and quick shipping.