NEMA L6-20P Twist Lock Plugs – Buy at Installation Parts Supply
A single rugged 20 amp connection can keep a whole shift running. Teams often lose hours to power faults, so we put the spotlight on l6-20r wiring 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. Every item includes pole and wire details, grounding needs, and color indicators so you can see 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. Pricing begins near $12.80, and most inventory 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 include: 20 amp, 250V AC, 2-pole/3-wire grounding configuration for safe, stable 250v service.
- Durable bodies molded from high-impact, heat-resistant nylon or polycarbonate paired with solid brass blades for low resistance.
- A fluted ergonomic body with a radial grip ridge supports confident insertion and withdrawal, even with gloves on.
- UL/cUL listings (Spec # WJ-9433, File # E237606) and clear rating marks simplify compliance checks.
| Spec | Value | Details | Color |
|---|---|---|---|
| Current | 20A | Aligned with common 20 amp breakers | Black (some models blue code) |
| Voltage | 250V | Indoor use only | Black |
| Configuration | 2-Pole/3-Wire | Male connector with grounding | Black / Blue |
| Material | Nylon / Polycarbonate | High-impact and 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 staff is ready to help you match each product to your application.
NEMA L6-20P Twist Lock Plug Overview
A clear wiring plan helps technicians complete assemblies quickly and avoid rework.
Wiring and configuration details: male locking plug with grounding
We list the exact configuration so teams can prepare conductors and tools before 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 | Value | Details |
|---|---|---|
| Connector Configuration | Male locking plug | 2-Pole / 3-Wire grounding |
| Cable Outside Diameter | 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 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.
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. 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
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 with high-impact nylon or polycarbonate bodies and 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.
Final Thoughts
We combine verified performance data with friendly support to speed up your work. These 20 amp, 250V AC, 2-pole/3-wire grounding options provide clear wiring details 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 starts near $12.80 and most orders ship in 1–2 days from our New York warehouse. We value the opportunity to support your next order through helpful guidance and quick shipping.