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 simple 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. Pricing begins near $12.80, and most inventory 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.

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.
- 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 clear rating marks simplify compliance checks.
| Spec | Value | Notes | Color |
|---|---|---|---|
| Current Rating | 20A | Matches common 20 amp breakers | Black (some models blue code) |
| Voltage | 250V | Indoor use only | Black housing |
| Configuration | 2-Pole/3-Wire | Grounding male connector | Black/Blue |
| Body Material | Nylon / Polycarbonate | High-impact and heat-resistant | Black body |
We build 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.
NEMA L6-20P Twist Lock Plug Overview
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 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. Typical conductor compatibility includes 14–10 AWG. The ergonomic fluted body and radial grip ridge help make repetitive wiring faster and more consistent.
| Spec | Rating | Details |
|---|---|---|
| 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 selected 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 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 across 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 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.
Choose from high-impact nylon or polycarbonate bodies with solid brass blades and published cULus/UL listings. Cord fit ranges to 0.375″–1.156″ and ergonomic grips make assembly fast. Pricing starts near $12.80 and most orders ship in 1–2 days from our New York warehouse. We appreciate the chance to support your next order with helpful guidance and fast shipping.