NEMA L6-20P Twist Lock Plugs – Buy 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 l6-20r wiring solutions that prevent that lost time. Our commercial-grade 20A, 250V locking plug units are made to stand up to 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. Prices start near $12.80, and most stock 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.

Commercial-Grade NEMA L6-20P Twist Lock Plugs: Features, Specs, and Benefits
Picking the right connector begins with clear specs and robust construction you can trust. We display the key electrical package up front so installers can pair the device with the right 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.
- 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 clearly marked ratings for easy compliance checks.
| Spec | Rating | Details | Color Code |
|---|---|---|---|
| Current | 20A | Matches common 20 amp breakers | Black (some models blue code) |
| Voltage | 250V | Indoor use only | Black housing |
| Electrical Configuration | 2-Pole/3-Wire | Grounding male connector | Black / Blue |
| Body Material | Nylon / Polycarbonate | High-impact, 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 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 details: 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 range and fit: accepts 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. The ergonomic fluted body and radial grip ridge help make repetitive wiring quicker and more consistent.
| Specification | Rating | Details |
|---|---|---|
| Connector Configuration | Male locking plug | 2-Pole / 3-Wire 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 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.
Reasons to Buy NEMA L6-20P Locking Plugs from Installation Parts Supply
Fast fulfillment and clear support save you time on every job 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 meet deadlines and avoid 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 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 every device support easy submittals and field ID, plus 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 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 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.