---
product_id: 22399107
title: "Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt"
brand: "conntek"
price: "€ 114.14"
currency: EUR
in_stock: true
reviews_count: 13
category: "Conntek"
url: https://www.desertcart.nl/products/22399107-conntek-29139-180-15-feet-locking-power-cord-for-model
store_origin: NL
region: Netherlands
---

# 250V Heavy-Duty Capacity 30A Locking Power Plug All-Weather Water-Resistant Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt

**Brand:** conntek
**Price:** € 114.14
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up with confidence—lock in reliability, rain or shine!

## Quick Answers

- **What is this?** Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt by conntek
- **How much does it cost?** € 114.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/22399107-conntek-29139-180-15-feet-locking-power-cord-for-model)

## Best For

- conntek enthusiasts

## Why This Product

- Trusted conntek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lock & Load Power:** NEMA L6-30P locking plug ensures secure, no-slip connection for uninterrupted power flow.
- • **15 Feet of Freedom:** Generous length gives you flexible placement without compromising power integrity.
- • **Amp Up Your Charge:** Supports robust 30 Amp current at 250 volts—perfect for medium EV charging and heavy-duty tools.
- • **Durability Meets Safety:** UL & cUL listed for peace of mind with premium materials that prevent overheating during long use.
- • **Built to Brave the Elements:** SJTW 10/3 gauge pure copper cable is water-resistant and weatherproof for reliable outdoor use.

## Overview

The Conntek 29139-180 is a 15-foot, UL-listed locking power cord featuring a NEMA L6-30P 30 Amp male plug to bare wire connection. Designed with heavy-duty 10/3 gauge SJTW pure copper cable, it delivers 250 volts of reliable power while resisting water and extreme weather conditions. Ideal for medium EV charging and demanding electrical applications, this cord combines durability, safety, and flexibility for professional-grade performance.

## Description

NEMA L6-30P 30A 250V Locking Plug to ROJ Power Cord, 30A 250V , UL & cUL Listed

Review: Well Made For Up To 30 Amp Use - I do like for quality of this cord for use as 249 volt for use of medium EV charging speed on my dual voltage EV charger. I will pull around 15 to 16 amp on 20 amp plug. Remember; I will treat it for green as white as the neutral ground on one wire. The former solid white wire will become red as 'Y' live plus Black is 'X' live wire only for 240 volt.
Review: Would recommend - Easy to install, durable, works well.

## Features

- Power Supply Cord - NEMA L6-30 , 30 Amp Male Plug to Bare Wire
- Bare wire/Hard wireQuality Cord – Reliable and Heavy-Duty Power Supply Cord - UL Listed
- Built to Last – 10/3 gauge SJTW and pure copper to avoid the cable getting overheating from long time use.
- All Weather – All weather and water-resistance, safer for emergency and extreme weather
- Length - 15-Feet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00F17QD6W |
| Best Sellers Rank | #98,741 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #940 in Extension Cords |
| Customer Reviews | 4.6 4.6 out of 5 stars (384) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.61 pounds |
| Item model number | 29139-180 |
| Manufacturer | Conntek |
| Product Dimensions | 9 x 9 x 3 inches |

## Product Details

- **Brand:** Conntek
- **Color:** Black
- **Connector Gender:** Male-to-Female
- **Plug Format:** Type B
- **Voltage:** 250 Volts

## Images

![Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt - Image 1](https://m.media-amazon.com/images/I/313e9CtNL0L.jpg)
![Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt - Image 2](https://m.media-amazon.com/images/I/31BM9Q1PTBL.jpg)
![Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt - Image 3](https://m.media-amazon.com/images/I/31bObIDPmAL.jpg)
![Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt - Image 4](https://m.media-amazon.com/images/I/41OzsyLSgFL.jpg)
![Conntek 29139-180 15-Feet Locking Power Cord for Model L6-30P to Model SJTW 10/3, 30-Amp, 250-volt - Image 5](https://m.media-amazon.com/images/I/41jXiLvTKRL.jpg)

## Questions & Answers

**Q: Will this work for a 230 volt 3.7 hp air compressor?**
A: Yes.  It will work for any single phase 240v with a steady state current draw of 30amps or less needing a 3 wire connection (black + red+ ground)

**Q: Do you know if i can use it to backfeed house, gen l6-30p to 10/3 > ac 30amp dis-connect? thank you for your help.**
A: I’m not sure I understand the question. If you use a 3 wire twist lock you will only have 120 volts, you need 4 wires for 240. Why do you want 30 amps for a 120 volt circuit?

**Q: what type of prongs are on the unit. what type of receptacle is needed? e.g. nema 6-30r or ???**
A: The prong on this unit is NEMA L6-30P,  so the receptacle needed is NEMA L6-30R.

**Q: Trying to power server from 240v 30a source. psu takes 110-240v. receptacle is nema l6-30 and need standard american 3 prong female. safe / unsafe?**
A: Need more info to help you. Check if your source is 240/208 volts or 120? As #10 this pre-wired cord has only 3 wires, neutral, hot & ground it will carry up to 30 amps. The plug you add should also be 30 amp comparable but will only transmit either 240/208 or 120 not both. For both you’d need 4 wires & appropriate plugs.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well Made For Up To 30 Amp Use
*by S***N on December 29, 2025*

I do like for quality of this cord for use as 249 volt for use of medium EV charging speed on my dual voltage EV charger. I will pull around 15 to 16 amp on 20 amp plug. Remember; I will treat it for green as white as the neutral ground on one wire. The former solid white wire will become red as 'Y' live plus Black is 'X' live wire only for 240 volt.

### ⭐⭐⭐⭐⭐ Would recommend
*by J***D on March 23, 2025*

Easy to install, durable, works well.

### ⭐⭐⭐⭐⭐ Solidly built heavy duty cord
*by G***K on November 10, 2025*

Needed to replace/beef up a heavy duty table saw cord. This cord is plenty beefy for large 220V shop tools and locks into the receptable solidly, and has some extra length.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-24*