NEMA 6-50 25Amp 30Amp 40Amp, 50 Amp
The NEMA 6-50P 50 Amp Welder Power Supply Cord is a robust, heavy-duty electrical cable designed for high-power welding equipment, plasma cutters, MIG/TIG welders, and similar industrial or professional tools. It features a 3-prong NEMA 6-50P plug (two hot wires and ground, no neutral) for direct connection to a matching NEMA 6-50R receptacle, delivering up to 12,500 watts at 250V. This cord is ideal for workshops, garages, or job sites where mobility and reliability are essential. As a “Manufacturer Base” option, it supports custom lengths (e.g., 6FT to 100FT or more), allowing tailored solutions for specific setups. UL-listed for safety and compliance, it uses flexible W-jacketed cable to withstand harsh environments, including outdoor use.
Technical Information
- Plug Type: NEMA 6-50P (3-prong: 2 Hot, Ground)
- Electrical Ratings: 125/250V AC, up to 50A
- Receptacle Required: NEMA 6-50R
- Safety Certification: UL Listed, cUL
- Colors: Grey is standard; custom available
- Operating Temperature:Up to 105°C for the cord
- Applicable Cables:3 conductors: Black/Red Hots, Green Ground)
- Cable Length Options:Custom (e.g., 6FT, 15FT, 25FT, 50FT; up to 100FT available CablesGo)
| LA008C | 6/2 + 8/1, 6/3 | STW, SOW, S, SO, SOO, SOOW, ST, STO, STOW, STOO, STOOW | 50/250 |
| 12/3 | SJT, SJTW, SJTO, SJTOW, SJTOO, SJTOOW, S, SO, SOW, SOO, SOOW, ST, STW, STO, STOW, STOO, STOOW | 25/250 | |
| 10/3 | SJT, SJTW, SJTO, SJTOW, SJTOO, SJTOOW, S, SO, SOW, SOO, SOOW, ST, STW, STO, STOW, STOO, STOOW | 30/250 | |
| 8/3, 8/2+10/1 | S, SO, SOW, SOO, SOOW, ST, STW, STO, STOW, STOO, STOOW | 40/250 |
Applications:
- Professional welding setups (MIG, TIG, stick welders) in fabrication shops or construction sites.
- Extension cords for mobile welders on job sites.
- High-power tools like plasma cutters or air compressors.
- Adapter-compatible use for RV power or EV charging stations.
Installation Notes
- Ensure the receptacle is a NEMA 6-50R rated for 50A/250V; do not use with lower-rated outlets.
- For custom cords, specify length and terminations (e.g., bare wire ends or female connector) when ordering from manufacturers.
- Connect hots (black/red) to L1/L2 terminals and green ground to the ground screw; use torque specs from your welder manual.
- Secure with strain relief at the equipment end to avoid loosening.
- Always turn off power at the breaker and use a licensed electrician for permanent installations. Not compatible with 4-prong (NEMA 14-50) without adapters.
NEMA 6-50 Power Cord Manufacturer
CablesGo manufactures heavy-duty NEMA 6-50 power cords, engineered with a 50 Amp, 250V configuration to deliver reliable, high-current power for demanding applications such as welding equipment and EV / Industrial machinery. Produced in our certified 30,000+ sqm Ningbo facility, every unit is guaranteed through 100% in-house Hi-Pot and continuity testing, ensuring full compliance with UL standards. We provide flexible customization of cord length and jacket color with a competitive 50-piece MOQ, backed by global operations that ensure dependable 10-15 day lead times and cost-effective pricing.
