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Fifty-foot orange welder extension cord with black NEMA 6-50 plugs, coiled on floor

BFKK

BFKK 50 ft 250 V 40 A 8/3 Welder Extension Cord

SKU CH-5AYC-SC5DT

A 50 ft heavy-duty 8 AWG extension cord rated 40 A at 250 V with NEMA 6-50 plugs and an STW jacket for -40 °F to 140 °F operation

  • 50 ft reach extends power to distant outlets
  • 40 A pure-copper conductors handle heavy welder loads
  • STW jacket rated from -40 °F to 140 °F resists weather and heat
  • NEMA 6-50P male and 6-50R female fit most welders
  • ETL approved for verified safety compliance

50 ft 40 A Welder Extension Cord

This 50 ft heavy-duty extension cord is rated for 40 A at 250 V, making it suitable for MIG, TIG and plasma cutting equipment. It uses 8 AWG all-copper conductors inside an STW jacket that remains flexible from -40 °F to 140 °F. The cord carries ETL approval for safety compliance.

NEMA 6-50 Plug Compatibility

Installation is straightforward: the cord terminates in a NEMA 6-50P male plug and a NEMA 6-50R female receptacle, matching the most common industrial welder outlets. No tools or wiring are required; simply connect between the welder and the power source. Ensure the outlet and breaker are rated for 40 A to avoid nuisance tripping.

8 AWG Copper Conductor Capacity

The single specification that determines suitability is the 8 AWG all-copper conductor rated for 40 A continuous duty. If your welder draws more than 40 A or requires a different plug configuration, this cord will not meet the load or connection requirements.

How it compares

Measured against everything we stock in AC Extension Cords, at today’s prices. Recalculated every night.

Price $147.99
Pricier than about 93% of the 864 comparable items (median $15.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the cord is delivering full power to my welder after I plug it in?

The cord uses 8 AWG all-copper conductors rated for 40 A at 250 V; if your welder runs at its normal duty cycle without tripping the breaker, the cord is performing as specified.

What comes with the cord and what must I supply myself?

The package includes the 50 ft extension with a NEMA 6-50P male plug and a NEMA 6-50R female receptacle plus a carrying strap; you only need to provide the welder and a matching 6-50 outlet.

Which length or gauge should I choose for a 40 A welder?

This model is a single 50 ft, 8 AWG assembly rated 40 A at 250 V; no other lengths or gauges are offered for this product.

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