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Speedwow 50 Amp RV Extension Cord 125/250V with Generator Inlet Box

Speedwow 50 Amp RV Extension Cord 125/250V with Generator Inlet Box

Last price we saw

$209.99at Walmart, last seen Oct 31

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Our take on the Speedwow 50 Amp RV Extension Cord 125/250V with Generator Inlet Box

The Speedwow 50 Amp RV Extension Cord is a 40 ft, 4-prong power cord bundled with a generator inlet box, built for feeding a 50A RV or transfer switch from a generator or pedestal. It carries the standard NEMA 14-50 configuration at 125/250V, so it handles the split-phase 50A service most large RVs and many home backup setups use. No current price was available for this page, so compare it against other 40 ft 50A cords and inlet box kits before buying.

Best forRV owners on 50A service who need a long run to the pedestalHomeowners wiring a generator inlet for backup powerCampers who want the inlet box and cord in one purchaseAnyone replacing a short or worn 50A cord
Pros
  • 40 ft length gives real reach without an extra cord
  • 4-prong 14-50 ends match standard 50A RV and generator outlets
  • Includes a generator inlet box, saving a separate purchase
  • Rated for 125/250V split-phase service
Cons
  • 40 ft of 6-gauge-class cable is heavy and awkward to coil
  • No price listed here, so value is hard to judge
  • Inlet box installation needs a licensed electrician for a safe, code-compliant job
  • 125V max voltage in the spec conflicts with the 125/250V rating, so confirm the plug type before ordering

Speedwow 50 Amp RV Extension Cord 125/250V with Generator Inlet Box prices at every store

  • WalmartCheck price at Walmart

Speedwow 50 Amp RV Extension Cord 125/250V with Generator Inlet Box price history

Lowest price we've seen: $209.99 on Oct 31 at Walmart. Tracked across 1 store since Oct 31.

Specifications

Number Of Prongs
4 Prongs
Maximum Amperage
50 Amps
Cord Length
40 ft
Max Voltage
125 V

Questions and answers

Is this cord worth it over a cheaper 50A cord?
It depends on the price you find. The inlet box adds value if you are setting up a generator feed, since buying a cord and box separately usually costs more. If you only need a cord, a bare 40 ft 50A cord may be cheaper.
Will it fit my RV's 50A outlet?
It uses a 4-prong NEMA 14-50 style connection, which is the standard for 50A RV service. Check your RV inlet and your pedestal or generator outlet both match that 4-prong layout before buying.
Can I use it with a 30A RV?
No. A 30A RV uses a 3-prong TT-30 plug, and this cord will not fit without an adapter. Even with an adapter, the cord is sized for 50A service and is overkill for a 30A rig.
What comes in the box?
The listing pairs the 40 ft cord with a generator inlet box. Confirm the exact contents and any mounting hardware with the seller, since bundle contents vary.
How long is the cord, and is that enough?
It is 40 ft, which covers most RV pad-to-pedestal distances. Longer runs increase voltage drop, so avoid adding another extension cord on top.
When is the price lowest?
RV power cords tend to dip in late fall and winter, outside camping season. Set a price alert and compare against other 40 ft 50A cords with inlet boxes.

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