SPEEDWOW 20 FT 30 Amp RV Extension Cord, 125/250V Heavy Duty Extension Cord with Generator Inlet Box, SJTW 4X10AWG ETL Listed, NEMAL14-30P to 14-30R, Waterproof Power Cord for RV Outdoor Home
SPEEDWOW 20 FT 30 Amp RV Extension Cord, 125/250V Heavy Duty Extension Cord with Generator Inlet Box, SJTW 4X10AWG ETL Listed, NEMAL14-30P to 14-30R, Waterproof Power Cord for RV Outdoor Home
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SPEEDWOW

SPEEDWOW 20 FT 30 Amp RV Extension Cord, 125/250V Heavy Duty Extension Cord with Generator Inlet Box, SJTW 4X10AWG ETL Listed, NEMAL14-30P to 14-30R, Waterproof Power Cord for RV Outdoor Home

4.6 stars out of 79 reviews
(4.6)|
79 ratings
SPEEDWOW 20 FT 30 Amp RV Extension Cord, 125/250V Heavy Duty Extension Cord with Generator Inlet Box, SJTW 4X10AWG ETL Listed, NEMAL14-30P to 14-30R, Waterproof Power Cord for RV Outdoor Home20FT 30 Amp Generator Cord Pre Drilled Power Inlet Box Heavy Duty Generator Power Cord 4 Prong 125 250V NEMAL14 30P 14 30R Waterproof ETL Listed Home30 Amp Generator Cord Inlet Box 40FT RV Extension Cord NEMAL14 30P L14 30R Twist Lock Connector 125V 250V Generator Extension Cord RV Camper Electric30 Amp Generator Cord Inlet Box 20FT RV Extension Cord NEMAL14 30P L14 30R Twist Lock Connector 125V 250V Generator Extension Cord RV Camper Electric30 Amp Generator Cord Inlet Box 25FT RV Extension Cord NEMAL14 30P L14 30R Twist Lock Connector 125V 250V Generator Extension Cord RV Camper Electric50FT 30 Amp Generator Cord Pre Drilled Power Inlet Box Heavy Duty Generator Power Cord 4 Prong 125 250V NEMAL14 30P 14 30R Waterproof ETL Listed Home25FT 30 Amp Generator Cord Pre Drilled Power Inlet Box Heavy Duty Generator Power Cord 4 Prong 125 250V NEMAL14 30P 14 30R Waterproof ETL Listed Home30 Amp Generator Cord Inlet Box 15FT RV Extension Cord NEMAL14 30P L14 30R Twist Lock Connector 125V 250V Generator Extension Cord RV Camper Electric15FT 30 Amp Generator Cord Pre Drilled Power Inlet Box Heavy Duty Generator Power Cord 4 Prong 125 250V NEMAL14 30P 14 30R Waterproof ETL Listed Home
Cord Length:20 ft
Actual Color:Steel Box

Key item features

  • Robust Power: This 20 FT 30 Amp RV extension cord features SJTW 4X10AWG 100% pure copper cable, supporting 125/250V and up to 7500W, with NEMA L14-30P to 14-30R compatibility.
  • Integrated Inlet: Includes a 30 Amp generator inlet box with NEMA L14-30R compatibility, pre-drilled mounting holes, dual-side cable entry, and a spacious interior for clean wiring.
  • Certified Safety: ETL-certified kit ensures reliable and safe outdoor power, featuring a safety indicator light on the inlet box and designed for optimal performance when fully extended.
  • Extreme Durability: Built with IP68 waterproof rating, dual-layer SJTW sleeve, heavy-duty flame-retardant PVC, and an anti-rust coated metal inlet box with a twist-lock connector and flip-cover.
  • Flexible Storage: Constructed from tough, flexible materials that remain pliable down to -40F, resisting kinks, and includes an adjustable cable winder for convenient, tangle-free storage.
  • Versatile Application: Provides reliable backup power for emergency outages and stable electricity for camping, RV hookups, yacht power, job sites, and outdoor events.
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was $89.99
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Columbus, 43215
Arrives by Wed, Feb 25
Sold by SPEEDWOW
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4.587301587301587 stars out of 5, based on 252 seller reviews(4.6)
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About this item

Product details

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Warranty

Customer ratings & reviews

4.6 out of 5 stars
stars79 ratings58 reviews
How item rating is calculated
  1. 5 stars82% (65)
  2. 4 stars8% (6)
  3. 3 stars1% (1)
  4. 2 stars3% (2)
  5. 1 star6% (5)

Reviews summary

Pros
  • : Made with durable and sturdy components.
  • : Firmly locks into place with this type of connector.
  • : Provides sufficient extension for various uses.
Neutral
  • : Offers competitive pricing, but can be expensive for some users.
Cons
  • : May not match product image or have design variations.
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Showing 1-3 of 58 reviews

Dec 4, 2025
Raybob
Item details
Cord length: 25 ft
Color: Yellow 30A+PC Box
Sold bySPEEDWOWDelivered byWalmart
5 out of 5 stars review

Verified Purchase

product is as advertised

Helpful?38TN8DIEPE6P13130052579
Feb 15, 2026
April
Item details
Cord length: 50 ft
Color: Steel Box
Sold bySPEEDWOWDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Great product

Helpful?38TN8DIEPE6P13130052579
Mar 5, 2025
Ashley
Walmart Associate
Item details
Size: 15'
Color: Black+Yellow 30Amp
Sold bySPEEDWOWDelivered byWalmart
5 out of 5 stars review

Verified Purchase

it was easy to set up and alot cheaper to set up using this

Incentivized Review
Helpful?38TN8DIEPE6P13130052579