50 Amp Generator Cord 40FT and Power Inlet Box Combo Kit - Durable

In this review the RVINGPRO 50 Amp Generator Cord 40FT and Power Inlet Box Combo Kit is judged for homeowners and contractors who need a reliable emergency power hookup. The bottom line: this kit stands out for its heavy duty 50 amp cable and a pre-drilled inlet box that removes guesswork during installation, making it a practical choice when continuity of power matters. The review focuses on build quality, ease of installation, and outdoor safety so buyers can decide if this combo fits their generator-to-house hookup needs.

Key Features

• Heavy duty cord: The 40 ft cable uses 100% copper conductors and a flame retardant PVC jacket to deliver up to 12,500 watts with durable insulation for outdoor use.
• Twist-lock connection: The female NEMA SS2-50R twist locking connector keeps dust and rain out of the connection and reduces accidental disconnection.
• Pre-drilled inlet box: The 50 amp inlet box is pre-drilled in four directions so you can route conduit or wire quickly without drilling and adapt to different panel approaches.
• ETL listed: Both cord and inlet box carry ETL certification, giving added assurance for safe outdoor operation in adverse weather.
• Installation aids included: The kit includes a 50A adapter plug, cable tie and storage bag so you have the basic accessories needed to complete the hookup and store the cord neatly.

Who It's For

The kit is ideal for RV owners, homeowners with portable generators, and contractors who need a ready-made 50 amp generator-to-home connection that is rated for 125V/250V service and can supply up to 12,500 watts. The heavy gauge STW 6/3 + 8/1 wiring and rugged plugs suit frequent connects and disconnects on job sites or during seasonal outages.

Those who should look elsewhere include users who require custom-length cabling shorter than 40 ft or integrated transfer switch packages; this product is a cord and inlet box combo rather than a transfer switch or whole-house automatic solution.

Pros & Cons

Pros

• Well-built cord with 100% copper conductors and a flame retardant jacket provides confidence in durability and current capacity.
• Pre-drilled inlet box saves time and removes the need to cut into the enclosure, simplifying installation in tight spaces.
• ETL listing and weather-resistant design make it suitable for outdoor emergency use during storms.

Cons

• Fixed 40 ft length may be longer than needed for some installations and cannot be shortened without rewiring.
• The kit does not include a transfer switch, so users needing automatic transition must purchase additional components.

Specifications

Cord length	40 ft
Voltage	125V/250V
Wire gauge	STW 6/3 + 8/1 AWG
Male plug	NEMA 14-50P
Female inlet	NEMA SS2-50P
Maximum wattage	12,500 Watts
Certifications	ETL listed

Our Verdict

The RVINGPRO 50 Amp Generator Cord 40FT and Power Inlet Box Combo Kit is a practical, value-oriented choice for anyone needing a straightforward generator hookup. Its heavy duty 100% copper cord, twist-lock connector, and pre-drilled inlet box make installation faster and more reliable, and the ETL listing supports safe outdoor use. For those who need a rugged manual hookup without a transfer switch, this kit delivers solid performance at a sensible price.

Frequently Asked Questions

Is the cord suitable for wet conditions?
Yes, the cord and inlet box are ETL listed and designed with weather-resistant features to work safely in outdoor conditions.

Will this connect to a standard 50 amp generator outlet?
Yes, the male plug is NEMA 14-50P and the inlet box uses a matching 50 amp twist-lock style, making it compatible with most 50 amp generator outlets when used correctly.

Does the kit include a transfer switch?
No, the kit contains the 40 ft cord, pre-drilled inlet box, 50A adapter plug, cable tie and storage bag; a transfer switch must be sourced separately if automatic switching is required.