S7 50 Amp Generator Extension Cord 13ft — NEMA 14-50P to SS2-50R Twist-Lock, 12,500W STW

The S7 50 Amp generator extension cord is a 13-foot, heavy-duty STW power cable with NEMA 14-50P to SS2-50R twist-lock connections, rated for 50A, 125/250V and up to 12,500W.

This cord is built for dependable temporary power transfer between a portable generator and a compatible inlet box, transfer switch, or RV connection. Constructed with pure copper conductors in a 6/3 + 8/1 AWG configuration and protected by an outdoor-ready STW jacket, it balances high current capacity with flexible handling. The twist-lock female end secures the connection to reduce accidental disconnection during windy or active conditions, while the included strap and ergonomic grip simplify transport and storage.

How does this cord handle high-power generator connections?

The S7 cord is sized and rated to support most 50A generator outputs safely when used with compatible equipment. Its wire gauge and connectors are selected to minimize voltage drop and heat under load, making it suitable for temporary backup power and job-site use.

• 50A current rating and 125/250V compatibility for split-phase systems
• Max power handling up to 12,500 watts when matched to the generator
• Pure copper conductors for improved conductivity and lower resistance
• 6/3 (three 6 AWG conductors) + 8/1 (one 8 AWG conductor) wiring layout

Will the connectors stay secure outdoors or in bad weather?

The twist-lock SS2-50R female connector with a locking ring keeps the plug firmly seated during operation, reducing the chance of partial or complete disengagement. The design also helps protect the connection area from debris and moisture when in use.

• NEMA 14-50P male plug fits common 50A generator outlets
• SS2-50R/CS6364 twist-lock female locks in place for stable connections
• Locking ring and tight mating reduce dust ingress and accidental pulls
• STW jacket rated for outdoor and seasonal use

How portable and easy to use is the S7 generator cord?

At 13 feet the cable is short enough for compact generator placements yet long enough to bridge to nearby inlet boxes or transfer switches. Ergonomic molded grips and the included storage strap make hooking up and coiling the cord fast and less strenuous.

• 13FT length ideal for generator-to-inlet-box setups
• Ergonomic grip for easier plugging and unplugging
• Included strap secures the cord for storage and transport
• Flexible STW jacket simplifies handling in cooler temperatures

What applications is this cord best suited for?

This cable is intended for temporary power delivery where a 50A generator outlet connects to a compatible inlet or device. It’s designed for household backup during outages, RV shore power scenarios, light construction sites, and camping setups that require higher current capacity.

• Home backup power and storm preparedness
• RV connections and outdoor travel power needs
• Job-site temporary power for tools and equipment
• Generator-to-transfer-switch or inlet-box connections

Who is this for: Owners of portable 50A generators, RVers using 50A shore connections, homeowners preparing a reliable backup power hookup, and contractors needing a rugged short-run power cable. If you require a heavy-duty, outdoor-rated 13-foot power cord with secure twist-lock connections and copper conductors for efficient current delivery, the S7 50A generator extension cord is engineered to meet those needs without overcomplication.