CircleCord 50 Amp 100 ft RV/EV Extension Cord - Heavy Duty

In this review the CircleCord 50 Amp 100 ft extension cord is evaluated for owners of EVs and 50 Amp RVs who need a long, rugged power lead. The bottom line: it is a straightforward, heavy duty NEMA 14-50P to 14-50R cord built with pure copper STW wire and UL listing, making it a safe, reliable option for Level 2 EV charging and campsite power runs where durability and weather resistance matter most.

Key Features

• Electrical Rating: The 50 Amp capacity supports up to 12,500 W at 250V or 6,250 W at 125V, giving enough power for most EV Level 2 charging and standard 50 Amp RV needs.
• Construction: STW pure copper wiring provides consistent conductivity and reduced voltage drop over the 100 ft length, which is important for sustained charging sessions.
• Weather Resistant Jacket: The heavy duty flame retardant, heat resistant and UV resistant PVC jacket protects the cord from rain, sun, snow and rough surfaces at campsites or driveways.
• UL Listed: The cord carries a UL listing, which indicates it meets recognized safety standards rather than relying on generic equivalents.
• Hands-on Design: Both ends include grip handles to make plugging and unplugging safer and easier, especially in wet or cold conditions.
• Storage Accessories: The kit includes an adjustable cord organizer and storage bag to keep the long cable manageable when not in use.

Who It's For

The CircleCord 50 Amp 100 ft extension cord is aimed at EV owners who use Level 2 charging at home or on the road and RV owners who need a reliable 50 Amp feed at campsites. It's particularly useful when the charging inlet or pedestal is a significant distance from the parking spot.

Shoppers who need a very short run or who require specialized industrial connectors should look elsewhere; likewise those who want a permanently mounted hardwired solution will find a portable extension cord unnecessary. For most Tesla Model 3, S, X, Y owners and 50 Amp RV trailer users, this is a practical portable option.

Pros & Cons

Pros

• Heavy duty pure copper construction feels robust and performs well under sustained load.
• UL listing offers added reassurance about safety and build standards.
• Weather resistant PVC jacket and grip handles make outdoor use easier and more durable.
• Included organizer and storage bag make transport and storage more convenient.

Cons

• The cord organizer can be tight for the full 100 ft circle for some users and may require adjustment.
• At 100 ft the cable is bulky to wind and handle despite the storage bag, which may be a minor inconvenience for solo users.

Specifications

Our Verdict

The CircleCord 50 Amp 100 ft extension cord is a practical, value-oriented choice for EV drivers and RV owners who need a long, portable 14-50 connection. Its UL listing, pure copper STW construction and weather resistant jacket make it a trustworthy option for regular outdoor use, and the included storage accessories add convenience; choose it if you want a durable, safety-focused extension cord for Level 2 charging or campsite power.

Frequently Asked Questions

Is this cord safe for Level 2 EV charging?
Yes. The cord is rated 50 Amp, uses pure copper STW wiring and is UL Listed, making it suitable for Level 2 charging with compatible EVs.

Will it work with Tesla Model 3 and other Tesla models?
Yes. The NEMA 14-50P to 14-50R configuration is compatible with Tesla vehicles using a 14-50 adapter for Level 2 charging.

How easy is it to store a 100 ft cord?
The cord ships with an adjustable organizer and a storage bag; customers note the organizer can be tight for the full length so you may need to form a slightly larger loop when winding.