This is a heavy-duty 20 ft extension cord with NEMA 14-50 connectors suitable for electric vehicle charging. For added versatility, the plug has been specially designed to fit three different types of outlets: NEMA 14-30, 14-50, and 14-60. The cord is made with 6 AWG copper wire, supporting up to 50 amps. The connectors at both ends feature convenient 3-finger handles making it much safer and easier to plug in and unplug. This cable has been designed for EV charging so it has only power and ground connections - there is no neutral wire, which is perfect for electric vehicle charging but will NOT work for RVs or for other applications requiring neutral. (The neutral wire carries a 120V circuit which is used by appliances in RVs, but electric vehicles only use the 240V circuit.) Despite the heavy duty construction and high power capacity, this cord weighs only 10 lbs.