FEATURES:  RATING: 30A, Max to 3750 W (125V), 50FT, STW power cord with NEMA TT-30P male plug and NEMA TT-30R female receptacle. ETL approved Polarity LED INDICATING: The reverse polarity LED light of this power cord visually informs you when the power sourcing is in defective conditions Heavy Duty Extension Cord: STW wire made of 100% copper coated with PVC to provide weather resistantand RV Power Extension cord remains flexible in temperatures well below freezing from -40ºC to 105ºC, which can be used indoor/outdoor for all weather and all season.Good conductivity, more flexible and necessary length to connect the campground or park power to your RV, motorhome, trailer or vehicle.   GRIP HANDLE：Equipped with an easy grip handle to make plugging and unplugging this cable easier and safer for you. The RV power extension cord is in black cable blue handle  Limited 12-Month Warranty: EPICORD warrants this product to be free from defects in material and workmanship under normal use and service conditions for 12 months from date of first purchase.  Notice: Dear customer,If you are not satisfied with your project, please email me before leaving feedback, and we can help you.  Thank you for your understanding!