[10 AWG TINNED COPPER WIRE]: The solar panel cable is made of 84 strands 0.295 mm tinned copper, which has better conductivity, thermal conductivity, and corrosion resistance than other common materials, extra-thick insulation can withstand extreme heat and cold. Designed for Extreme Weather. [DUAL XLPE INSULATION]: Built with XLPE material sheath and insulation , withstand extreme heat and cold, working temperatures up to -40℉ to 248℉ (-40℃ to 120℃), anti-UV, anti-corrosion and Oxidation, service life can up to 25 years. [PROFESSIONAL SOLAR EXTENSION CABLE]: Temperature range: environment -40℉ to 248℉ (-40℃ to 120℃), rated voltage: DC 1800V, conductor resistance: (20°C) ≤3.39Ω/KM, weather resistance: UV, rated current: 50A. [DURABLE AND SAFE]: This 10 AWG solar extension cable is IP68 Waterproof. And it has a UL94 V-0 flame retardant rating, which increases the feasibility of using the cable in severe weather such as rain, snow, and wind, and is suitable for outdoor solar panels, Roofs, boats, RVs, or cars powered by solar panels. [EASY TO OPEN&LOCK] Both ends with solar connector (male to female), which is convenient to install and the built-in lock is very stable to protect conductor from water and dust. 1