TÜV tested according to EN 50618: 2014; 2 year manufacturer's warranty Is 2.5mm Cable the Correct Size for Solar Panels? Essential Guide to Solar Panel Wiring - JOCA 4mm2 Double Insulated Solar Wire MOOKEERF Solar Panel Extension Cable - 10AWG 10FT Solar Wire With Female & Male Solar Cable 6mm 4 mm² double-insulated solar cable with 1 pair of solar connectors, ready for connection. Conductor: tin-plated annealed copper; insulation and cable sheath: XLPE, flame-retardant, halogen-free, e-beam cross-linked connections; professional solar cable with plugs (on the module side) and wire end ferrules (on the charge controller side). Suitable for wiring solar systems inside and outside... Rated voltage: AC 1000 V, operating temperature: -40 °C ~ +90 °C. 10 m x 4 mm² double insulated solar cable with 1 pair of original ShiheTec solar plugs ready for connection; Conductor Suitable for wiring solar systems inside and outside buildings; UV, ozone, water resistant