Product Description: Original extension cable for solar panels 39.2 ft (15 m) / Cable thickness is 4.0 sp. The cable is more durable than the 2.5 sq model. Comes with a connector installed, so you can easily connect it to a solar panel cable. Supports rated up to 30A Completely waterproof. Can also be used outdoors. Product Name: Extension Cable for Solar Panels, Length: 39.2 ft (15 m), Rated Voltage: 1000 V, Rated Current: 30 A, Connection Terminal: MC4 Type, Temperature Range: -40 to 90 °C, Direct Diameter: φ4.0 mm, Certification: TUV