20 Foot Mc3 Solar Cable for Photovoltaic Solar Panel Mc3 Solar Connector Cable 20 Feet Long and Mc3 Connectors At Each End. Solar Connector Cable 20 feet 10awg with Mc3 at each end. Made with High Quality TUV, and UL Rated Components. Engineered for Long Life and Outdoor Applications. Shipped Fast from U.S. Seller! Visit our store for all sizes! Greener World Store Brand Cables are 100% Guaranteed!