This AC WORKS brand 75ft L6-30 extension cord is popular for use with breweries, saws, plasma cutters, boiler/steamers, server racks, and industrial construction. The cord is an SOOW, 10/3, 30 Amp copper wire with a 600 Volt rubber jacket. The jacket is anti-cold weather staying flexible in extreme temperatures. It is a NEMA L6-30 locking power cord.