This generator cord and power inlet box set is designed to provide reliable backup power connection for home emergency use or RV power. It includes a 100 ft heavy-duty SJTW 10AWG/4C extension cord with NEMA L14-30P male plug, NEMA L14-30R female receptacle, and a matching power inlet box. The pure copper cable supports steady power transmission up to 30A and 7500W. A flame-retardant PVC jacket and weather-resistant inlet box help support outdoor use in demanding conditions. Pre-drilled holes and included storage accessories make installation and storage more convenient.