Conntek 20602 50-Foot 10/4 30 Amp 125/250 Volt 4 Prong L14-30 Transfer Switch Cord/Generator Extension Cord
Generator Extension Cord, 3 Pole, 4 Wire Grounding, NEMA L14-30P to NEMA L14-30R Max Power: 7500W, Stays flexible in cold weather, Heat Resistant up to 221F Application:Transfer Switches, Generator,...etc. Approval: Plug, Connector, : UL, C-UL  Cable: 50FT STW 10/4 rating:30A 125/250V