Yellow Jacket 1493 10/4 Heavy-Duty STW 30-Amp/250-Volt Nema L14-30 Generator Power Cord, 25-Feet HEAVY DUTY, FLEXIBLE yellow jacket is ABRASION RESISTANT TWIST-TO-LOCK plugs keeps cords tightly connected POWERS 30-AMP portable generators and power transfer switches MULTIPURPOSE: Suitable for commercial, industrial and residential applications Ideal for use during EMERGENCIES such as natural disasters and power outages UL Listed