Iron Box 8/4 SOOW Wire Cord Cable, 10 Foot, Portable Power, 8 Gauge 4 Conductor (10 ft). Heavy-Duty, Flexible, and Durable, Water and Oil Resistant, Ideal for Generators, Circuits, and Data Centers:
Blastking RS1X4X10-150 10 AWG 4-Conductor Speaker Cable 150 Ft
3' FT New Real Copper Wire, 10/4, 10 AWG Gauge 4 Conductor Wires Red White Black Green, Stranded Cable, Indoor Outdoor, 600V Volt Water and Oil Resistant Flexible Rubber. FX1373-3: Amazon.com: Tools
AC WORKS 10ft NEMA L14-30 Cord 10-ft 10 / 4-Prong Indoor/Outdoor Soow Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com