Power Supply Garbage Disposal Extension Cords PS200603 - 3ft. 16/3 SPT-3 Gray Garbage Disposal Cord w/ Straight Plug. Prime® Garbage Disposal cord features 1/2-inch insulation strip with twisted and tip tinned ends for ease of installation. For all electrical appliance such as garbage disposals, electrical motors or anywhere flat parallel cords may be used. Molded-on solid vinyl plugs won't pull apart from the cord.