Thermoplastic jacket cord not for hard use. Ideal to be used in lamps, small appliances, and radios. 300-volt rating in a 250-foot spool. UL (Underwriter's Laboratories) listed. This bulk cord is designed for easy cutting, stripping, and installation for various DIY lighting projects. Suitable for indoor,, light-duty applications such as lamps and small appliances. This SPT-1, 18-gauge, 2-conductor stranded copper wire features a white thermoplastic jacket and comes on a convenient 250-foot spool.