SPT-1 is the same as SP-1 but all-thermoplastic, rated 300 volts, available with or without a third conductor for grounding.
SPT-1, described in relation to SP-1, is the same light-duty lamp cord but in an all-thermoplastic construction, rated at 300 volts and available with or without a third conductor for grounding. The thermoplastic build provides durability and moisture resistance, while the optional grounding conductor allows the cord to serve small equipment that requires a ground. The parallel form keeps the cord flexible for light service.
By offering a grounding option in a thermoplastic construction, SPT-1 extends the light-duty cord family to applications needing a ground. It remains a light-duty cord suited to lamps and small appliances.
In commercial and industrial settings, thermoplastic light-duty cords like SPT-1 serve lamps and small equipment, including those needing a ground, within their rating. Recognizing the designation and its options is part of identifying cord suited to the application.
Because offering a grounding option in a thermoplastic construction extends the light-duty cord family, SPT-1 serves applications needing a ground, remaining a light-duty cord suited to lamps and small appliances with the durability of its all-thermoplastic build.
At Windy City Wire, the focus on quality low-voltage cable and cord includes thermoplastic light-duty cord types like SPT-1. Supplying cord with appropriate construction, ratings, and grounding options helps customers match products to light-duty power needs in commercial and industrial settings.
SPT-1 (300 volt all-thermoplastic, optional ground)
UL (Underwriters Laboratories), which lists flexible cord types