Primary Wire

Del City offers a wide variety of electrical and automotive wiring, including the commonly used primary wire. Many original, repair, and replacement applications standardly use primary wire, or GPT wire, within their installs. Primary wire is an insulated wire that is highly resistant to grease, oil, and acids. This resistance makes it ideal for automotive, truck, trailer, marine, construction, agricultural, and many other applications. Del City's primary wire selection found below is a single conductor primary wire encased in polyvinyl chloride (PVC) insulation, giving the wire a smooth and durable surface. This smooth surface allows the wire to be easily inserted and pulled through loom or conduit when working with wire runs or a wire harness.

Del City's primary wire meets or exceeds SAE specifications J1128 and operates optimally between temperatures -40°C to 105°C (-40°F to 221°F). Primary wire is available in multiple gauge sizes. The wire gauges refer to the outer diameter of the copper strands housed within the PVC insulation minus the insulated wall mills. The thickness of insulation may vary but the gauge size within will not. The nominal outer diameter of the wire is the total diameter of the gauge (wire strands) plus the insulation. Find a variety of primary wire gauge sizes ranging from 20 gauge (nominal O.D. = .084 inches) to 8 gauge (nominal O.D. = .208 inches). Each gauge size is offered in a variety of spool sizes from 100 feet to 6,000 feet to meet the primary wire demands of your project, application, or install. Thrifty spools of 18 gauge to 10 gauge sizes of primary wire are also available to provide short runs for smaller projects or applications. Primary wire comes in an array of different colors including: red, white, blue, green, black, yellow, brown, grey, purple, and orange. The color availability varies depending on the gauge size selected. Whether you are working on a large project or application line, or just making a quick repair, Del City offers the primary wire you need in stock and ready to ship.

Click here to see a Primary Wire Size Chart.