18 awg,spt-1 wire 1.UL Listed and CSA Approved. ... designed by customer,50feet,100feet, or others. 18 awg,spt-1 wireAccessories - Wire, zip cord, 18 gauge, green, SPT-1, 1000 feet ... a rib on one conductor for polarity indication. 2.18 AWG SPT-1: 18 gauge copper. Stranding: 41 strands/ 34 gauge. Insulation ... Range: 105 degrees C. Size: Nominal O.D.: 0.104 x 0.210. 5. UL Listed and CSA Approved. Wire only ...