... designed by customer,50feet,100feet, or others. 18 awg,spt-2 wireAccessories - Wire, zipcord, 18 gauge, white SPT-2, 1000 feet, spool 1 ... .Standard insulated, two conductor white cord with a rib on ... one conductor for polarity indication.2.18 AWG SPT-2: 18 gauge copper. Stranding ...