Southwire(R) SIMpull THHN(R) copper conductors are made with soft-drawn copper. Sizes 14 through 4/0 AWG use a combination-unilay stranding, while 250 kcmil and larger sizes use a compressed copper stranding. The wire is covered with a tough, heat and moisture-resistant PVC insulation with an overall nylon jacket utilizing SIMpull(R) Technology. Available in black, white, red, blue, purple, green, yellow, orange, brown, and gray. Also available in striped configurations. Some colors are subject to economic o