NEMA 5-20 Extension Cords 20A 125V are available in standard molded lengths, custom low volume mounted lengths and colors, and custom high volume lengths and colors. Standard jacket type is SJT. Rubber jacket is available upon request. BLUE, GREEN, YELLOW and other colors available upon request. Nema 5-20P, NEMA 5-20R, NEMA 5-20P/R.