ProCo 12GA E-Cord Black Electrical Extension Cord | Model: E123-50Extension cords in black for low profile stage applications. Available in 12, 14, 16 and 18 AWG. Power Block option available in selected 12 and 14 AWG models. In 2001, ProCo recognized the need for durable, reliable cable options that are invisible to the audience (in the past, the only readily available AC cords were orange or yellow). So, with the help of a major electric cable supplier, ProCo introduced "E Cords".