re a question about vac outlet wiring in article apr mtu edu cmwolf mtu edu engineer by day asleep by night writes dave martindale dave imax imax com wrote they require two separate grounds one ground goes to the ground pin of the outlet and the other ground wire is connected to the outlet s mounting tabs and thus grounds the box and faceplate screw and metal faceplate if any i thought the ground was connected to the metal frame on the socket christopher wolf electrical engineer cmwolf mtu edu remember even if you win the rat race you re still a rat not in isolated ground recepticles usually an unusual color such as orange or yellow often used in low noise low leakage applications as mentioned earlier in the thread richard dell
