Wiring a Dryer Receptacle & Circuit. Dryer wire cable between circuit panel and dryer plug is 10 AWG, black / red / white / bare (or green).. (or green) equipment ground wire MUST be on there designated connection. In the diagram bellow the bare (or green) ground is indicated by a green line. The bare (or green) wire should also be grounded.. Also included are diagrams of a 240 volt dryer outlet and an outlet grounding diagram. In the diagram below, a 2-wire NM cable supplies line voltage from the electrical panel to the first outlet box. The black wire (line) and white (neutral) connect to the outlet terminals and another 2 wire NM that travels to the next outlet. This repeats.
My Favorite Tool: https://amzn.to/3NIFJuO4 Wire Flush Mount Dryer Receptacle: http://amzn.to/2tOC2uEDouble Gang Cover Plate: http://amzn.to/2gRqMw5Double Gan.. Dryer Outlet Wiring Diagram: Step-by-Step Guide. When it comes to wiring your dryer outlet, it's important to follow the correct steps to ensure safety and functionality. A dryer outlet is a specialized electrical outlet that is designed to provide power to your dryer. It typically has four prongs for connecting the dryer's electrical cord.