The line was not in use and does not have an outlet it is a 3 wire line whiteblack and bare copper wire. The 4 prong dryer outlet wiring diagram above is ran with a 103 with ground cable.

220 Outlet Wiring Diagram Wiring Diagram
Dryer outlet wiring diagram. There was no dedicated ground slot on the receptacle outlet and dryer cords had no ground wire or ground prong. As you can see there is now an added dedicated neutral. As mentioned earlier the neutral and ground are. In the to the right a 3 wire 10 awg nm cable supplies 240 volts from the electrical panel to the dryer receptacle outlet box. The ground connection is shown in this. Wiring a dryer outlet electrical question.
Two wires the red and black ones connect to a double gang circuit breaker in the panel. But if you notice both the neutral and the ground wires both connect to the same ground bar inside the panel box. Two hot wires and the third contained both ground and a neutral wire. Look for two brass screws on the receptacle and connect the red and black wires to these screws. With this sort of an illustrative guidebook you will be capable of troubleshoot prevent and total your projects with ease. I need help wiring a 240volt outlet for a dryer.
The ground is now a dedicated wire also. Before 1996 electric dryers were supplied by a dedicated circuit that had three conductors. I have dedicated line with a double pole 30amp breaker i want to use for a dryer. 4 prong dryer outlet wiring diagram you will want an extensive expert and easy to know wiring diagram. The black wire line a phase and the red wire line b phase supply the 240 volts. This system worked pretty well and is still in use in many homes today but there is more potential for electrical.
The white wire supplies neutral to the dryer receptacle. The third wire may be white green or bare and it connects to the ground bus in the panel. You need three 10 awg wires for dryer outlet wiring. Dryer outlet wiring project.