Neat 4 Prong To A 3 Prong Dryer
Installing a four prong cord to fit a four slot outlet.
4 prong to a 3 prong dryer. If you have the related but opposite situation an older dryer with a three prong cord but a newer house with a four slot outlet it is equally easy to replace an old cord with a new four prong cord that will fit a four slot outlet. The key difference in the wiring configuration between 3 prong and 4 prong cords is that with the older setup the 3 prong cord has only two hot wires and one neutral wire there is no separate ground wire. This was the reason why the code changed to.
The neutral terminal and ground screw will not have a jumper between them and each will be connected to its own cord wire.