Four wire dryer hookup
from the wall. Digital Vision./Digital Vision/Getty Images. An appliance repair person or electrician can quickly update the dryer by adding a ground screw in the correct location. Due to changes in the, national Electrical Code (NEC), wiring for electric clothes dryers changed in 1996. UL-listed, 30-amp, 4-prong dryer cord, strain-relief fitting for 4-prong cord, adjustable pliers (optional). The outer two screws should be yellowish brass. Therefore, the dryer's neutral was tied to the ground connection on the metal case of the dryer. Skip to main content. Trace the dryer cord to where it enters the dryer housing. Remove the screws that hold the plate on the dryer housing and remove the plate. This configuration did not include a dedicated ground connection; the dryer's equipment ground (case ground) was connected to the neutral conductor in the dryer cord and the household circuit.
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For example, if you buy a new dryer set up for a 4-prong cord, you can replace the cord with a 3-prong version to fit a 3-slot receptacle in your home. What Is the Difference in Wiring? If there are any burned or charred marks on the terminal block or any corrosion around the screws, the appliance requires professional attention. Most dryers accept four-prong cords, even when an older cord was original to the unit. This is, I assume, used to ground the case and prevent shocks when touching the exterior of the dryer. Small cup or container, tips, vacuum out dust and lint inside the dryer housing and vent hose before putting the dryer back into service. To do this means following a procedure similar to this project, but in reverseremoving the 4-prong cord and installing a 3-prong cord. The key difference in the wiring configuration between 3-prong and 4-prong is that with the older setup, the 3-prong cord has only two hot wires and one neutral wirethere is no separate ground wire. Also, all newly installed dryer receptacles must now be 4-slot. I can't tell where the green wire is connected. If the ends touch together or touch you, they'll create a potentially lethal short circuit. Remove the old dryer cord and set it aside.
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