We have s maytag mdet336aym. The power cord plug does not fit our wall outlet. A person at Lowe's said we could use our old one. It has four wires: green, white, black and red from a whirlpool maybe 15...
As I understand you, you have a 4-wire receptacle in the wall and have just acquired a used dryer, that has an older, 3-wire cord attached. You need to change the dryer cord to connect to the existing 4-wire receptacle in the wall. (Dryers sold new, retail do not come with a cord attached so I assume that this must be a used dryer with an existing cord).
If this dryer has a 3-wire cord attached, it MUST be replaced with a newer 4-wire cord, per the National Electrical Code, as you have a 4-wire receptacle. (However I see no reason that you could not use your existing 4-wire cord from your soon-to-be-replaced dryer, if it's still in good shape).
In older dryers, wired with an existing 3-wire cord, there is usually a metal link provided between the center lug (the neutral lug) and a ground connection on the metal chassis. If it's present, this link MUST BE REMOVED WHEN CONNECTING A 4-WIRE CORD. This is very, very, very important.
The reason is, under a fault condition, current could be carried by the neutral conductor (in a 220-volt circuit, the white wire carries the neutral or unbalanced current. There is no neutral in a 120-volt circuit, even though some people think there is).
The presence of this current can be shunted onto the metal frame of the dryer, making it hot to earth ground (until the circuit breaker pops) and providing a possible shock hazard to a person touching the dryer). Removing this link, removes this potential hazard.
When wiring a 4-wire cord, the white wire in connected to the center lug, the two black conductors (could be a black and a red) are connected to either of the lugs on either side of the center lug, and the green conductor is connected to the metal cabinet. (Once you have the metal junction box cover removed from the dryer, you will see a screw driven into the metal cabinet provided to connect the green wire).
Again, when using a 4-wire cord, there must be no connection between the metal cabinet and the neutral connection through the use of a metal link. It must be removed and discarded.
Feb 09, 2018 |