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Re: Wall plug is 3 prong, dryer is 4 prong...is there an...
The following link explains the wiring scheme for 3 and 4 prong power cords. I know the instructions are for converting from a 3 to a 4 prong, but if you look under the "Additional Notes" section it explains how to convert back to a 3-prong if you are currently using a 4-prong.
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Since you are asking, I would not suggest you try it. 240 volts is deadly. It would be easier to change cord to 3 prong and then add grounding wire from back of dryer to cold water pipe. The 4th prong is a ground connector, new standard for safety. Your house wiring may not be set up for it, or it might be. Unless you know what you are doing, let someone who does do it for you. Be safe pls
Today's newer electric dryers now use a 4 prong plug. If you try to relegate your new dryer to the old 3 prong hook-up that you currently have in your house, you will have issues with your dryer. Instead, I recommend you update your house's wall receptacle to the newer 4 prong terminal and keep that new dryer warranty intact. Douglas
Is it an electric dryer or gas dryer? If it's a 120 volt gas dryer, then no, you need to keep it on a 3 prong cord. If it's an electric dryer, then yes it is possible to install a four prong plug onto it. Although it isn't recommended.
The main thing you need to know is which wire is ground. From the machine, it should be the green wire. On the plug, there should be on prong that is slightly longer than the other 3. The ground has to be the first one in the wall receptacle and the last one out. So the slightly longer one is where the green ground wire needs to be wired in. The other two wires are both power so it doesn't really matter which prong you wire those wires at.
Once again I'll remind you that it isn't recommended to convert 3 to 4 prongs like that. Just be careful and make sure you aren't touching any live wires.
IF you find that you have only a 3 wire feed for this dryer (and the
reason for the 3 prong receptacle)...then you can not properly install
a 4 prong dryer cord to it. You now have 2 choices....either rewire
(assuming that it is a 3 wire supply) the entire run from the dryer
breaker to the outlet location with 4 wire (typically a run of 8/3 with
ground having a black, red, white and bare ground)and install a 4 prong
dryer receptacle to match the configuration of the new dryers
cord.....OR - you can remove the 4 wire cord and replace it with a 3
wire cord....re-using the ground strap - IF it is still in place.
YOUR FOUR WIRE CORD IS AS FOLLOWS RED,BLACK WHITE AND GREEN ON YOUR DRYER YOU HAVE FROM LEFT TO RIGHT 123 CONNECTIONS THE TWO OUTERMOST(1 AND 3) ARE HOT LEADS SO HOOK RED TO 1 AND BLACK TO 3 NOW HOOK WHITE TO 2 AND THE GREEN CAN BE ON THE TERMINAL COVER SCREW OR NOT AT ALL BUT BE SURE IT CANNOT COME INTO CONTACT WITH RED OR BLACK