I have an electric dryer with a 4-wire pigtail, but our new house doesn't have the grounded outlet, so I need to change the wiring. I need to know how to ground the dryer because the owner's manual just repeatedly says to make sure it's grounded but doesn't make it clear how to do so.
Your question is a little confusing. I'm not clear in understanding if you have a 3 prong or a 4 prong wall receptacle/outlet. The green ground wire is connected to the cabinet and neutral when using a 3 wire pigtail. If you are using a 4 wire pigtail, the green ground should be disconnected from the neutral terminal and connected to the bare copper ground wire on the 4 wire pigtail.It is easier to replace the pigtail to match the outlet than to replace the outlet to match the pigtail. If the dryer is in a mobile home the local codes require a 4 wire pigtail.The wall outlet/receptacle must match the pig tail. A three prong outlet consist of Line 1, Line 2 and a Neutral. A 4 prong outlet consist of Line 1, Line 2, Neutral and a Ground. When using a 3 wire pigtail and outlet, the green ground wire remains connected to neutral. I added the general wiring installation instructions in the images below. If you do not understand the instructions, I recommend calling a qualified electrical installer.
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