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How do I ground an electric dryer with a 3-wire pigtail?

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.

Dryers , Washers
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1 Answer from this member:
Joey S
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.
by Joey S Earned 82,123 community points in Washers
July 13th, 2009
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