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czeckit

11:16AM | 08/19/05
Member Since: 03/18/04
10 lifetime posts
Bvelectrical
We have been upgrading our home for a couple years and have consistently ran into the same question. When running 240V to an appliance, garage subpanel, shed, etc., do you need a ground wire in the cable or will the neutral wire work at the ground? We ran 10/3 wg uf wire to our shed and a friend told us we could have got by with 10/2 wg. Also, our stove only has a 3 wire plug but we were told you have to run 4-wire cable to all appliances now. What do you do with the extra wire, and do you hook up the white or the ground in a 3-wire plug? Thanks!!

househelper

11:41AM | 08/19/05
Member Since: 03/31/05
265 lifetime posts
Appliances that require only 240V to operate, such as air conditioners or water heaters, are wired with xx/2 wire with ground. Those that require 120/240V, such as ranges, ovens, and dryers, are wired with xx/3 wire with ground. A subpanel should always be wired with xx/3 wire with ground (there are some exceptions for detached buildings).

The code used to allow ranges and dryers to be wired with xx/2 type SE wire and if that is what you have,it is OK to leave it in place. However, if you rewire, you must use xx/3 w/g wiring for these appliances.
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