Originally Posted by roger1
No it does not. In the case of a dryer using 10-2 wire, a neutral is not used.
Where 10-2 wire was used (old code) the receptacle and plug should be 3 prongs. In new installations (10-3 wire) a 4 prong receptacle and plug are used. You shouldn't install a 4 prong receptacle when 10-2 wire is used. (It would work, but it's the wrong thing to do.)
If you have a 3 prong receptacle and a 4 prong plug on a new dryer, your dryer cord should be changed to a matching 3 prong plug. Your big box hardware stores will carry the cords.
The outlet I installed in the garage is a 3-prong, 50A, 250V (6-50R). The directions say the third pin is ground. I wired this pin to the neutral wire and it seems to work fine.