Mike rock wrote:
If your dryer has a four prong plug then you're going to have to change
it to a three prong plug/cord and learn something about proper appliance
grounding.


You can check if the existing wire has a ground (EG 10-3 with ground).
If it does, then you can put a 4 prong outlet. Just make sure it is
wired right at the panel.


Agreed. I made the assumption that if the OP's luck was anything like
mine that socket would have been wired with 10-3 sans ground and the
"cold" third wire was connected to neutral/ground at the breaker box.

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10e12 furlongs per fortnight.