My definition of "modest shop work", is a few power tools for home projects.
Even at that, you're still probably going to be tripping a 20 amp breaker.
If you need several pieces of 230volt equipment, then do it right.

"WConner" wrote in message
news:JMhvf.6482$Yc2.4004@trnddc04...
A son has a garage that is about 25 ft. from his house. Previous owner ran
a
direct burial 2-12 w/ground wire to it. It is a 20a 110v circuit. I am
wondering about changing it to 220v by using the ground wire as the
neutral,
white wire to one side of the breaker box, black wire to other then
putting
down a new ground rod out from the garage and running a new ground wire
from
it for ground in the garage making 220v and 110v available so he can do
some
modest shop work??

Thanks for any help,

Walt Conner