I will be purchasing a flex shaft shortly (foredom Sr motor), but
don't know what voltage I should get. There's a 115v and a 230v. I
really don't know the difference between the two, except maybe the
fact that there's a difference between American and UK electric
boxes. I live in the US. Can someone help me figure this out?
Megan, it's pretty simple. You buy the type that matches your
available electric supply. Normally, in the U. S., the wall plugs are
115 volts. But 220/230 volts is also available via specialized
wiring. your electric stove, if you have one, for example, and things
like electric clothes dryers, and heavier duty industrial machinery,
often work with 220/230 volt supplies. If your workshop happens to
have a full sized bridgeport milling machine, as an example, it's
likely using 220 volts.
For the vast majority of jewelers in the U. S., though, the right
choice will be the 110/115 volt version. If you were planning to move
to europe soon, then you might consider the 220/230 volt version.
Electrically, the big difference is that by using the higher voltage,
an appliance can use the same power as it would with 110/115 volts,
but get it with half the amperage. So an appliance that might need 20
amps with 115 volts, and would thus likely overload most normal
circuits, could do it's job with just 10 amps, when using a 220/230