Gunner sez: "Anyone know how big a rotary converter it would take to run a
Lincoln
Idealarc 250, 3phase welder?"

Errr, what is the HP of the Lincoln Edealarc 250, 3phase welder? It'd take
a rotary made from an idler motor of at least 1-1/2 x the welder HP. More
would be better, esp. if you weren't too careful with the caps.

Bob Swinney



"Gunner" wrote in message
...
On Wed, 11 Aug 2004 03:49:23 GMT, Ecnerwal
wrote:

In article ,
"mongke" wrote:

Finally I got hold of an arc welder. It has of course wiring for both
110v
and 220v. Now there is some advantage to use one or the other? I can
get
up to 50 amps for 110v. I have also 208v 3 wire 3 phase. Can one get
(almost) 220v from there? I assume not as it would be two phases and
not
one phase + neutral.

208 is not 220. So use the 110 hookup. Connecting 208 to 220 equipment
is usually a recipe for unpleasantness, up to and including magic smoke
release. If you keep an eye out, you might well find a good deal of (and
on) 208V 3 phase equipment, which is designed for that voltage and hard
to sell on the used/hobby market since many home/hobby shops (and some
commercial shops) do not have access to 3 phase.

If you have a choice of 110 or 220, use the 220.


Gunner

"There is no difference between communism and socialism, except
in the means of achieving the same ultimate end: communism
proposes to enslave men by force, socialism - by vote. It is
merely the difference between murder and suicide."
- Ayn Rand, from "Foreign Policy Drains U.S. of Main
Weapons"