I just acquired one.
I looked on the miller site and if I understood the PDF manual
correctly it looks like they require a 225 amp breaker. Is this
right? I only have a 200 amp single phase service.
So, what' the good, the bad, and the urglee on this machine?
Vern> I just acquired one.
You will need at least a 100 amp breaker to run it.
You will not be able to use full power, but it will work.
We had 3 Syncro 300's at South Seattle, and I liked them when they were
The pulsers can be a bit squirrely and because the pulser is integral
to the voltage control circuits it can make the machine problematic to
It is all about age.
As long as the high frequency capacitors are happy, and the spark gap
is clean, they work very well.
Most of the repair parts are still available.
The foot pedal uses a 5 pin connector, but it has the same resistance
as modern Miller foot pedals (1Kohm) that use a 14 pin connector.
I would open up all the panels and check all the wires to make sure
they are still viable without cracks in the insulation or loose
Blow out any dust.
I'm actually sitting on a couple of Syncrowave 500s. I bought one on
ebay some years ago. Soon afterward, I found an even better deal on
an even better machine with more features. The manuals on those
machines stated that they consumed 204 amps at full output. However,
recently, upon reviewing the documentation I saw another reference to
"fully unbalanced" tig settings for "maximum penetration". Under this
setting the machines pull substantially more than 200 amps.
Furthermore, I noticed for the first time, that they require a 300 amp
Since I only have a 200 amp, single phase service, this is obviously a
problem. That's why I bought the Syncrowave 300. According to the
same documentation it requires a 225 amp breaker. I assume this means
that I could hook the welder up to the 200 amp mains and weld at
nearly full amperage. Not that I would reasonably expect to ever need
to do so.
Is the above consistent with your experience and thinking? Thanks,