dpb wrote:
....
Actually, this might be worth consideration of a single to 3-phase
converter if this is intended to be commercial shop. In particular I
can foresee additional equipment down the road if you're really going to
be here a while...

Just a thought if you can take a couple of days to work this out and
consider longer term...

Well, on reflection...

First, I was thinking of this planer being "old iron" and not new, when
it finally dawned on me the Shelix head obviously pretty-much
disqualifies that...

Second, also on reflection, the 3PH would cut down the wiring required
from the location of the converter to the motor/planer, but given the
arrangement you outlined it might still require the long run of large
capacity to supply it if you couldn't locate it near the service entrance.

I did go look at the Oliver Machinery site to see what I might learn,
but the spec's published there aren't as complete as what you've
provided, unfortunately, so still some question as to what the overall
requirement really is, precisely.

I'd probably shoot off a request to them (Oliver). If it's an
American-made motor (I don't know what Oliver is using these days and
their spec's didn't say), you could also contact the manufacturer for
clarification of the plate ratings. If the electrician is at all
experienced in other than simply household wiring, he should be able to
tell you what code requirements would/will be before making final decisions.

In just a quick lookup from my "Wiring Simplified", for a 7.5 hp motor
recommends #6 Cu wire for a maximum distance of 110 ft (one way) for 2%
voltage drop. Longer run would need large ampacity wire of course, and
if use Al for cost, even larger.

I did a quick calculation and 7.5 hp is theoretically 25A at 220V.
Assuming 80%, that is still "only" 32A so still a little pessimistic at
38A nameplate it would seem for running draw. I'd try to find motor
manufacturer, probably.

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