31 Oct
2000
31 Oct
'00
1:29 p.m.
Fairly simple to determine...
Take the cover off and see how the power cord terminates. If one wire
goes to the frame, it's LIKELY 220/240 single phase. (that's what you
have at home... Runs your stove, water heater, dryer.) There may also
be labeling inside telling the power requirements. Three phase power
for an office machine is most uncommon. (And the System 36 WAS an
office machine!) Easiest way to find out is plug it in!
But then again, we ARE talking about a System 36. Just might be steam
powered! ;o)
Jim Arnott
Industrial Electrician
Dave McGuire wrote:
Sounds like 220v 2-phase. Two hots and one neutral/ground. If its
marked 20A, I believe the connector is probably an L6-20 twist-lok.
Not difficult to wire up in most US homes.
My computer room is running from two APC Matrix 5000 5kva UPSs,
which have 220v inputs and 110/220v outputs. I ran two 30A 220V
(L6-30 twist-lok) circuits from the two outer poles on my breaker
panel to power the UPSs, and everything (be it 110v like the regular
Alphas/Suns/SGIs and such or 220v for the Crays) runs from the UPSs.
Having the equipment run from dedicated 220v 2-pole breakers is
very, very nice. Definitely worth the trouble.
-Dave McGuire
On October 31, Merle K. Peirce wrote:
> I just checked ours - it's 3 prong.
>
> On Tue, 31 Oct 2000, Dave McGuire wrote:
>
> > On October 31, THETechnoid(a)home.com wrote:
> > > Last weekend I aquired a system/36 model 5360. Have not powered it as
> > > yet. The plug does not fit either of my dryer sockets but is marked
> > > 250vac, 20amp. Is this a three-phase machine? If so I think I am in
> > > trouble..... ;-)
> >
> > Does the plug have three prongs or four?
> >
> >
> > -Dave McGuire
> >
>
> M. K. Peirce
> Rhode Island Computer Museum, Inc.
> 215 Shady Lea Road,
> North Kingstown, RI 02852
>
> "Casta est qui nemo rogavit."
>
> - Ovid