[rescue] Question on V490 power

der Mouse mouse at Rodents-Montreal.ORG
Mon Aug 25 01:36:47 CDT 2014

>> [...] the specs on the machine show it as 208VAC single phase power
>> supplies only.  [...]
> [...] another option is a step-up transformer that takes the 110vac
> input and produces 220vac output

Well, 220V != 208V...

> (the V490 supplies are rated to accept 200-240vac).

Perhaps the machine the OP was talking about has non-original power
supplies?  208V is what you get between two legs of 120V-to-neutral
three-phase (ideally, 120*sqrt(3), or about 207.846, volts), so if it
really is specced for 208V, I speculate it was intended for use at a
site with three-phase power.  (I know a hosting outfit that runs much
of their stuff off 208V obtained from delta three-phase.)

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