[rescue] Question on V490 power

Doug McIntyre merlyn at geeks.org
Mon Aug 25 01:27:36 CDT 2014

On Sun, Aug 24, 2014 at 11:02:02PM -0700, Ron Wickersham wrote:
> On Sun, 24 Aug 2014, Jawahar Panchal wrote:
> ---snip---
> > I may be able to acquire a V490 machine from a friend - however the specs on
> > the machine show it as 208VAC single phase power supplies only. As I only have
> > regular household 110vac phase-neutral circuits available, I was wondering if
> > anyone has ever run a V490 with power supplies from a V480 or such (looking at
> > the images of the power supplies shows what looks to be identical connectors)?
> > Any other possibilities on 110VAC operation?
> hi Jay,
> don't know about using V480 supplies, but another option is a step-up 
> transformer that takes the 110vac input and produces 220vac output (the
> V490 supplies are rated to accept 200-240vac).

That sounds pretty scary, I wouldn't want to be working with that kind
of amps and jury rig anything. 

Almost all homes in the US actually are fed by 240V power, single
phase.  They center tap the transformer output to bring out 120V
branch circuits, but they typically bring 240V out to electric dryers,
electric water heaters & electric ranges. yes, there are some 120V homes,
but not many. 

I'd recommend bringing in an electrician. But at 1600W top load rating,
this server needs its own dedicated power feed, which is most likely
why they made it 208V (datacenter), or 240V input. 

An electrican could bring it out to a NEMA L6-30 receptical to get a
datacenter type PDU outlet strip with the IEC C19 outlets that are
typically used for this server plugin. 

Besides the power drain, the fan noise is going to be killer in a house. 
Just some things to think of. 

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