Re: Power Calculation Enquiry

Hi David,

Can you guide me how to do it..I have tried the power calculator but don't
seem to get it..It only has value @ 42 V for some reason I don't know. I
have a 6509 with around 4-5 modules and I need to know the input current
that it will draw based on an AC power supply.

Thanks

On Sat, Aug 21, 2010 at 9:25 PM, David Prall <dcp_at_dcptech.com> wrote:

> Sounds like you are looking at a DC Power Supply. While holding an AC Power
> Supply. The 6000W AC Power Supply has 2 Inputs. Need to rerun your
> calculations with the proper equipment.
>
> --
> http://dcp.dcptech.com
>
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > karim jamali
> > Sent: Saturday, August 21, 2010 2:12 PM
> > To: Cisco certification
> > Subject: OT:Power Calculation Enquiry
> >
> > Dear Experts,
> >
> > Regarding the power calculation for a Cisco 6509 switch I am doing, I
> > noticed that the current it requires is 44 A. However as per my
> > knowledge
> > both power supplies work in redundant mode, thus each power supply
> > should
> > have an input current of 44 A. If changing to combined mode then both
> > power
> > supplies will intake a total current of 44 A. However on the core
> > switch
> > there are two power plugs connecting into one power supply, are these
> > redundant/combined, i.e. do I have to assume that each power cable will
> > have
> > an input current of 22A so that one power supply gets the 44 A ?
> >
> > Thank You
> >
> > --
> > KJ
> >
> >
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> >
> >
>
>
>

-- 
KJ
Blogs and organic groups at http://www.ccie.net