[c-nsp] DC powering for 3845 router

[Frank Bulk - iNAME]

Thanks.

The manual also says to power them with 30 A circuits.  Of course, that's
not actual draw.  

I was hoping someone was going to say that Cisco has this bit of hidden
documentation that it's just 13 A per 3845 for 48 VDC fed DC power supplies,
whether you have one or two of them.  But no one has said so, so we need to
budget 26 A.  =(

Frank

-----Original Message-----
From: Justin Shore [mailto:justin at justinshore.com] 
Sent: Tuesday, September 11, 2007 6:55 PM
To: frnkblk at iname.com
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] DC powering for 3845 router

I'll take my DC amp meter to work tomorrow and check our 3845s.  I have
3 that are DC powered.

Justin

Frank Bulk wrote:
> Our installers are balking at the 19 W requirements, per DC power supply,
> for the two 3845 routers we purchased.  Since we have a redundant power
> supplies, it looks like a total of 4 power supplies totaling 76 W.
>
> Are there any shortcuts here?  The documentation, both online and printed,
> is pretty sparse about the dual-power supply situation.