[c-nsp] Multiple power supply failures. Advise needed

[Seth Mattinen]

Michael Ulitskiy wrote:
> Hello,
> 
> We have a very strange problem. We have recently changed colo-space provider and since that 
> we had 4 power supply failures in all kind of cisco equipment within 2 month period.
> According to colo provider we're receiving "clean" power backed up by UPSes and generator.
> We're currently have 4 20-amps circuits with APC managed PDUs in them and power supply failures 
> happened in 3 of them, so I can't blame it to one specific circuit or PDU.
> There was no environmental warning in the logs of any cisco devices. 
> I'm completely out of the clues. I'm going to bring it up with our colo-space provider, but I'm afraid
> they'll need some proof or pointers.
> Does anybody have any ideas what could be causing this and how I can monitor the specific conditions?
> Thanks,
> 

If you're having power supplies cook off like that for no apparent
reason, I'd get an independent analysis of the power being fed to my
outlets.

~Seth