[j-nsp] EX8200 power supplies taking down an entire 208v circuit

[Morgan McLean]

I don't know...I have citrix devices, MX80's, SRX650's, SRX3600's,
EX3200's, etc in the same cabinet. The only devices with power supply
problems are the EX8208's.

I can try to investigate upstream, not sure how much info I'll get. Its
Equinix SV4 in sunnyvale, so its a fairly decent facility. Nice APC
strips...no other issues.

Morgan

On Tue, Mar 13, 2012 at 11:58 PM, Brent Jones <brent at brentrjones.com> wrote:

> On Tue, Mar 13, 2012 at 11:39 PM, Morgan McLean <wrx230 at gmail.com> wrote:
>
>> Hi everyone...
>>
>> I have a troubling problem. We run a couple EX8208's, and have a mix of
>> 1200, 2000 and 3000w PSU's in use. So far within the past ~60 days, we
>> have
>> had 2 out of a total of 12 PSU's running have a failure. Unfortunately,
>> thats not the problem.
>>
>> The problem is, when these PSUs die, they're taking out our entire
>> circuit.
>> A 20A 208v circuit, completely popped. Is this normal behavior when a PSU
>> dies? We've had plenty of other units' PSUs go bad, and never experienced
>> something like this. Its been different circuits in our two network cabs,
>> and both weren't very loaded up last we checked before they popped.
>> Usually
>> just a couple amps worth.
>>
>> Any ideas?
>>
>> Thanks,
>> Morgan
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>
> Certainly strange, I'd probably look at the breakers or fuses on the
> cabinet distribution first.
> I've seen different types of breakers have different reaction time to
> sudden loads.
> Could also be an upstream problem causing the EX's power supplies to fail.
>
> --
> Brent Jones
> brent at brentrjones.com
>
>