Luke S Crawford wrote:
> Richard Chycoski <[email protected]> writes:
>
>   
>> - They don't actually trip at the rated current. Breakers have a 
>> profile, and will trip quickly if you draw significantly more than their 
>> rated current, but may sit at (or even somewhat above) their rated 
>> current for quite some time.
>>     
>
>   
>> - Breakers also get weak if tripped frequently or run near their limits 
>> for a long time. This can take a few years to happen, but it *will* 
>> happen eventually, and your customers will get unhappy if they can no 
>> longer run up to their rated current. Breakers are not meant to be run 
>> at-or-near their rated current continuously.
>>     
>
> Thanks, this is the sort of thing I need to worry about, and the thing
> I don't know much about.   exactly the info I was going for here.
>
> It sounds like what you are saying is that giving the 
> customers smaller breakers won't solve my problem of keeping
> them away from the limits on my larger breaker.   I'm still
> going to have to hunt them down and pester them about keeping it
> within 75%, and considering my goals, that might be best done
> with a metering PDU.   Hell, giving everyone a metering/rebooting
> pdu will set me back one time $200-$400 per customer, but it would
> also add a lot of value for the customer, if I gave them remote
> reboot capability.  I could charge a one time setup fee, maybe 
> waived or reduced if they pre-pay for a certain number of months.
>
>   
servertech has the capability to delegate access to particular ports for 
particular users for remote reset. You could give each user permission 
to reset their port and consolidate to a larger PDU. You could also set 
warning thresholds to send to your pager through your monitoring system 
which collects SNMP traps. (it also has an API so you could hook-in to a 
web form if you want to code it yourself and manage what they see based 
upon their clientID or such)

Geist may have a less expensive, more customizable option to suit your 
needs. You spend a little more upfront for the larger rackmount pdu, but 
certainly not $200 per user.

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