[H-GEN] Re: UPS advice

[Harry Phillips]

Troy Piggins wrote:
> 
> Thankyou for your advice all. I will look into the brands you mentioned, 
> and call the commander vendor.
> 
> For the record, I only want enough capacity to shutdown the PCs
> safely, and protect them from spikes.  I think I will forget about
> the laser plotter.  If anyone is plotting during a blackout, I would
> like to see how they do that anyway.

Ok I don't know much about it but you might want to consider:
1. How long a "plot" takes to come out.
2. How often it is used.
3. The cost of a half done plot.
4. Would a user be pissed that his plot sent just before the blackout 
was only half finished

> I was just thinking about
> spikes damaging a $20k plotter.
> 

As good a reason as any. I am not 100% up on UPS's but I think there are 
two basic designs.

1. Has battery's placed across the mains that kick in when the power 
goes out.
2. The output is drawn from the battery's which are constantly recharged 
by the mains.

The first will let most of the spike through, the second won't.

-- 
Regards,
Harry Phillips