[Pc_Support] Re: Reducing Electricity Costs -- bulbs first and foremost ...

[Patrick]

On Wednesday 08 February 2006 22:28, Jason Boxman wrote:
> On Wednesday 08 February 2006 22:22, Derek Konigsberg wrote:
> > >> For the run-down on my actual power usage of machines in the computer
> > >> room, look here:
> > >> http://www.logicprobe.org/~octo/stuff/power.txt
> > >
> > > Assuming most these machines are on 24/7 how do you calculate the
> > > electric power they use per day?
> >
> > Well, electricity consumption (what you're billed for by the power
> > company) is measured in Killowatt-hours.  1 kWh is equivalent to having
> > something running for 1 hour, that consumes 1 kW of electricity.  So you
> > take the combined draw of my equipment in kW, multiply by the number of
> > hours in a day, and you have the kWh per day.
>
> What equipment did you use to measure the actual power utilization for each
> system / device?

I use a Digisnap DSA-1000, that I got at a garage sale.  I think I paid $10, 
with charger.  

You can buy a very in-expensive cousin Cen Tech (Chinese made) Digital Volt - 
Ohm - Amp Meter with LCD screen, and data hold button.  They are offered at 
HFT. $29.99 but, on sale now for $19.99.  Note the "Peak hold" feature. 
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=42397 

or, this one, $18.99, note the "Data hold" feature:  
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=42396

You'll want to buy a line splitter: $4.99  
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=92072

Be safe out there, ya hear?  Work dry, wear protective gear, if you open up 
any electrical panels!!  The Splitter makes it safe, for 120 VAC.  I presume 
most of you are doing appliance/computer measurements.

If you measure any refrigeration, freezer, or HVAC systems, be aware that when 
you shutdown or unplug, you want to wait a few minutes before turning it back 
on so the head pressure in the compressor can equalize.  

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