Best Way To Measure Your System's Power Consumption - Home Theater Forum and Systems - HomeTheaterShack.com

Old 10-16-13, 04:54 PM Thread Starter
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Wayne Myers

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Best Way To Measure Your System's Power Consumption

This question popped up in a PM, now do you accurately measure your system's power consumption? I answered the best I could, which is copy/pasted below. There are probably other approaches...

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Power use is hard to measure, you have to get in series with the current flow to be accurate. I have a little Kill A Watt meter (\$30??) that you plug into an outlet then plug your equipment into it and it gives Amps, Volt-Amps, and Watts used, but that is on an outlet by outlet basis. You can use it to measure each outlet's consumption and add them up and get an accurate result, it is just a bit tedious. OTOH, that way you know each component's contribution. I'm sure there are circuit- and service-level consumption meters, but an electrician has to install one of those. There are clamp-on current meters that work without electrical contact, but that takes a) access to the individual hot wire (not the hot + return cable, the hot conductor alone - where do you get access to that?) and b) you don't know volt/amp phase relationship, so can be off quite a bit when calculating power from it. The Kill A Watt measurement approach is the best I can think of.
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Any other suggestions?
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Old 10-16-13, 05:20 PM
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Quenten

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Re: Best Way To Measure Your System's Power Consumption

That looks like an easy way to measure it Wayne. My APC S15 measures current draw in watts (in one of its menus), but when I tried to see what the draw was during normal levels, it seems that "<50 watts" is the lowest value it will display. Above that though, it gives watt by watt draw for the whole system. The most I have seen is 750 watts (that was way louder than enjoyable & with my PB-13U as well).
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Old 10-16-13, 07:23 PM
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Re: Best Way To Measure Your System's Power Consumption

I would use the Kill-o-watt meter
\$21 and very accurate.
gives you much more that just the wattage
http://www.newegg.com/Product/Produc...82E16882715001
It's \$2 off w/ promo code EMCWXWX87, ends 10/16/2013
useful for more than your theater system

W o o f e r h o u n d

Last edited by WooferHound; 10-16-13 at 07:28 PM.
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Old 10-16-13, 07:23 PM Thread Starter
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Wayne Myers

Join Date: Jun 2012
Location: Lincoln, NE
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Re: Best Way To Measure Your System's Power Consumption

Right, didn't think of a UPS, mainly because mine doesn't have a display, but many do. Thanks, Quenten.
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Old 10-16-13, 07:26 PM Thread Starter
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Wayne Myers

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Location: Lincoln, NE
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Re: Best Way To Measure Your System's Power Consumption

Quote:
WooferHound wrote: View Post
I would use the Kill-o-watt meter
\$21 and very accurate
gives you much more that just the wattage
http://www.newegg.com/Product/Produc...82E16882715001
useful for much more that your theater system
Thanks, that is even cheaper than I remembered.
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Old 10-16-13, 07:52 PM
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Tony

Join Date: Sep 2007
Location: Edmonton, Alberta, Can
Posts: 14,816
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Re: Best Way To Measure Your System's Power Consumption

Some power conditioners have voltage and amperage read outs on them like the Eathereal 1000 units that I have. For \$69 they are a great deal.

Home theater:
Onkyo 805, Yamaha YDP2006EQ, Samson Servo 600 amp
3 EV Sentry 500 monitors across the front, 4 Mission 762i's Surrounds, SVS PB13U sub, Panasonic BDT220, Harmony 1100, Nintendo WiiU
Panasonic PT-AE8000 on a 120" 2,35:1 fixed screen

Living room system:
Sherwood/Newcastle R972, Mission 765's, SVS SBS02's, A/D/S MS3u sub, Yamaha YDG2030EQ
Yamaha KX-393 Tape deck, CDC 805 CD changer, Panasonic BD60, Sony turntable PS-T20
Panasonic TC-P50ST60, HD-PVR & WDTV Live, Harmony 900

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Old 10-17-13, 06:05 AM
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Tony

Join Date: Nov 2009
Location: Chicago
Posts: 6,170
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Re: Best Way To Measure Your System's Power Consumption

Kill-a-watt is the best approach if you are trying to keep cost down and just need a reading, now if they need the PC, surge, voltage and amp, line filter etc they would need to look into something from TrippLite, Panamax, APC or Furman.

Do not go where the path may lead, go instead where there is no path and leave a trail. -Ralph Waldo Emerson
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