Kill A Watt

Kill A Watt

Electricity Usage Monitor [wattmeter]

Device - 2001
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With the high cost of electricity this winter, the Ottawa Public Library (OPL) is offering a valuable tool allowing consumers to monitor their electricity consumption and make smart energy choices.
Les coûts éléves de l'électricité cet hiver amènent la Biblioth̀eque publique d'Ottawa (BPO) à proposer un outil précieux pour permettre aux consommateurs de surveiller leur consommation en électricité et de faire des choix énergétiques éclaires!
Publisher: [New York] : P3 International Corp., c2001.
Branch Call Number: WATT
Characteristics: 1 watt meter + 2 sheets + 1 specification card.
1 watt meter + 2 feuilles + 1 carte de spécification.


From the critics

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Oct 25, 2013

What an excellent service! The tool itself helped me identify a few items around my home that need fixing. I used a small extension cord to help things along..

The tool was simple to use, just plug in and select the Watt button (the middle one). Instantly I could find what items in my home are in use when I think they're off (vampire load).

It's helped me make some adjustments, and without a $25-$40 purchase I'd have had to otherwise make to purchase Kill-a-watt.

Aug 22, 2011

I only see elibr's comments so thought I would add a few:

I didn't see an need to read the instructions because it seemed intuitive to me. Plug it in the wall and plug your item into it. It only displays one parameter at a time. 5 parameter buttons but 3 buttons toggle two parameters. In the end, 5 buttons = 8 parameters you could display one at a time. Those 8 are Volts, Amps, Watts, Hz, KWH, Hours, VA and PF.

To the those that are curious PF = Power Factor and VA = Volt-Amps.
Watts= VA x PF.

Ideally PF is closer to 100%. But I see my fluorescent lamp is poor and in the 50/60 percent range.

But you don't pay hydro for a poor PF so if your objective is cost don't sweat it.

As a user you can only control hours (and therefore watt-hours) that you have something turned on. Or, if it has multiple settings like fan speed or desired temp or humidity.

elibr's complaint about enough time to be statistically valid is true for some loads and not others. A light or fan doesn't really change over time for a given brightness setting or fan speed. Something like a dehumidifier or something controlled by a thermostat will vary significantly based on humidity and temperature.

The unit will keep long term data over time but lose it if the power is disrupted.

By over-sized plugs I assume elibr means 230V devices like a dryer.

It is annoying that the unit blocks the other outlet. I tried to measure a fan and the other plug was a light. I had unplug the light to measure the fan and use a flashlight to read the gauge because the light was unplugged.

Nice and cheap otherwise.

Most of the the nice-to-have features listed don't exist to my knowledge so the library can only buy what is available.

Mar 23, 2011

2011-Nov-22 Update- loan period number 3- I suggest you borrow 2 or 3 pairs at a time, each of 4 or 6 1-week loan items which are renewable only once and only if no-one else wants to borrow them at that time. Plus, unless you don't mind 50% restriction to the usability of your wall outlets in using these Kill-a-Watt meters, have a few ground-plug (3-prong) extension cords at the ready, as each plugged-in Kill-a-watt meter will cover the full face of your outlet, or, one side of a regular 2-sided extension cord. just FYI. o good, s-one else is alive and reads out there, Hello! thanks for addendum-appendage-correction-help-sign of life, etc.
u have to pick this up at desk, as if it were a Multimedia item -

this is second time I borrowed this, couldnt really figure it out, or, more likely, lost patience in reading instructions vs looking at dead grey box -

Suggest lending period be at least 4 weeks - u need to keep some stuff plugged in over numerous days in order for it to cycle on and off depending on your usage of your appliances, and these items, as well as those which use Phantom Load, really need that longer period to be able to extrapolate use to a yearly figure, AND to get data large enough to be statistically valid and mathematically accurate -

one example, in fact this is what I used up my week's worth of Loan period on, I measured use of electricity of my new Instant (Tankless) Gas Water Heater - this thing cycles on and off all day, whether Im even near a tap or not! so it was useful for me to validate my data, against EnergyStar etc, claims and stickers (electricity counts, not just gas usage, in determining total energy cost, so not 1-to-1 comparable to electricity cost, say, of using an electric hot water tank).

WISHLIST - this meter be wireless, user-friendly ( ie intuitive, record data in its own storage unit for consumer display at c's convenience) - AND ESPECIALLY cuz my Biggest electricity guzzlers have oversized plugs for which this puny little aged-technology thing is of nil value. Cant we spend Library funds on better tools like this to rent, instead of cluttering bookshelves with dribble like the newest Harlequin Romances (I mean, how many versions of "Mary meets Joe and gets slightly excited" do you need to buy? People should just start rereading the old ones if they're too bored, and prefer not to turn to the Classic fiction bookshelves .....

end of vent. (no electric energy used, some perhaps produced!)(hot air???!)(warm!) : )

Age Suitability

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Apr 19, 2014

Takin thinks this title is suitable for 13 years and over

Oct 25, 2013

gandalf_grey thinks this title is suitable for 13 years and over

Mar 23, 2011

elibr thinks this title is suitable for All Ages


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Nov 22, 2011

" Get Thee to an Outlet ". " Go Forth, and Measure Kilo-Watt-Hours ".


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