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  1. #1
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    Default kill a watt power usage meters in NZ

    Hi
    Is anyone aware of any 'kill a watt' devices for the NZ market? They are basically a small watt meter that plugs into the mains power, and then you plug your device into the device. And LCD readout tells you how much power it is pulling from the socket.

    I'd like to get one so I can find out how much power my PC, monitor and other appliances are really drawing.

  2. #2
    Senior Member pctek's Avatar
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    Default Re: kill a watt power usage meters in NZ

    wipe your paws.

  3. #3
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    Default Re: kill a watt power usage meters in NZ

    There's a bunch of others on Trademe that does basically the same stuff.
    Meh....

  4. #4
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    Default Re: kill a watt power usage meters in NZ

    I've got an EMA-1 that looks like the Jaycar one but cost half the price from the local hardware shop. It gives unbelievably low wattage readings on the PC and monitor, which I suspect is due to their switch mode power supplies distorting the values somehow
    On stuff like heaters it's OK.
    Also, it won't register anything under 5 watts, so can't be used to check standby usage for many modern appliances.

  5. #5
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    Default Re: kill a watt power usage meters in NZ

    Quote Originally Posted by seltsam View Post
    I've got an EMA-1 that looks like the Jaycar one but cost half the price from the local hardware shop. It gives unbelievably low wattage readings on the PC and monitor, which I suspect is due to their switch mode power supplies distorting the values somehow
    On stuff like heaters it's OK.
    Also, it won't register anything under 5 watts, so can't be used to check standby usage for many modern appliances.
    A decent wattmeter would have to do True RMS readings to give an accurate reading on a SM power supply. Do any of these cheapies specify they are True RMS?

  6. #6
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    Default Re: kill a watt power usage meters in NZ

    Quote Originally Posted by rumpty View Post
    A decent wattmeter would have to do True RMS readings to give an accurate reading on a SM power supply. Do any of these cheapies specify they are True RMS?
    Lol I just made a search on tm and this was the first compatible result:

    http://www.trademe.co.nz/Business-fa...-191606494.htm

    Screw that!
    Meh....

  7. #7
    Senior Member Strommer's Avatar
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    Default Re: kill a watt power usage meters in NZ

    I have one of these from DSE. $25. Works OK.

  8. #8
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    Default Re: kill a watt power usage meters in NZ

    Quote Originally Posted by Steve_L View Post
    I have one of these from DSE. $25. Works OK.
    Identical to mine.

  9. #9
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    Default Re: kill a watt power usage meters in NZ

    Quote Originally Posted by seltsam View Post
    Identical to mine.
    I'll drop by DSE tomorrow and pick one up then.
    Meh....

  10. #10
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    Default Re: kill a watt power usage meters in NZ

    Are the $25 DSE ones the same as the Jaycar ones? They look externally similar, but I'm wondering is the accuracy the same?

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