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Anyone know of a 240v power meter?

Discussion in 'Model S: Battery & Charging' started by Seegem, Feb 12, 2013.

  1. Seegem

    Seegem Member

    Joined:
    Sep 15, 2012
    Messages:
    163
    Location:
    New York City
    Hi,

    my manhattan parking garage is installing a 240v outlet for me. They've asked me to source a power meter (to bill me for my usage). Has anyone any experience with a model or device to recommend?

    thanks!

    mark
     
  2. tdiggity

    tdiggity Member

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    Oct 3, 2012
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    722
    Location:
    Bay Area, CA
    Try calling the electric company.
     
  3. Seegem

    Seegem Member

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    Location:
    New York City
    Gee, thanks. I was going for the non-obvious and non-$5,000 option ;)
     
  4. arg

    arg Supporting Member

    Joined:
    Aug 22, 2012
    Messages:
    919
    Location:
    Cambridge, UK
    Since this is just for private accounting between yourself and the parking garage, how about something like this:

    http://www.efergy.us/index.php/usa/products-usa/elitev3-monitor-usa.html

    Cheaper and simpler than a real in-line meter, and they can even put the display unit in their office/kiosk for easy reading.

    Not quite as accurate as a 'real' meter (though pretty close), but they will presumably be marking up the cost of the power anyhow so the odd 1% here or there won't matter.
     
  5. Seegem

    Seegem Member

    Joined:
    Sep 15, 2012
    Messages:
    163
    Location:
    New York City
    Thank you. I'll look into that one and this one:

    Single-phase energy meter for 120/240 Volt, 3-wire 60Hz EKM-25IDS-N v.2
     
  6. MikeK

    MikeK R#129, TSLA shareholder

    Joined:
    Jun 29, 2012
    Messages:
    1,133
    Location:
    San Francisco Bay Area
    I use an eMonitor from PowerHouse Dynamics to monitor the loads on all my circuits, including my EV charger. It's probably overkill for your specific purpose, but it's certainly less than $5k. ;-)
     
  7. jaanton

    jaanton Roadster NA #1026

    Joined:
    Jun 25, 2010
    Messages:
    321
    Location:
    Oakland, CA
    I've been looking at that same meter. I have an Energy Detective for the whole house, but I don't like the software it uses. The EKMMetering looks more raw and better documented. I might write some software for the EKM meter if it seems like a quality device. One thing I wonder about EKM-25IDS-N is that I do not see a neutral actually connected to the meter. Without it, I don't see how that meter can accurately measure and imbalanced load on one of the legs. Not an issue for the Tesla which would always be a 240v load, but I'm curious.
     
  8. fengshui

    fengshui Member

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    Messages:
    421
    Location:
    Santa Barbara, CA
    They should contact the power company. Many have rules and regulations around sub-metering.
     
  9. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
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    13,469
    Location:
    Texas
    Look at the RV park equipment sites. They have reconditioned meters for not very much.
     

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