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Anyone know of a 240v power meter?

Seegem

Member
Sep 15, 2012
163
0
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
 

arg

Supporting Member
Aug 22, 2012
1,792
1,744
Cambridge, UK
I was going for the non-obvious and non-$5,000 option ;)

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.
 

Seegem

Member
Sep 15, 2012
163
0
New York City
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.

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
 

MikeK

R#129, TSLA shareholder
Jun 29, 2012
1,133
1
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. ;-)
 

jaanton

Roadster NA #1026
Jun 25, 2010
323
7
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.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Mar 8, 2012
19,541
21,787
Texas
Look at the RV park equipment sites. They have reconditioned meters for not very much.
 

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