... Please consider adding an inexpensive power monitor such as the EKM25-IDS
on the EVSE charger circuit when it is installed...
I'm scoping an EVSE install. This is a great nugget.
Now a newbie question: how can one obtain a historical log of EVSE usage? It could be a feature of the meter or the EVSE unit. Do existing products include such capability? (How about the Open EVSE platform with, in theory, I could build?)
I installed an EVSE unit for my wife's Volt, and put a standard electric meter inline to monitor energy usage (total cost of about $61). It may not be fancy, but I'm able to monitor electrical consumption (and therefore calculate battery efficiency) by periodically recording readings in Excel and crunching the numbers that way.
I did a full write-up on the install, which would be conceptually the same for any consumer EVSE: http://s.co.tt/blog/blog/2011/06/07/ins ... -phase-ii/
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Of course, you could go the more expensive route and get something with a network interface that records data automatically, and provides graphs and other info. E.g. TED 5000: http://www.theenergydetective.com/ted5000
" onclick="window.open(this.href);return false; or Powersave Genius: http://www.bestpowermeter.com/genius-en ... -ct-clamp/
" onclick="window.open(this.href);return false; (I've never used either and can't speak to their effectiveness).
I am surprised that there are no consumer EVSE units with so much as a numeric display. You'd think they would have taken a hint from the petrol world and included a per-charge KWh meter at least, akin to the number of gallons displayed on every gas pump.
Please go easy on us for being a Volt household -- I've been lurking on here because I'm considering a Leaf for myself!