CT Meters (kWH Meter)

Ask and you shall find...Check out: http://www.electricsubmeter.com/emon/index.htm?gclid=CKK_naWctZMCFRaVggoddiSUCg

This site has what you need. I installed this companies remote meters on a large ex-military facility and I remember that these were an option. When installing make sure you follow their instructions exactly or they will not work.

Hope that this helps.

Please don't forget to rate this post.

The emon meter uses a trasnducer (0 to 2VDC). Most CT meters are using O-5A AC. I'd like to stick with standard CTs is possible. Thanks for the input, if standard CTs don't work out, we at least have a way of accomplishing what we need to.

What you must do is wire the line and load side cts in parallel, of which will subtract the amount of current flow being sent up to the second floor, thus providing on your meter the amount of current being used for first floor.. Polarity must be obeserved for correct function..

This is the same methodology applied to partial differential circuits (Poor Mans Differential).

Download this doc ... page 246 discusses partial diff.

http://www.geindustrial.com/pm/notes/artsci/artsci.pdf

Hi,kjbaudry!

If you want to sub-meter the individual units just to find out who is over-using their electrical share, you can get hydro to put a 'usage meter' on each --one at a time-- beginning with your largest suspect, and you won't have to install anything.

If you want to charge the tenants for their electrical usage without going through your hydro provider, they can refuse because you're not licenced as an electricity provider. You might be able to get licenced, but you might still have to get a sub-licence from hydro since you don't (do you?) provide the electricity from your own source.

If you wish to change things at your hydro provider so you can charge them for electricity, then either a licenced electrician or hydro itself can install the meters, and hydro will adopt the changes as separate customers.

If you want to charge them separately for electricity and they had originally rented from you with electricity being provided in the rent, good luck. That represents a change of contractual (written or spoken-makes no difference...the evidence is in the history of the rental) arrangement; and the bottom line here is if you want to make contractual changes, it opens the contract for them to make changes as well, such as lowering the rent, etc. This will not apply as you make changes on empty apartments and begin charging new tenants for rent plus electricity, etc. Meanwhile, the existing tenants might remain exempt from that additional cost, even though the meters are installed. As you watch and pay for existing tenants' electical useage out of your own pocket, try to retain your sense of humour, as you will not be entitled to discuss their electrical use with them officially (it's their private information), only in passing and in general terms.

So before you go to the time, trouble, and expense of installing those meters, be certain that it will pay you to do so.

Good luck,

Mark