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-   -   Seperate metering for AC question (http://www.diychatroom.com/f18/seperate-metering-ac-question-105971/)

WillK 05-30-2011 12:24 AM

Seperate metering for AC question
 
Okay, in the process of thinking about my service move, I thought of something... I have 100A service and am upgrading to 200 at a different location. Was planning to have the 100A panel disconencted to use it as a subpanel as part of this.

My POCO offers a program to run seperate metering for AC so they can power cycle the AC... Do these kind of programs allow you to do cord and plug window AC or is it only central air?

Currently we have no AC and we eventually plan to put in a new HVAC system, but for this year and next we'll probably be on window AC and all the outlets they'd run off are on my 100A panel, and almost everything else is off the 100A panel or wouldn't be hard to move (even in spite of the inspector, by now I think I know what he's looking for on circuits like what would be involved)

If these type programs are only for central AC then it's obviously not going to be an option for now, and I 'll just proceed as planned... If these type of programs can be used for receptacle operated window AC units I'd have to find out more, just wondering if anyone can give me an idea what these programs are all about.

Saturday Cowboy 05-30-2011 01:07 AM

Usually you are only allowed one service. Multiple meters fine, but they would have to be on the same service.

WillK 05-30-2011 07:03 AM

Thanks... didn't know how that works, web site doesn't go into that kind of detail. But it seems a little counterintuitive to put a meter on current that has already gone through a meter?

SD515 05-30-2011 08:01 AM

I've worked on some older houses in AA that have separate meters for the AC. It's only for the central air, and the 2nd meter taps off the incoming service on the line side of the first meter.

WillK 05-30-2011 10:08 AM

OK thanks, good to know... I'll just plan on asking about that when we get central air and this is going to be one that is not going to be DIY. No interest in touching anything live line side.

But it does raise the question... If it's tapping into the meter side of the cable from the service drop and I'm using 4/0 for 200 amps, and the potential for pulling 200A with the main panel exists and there is also the potential for pulling additional current for the AC... Is the cable under-rated, or are we talking about tapping off at the service drop?

Saturday Cowboy 05-30-2011 03:44 PM

the poco would come by and install another meter pan near the other one and splice it in to their service drop.


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