downsizing main breakers [RE-wrenches]

[Ray Walters]

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HI All;

Just another possible problem with feeder taps:
While on batteryless grid tie systems, the power is only backfeeding the 
line back to the meter, therefore reducing the total amperage on the 
feeder. But on a battery back up system, this tap may be carrying many 
of the loads as well, thus possibly exceeding the ampacity of the 
feeder. Anyone run into this problem  with battery based grid tie?

Ray


Barbra Kerr wrote:

>Jeff
>
>I personally prefer taps ahead of the main.  However, please know that many jurisdictions will require ONLY manufacturer authorized taps, which many manufacturers do not have as an option on smaller services.  OR, the building department/utility will allow an independent UL testing company to inspect/test the taps and overall installation, thereby
>Providing a UL stamp.  This can cost as little as $5OO or more depending on the size and age of the service.  This applies to both resy and commercial systems.
>
>Barbra K Kerr
>Stellar Power Heating
>
>
>-----Original Message-----
>    From: "Jeff Oldham"<starpower4u at juno.com>
>    Sent: 10/20/06 11:23:19 AM
>    To: "RE-wrenches at topica.com"<RE-wrenches at topica.com>
>    Subject: RE: downsizing main breakers [RE-wrenches]
>    
>    
>    
>    Hey Wrenches, why do you have so much resistance to line taps placed between the meter and main breaker? This is so easy and cheap and takes very little time, although I don't care for them, there are even self-piercing taps that you don't even need to break any connections for or have a service disconnect to install.
>    Personally, I would never down size a main breaker (and thus my customers service size) to get around the simple fix above.
>    
>    
>    From the Solar, Wind and Hydro powered office of Regererative SOLutions
>    Jeff Oldham
>    
>    
>    
>    ________________________________________________________________________
>   
>


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