[RE-wrenches] Enphase grid tie question

[Chris Mason]

I would use a 200A sub panel with 8 x 25A breakers to accumulate the PV
output, as I doubt you could install 8 3Ph breakers in your main panel, and
why would you want to?
You shouldn't need to observe the 120% rule for the main breaker on the
main panel as there are no loads. Same for the panel rating.
The main panel would need a 200A breaker for the PV input and 120% comes
into play. Be careful that breaker is rated as bi-directional.

Chris


On Mon, Jun 25, 2012 at 10:39 PM, Jesse Dahl <dahlsolar at gmail.com> wrote:

>
> All,
>
> I'm looking for ideas on the electrical integration of the following
> system:
>
> 800A service
> PV system employing enphase 215W inverters broken down into 8 output
> circuits.  Each circuit will be 208V 3 phase 20A.
>
> The question is on how to grid tie this.  My first thought is a sub panel
> for PV intertie only.  I saw a similar diagram on the enphase website,
> using 5 circuits and a 125A panel....
>
> What are people doing in situations like this?
>
> Thanks as always.
>
>
> Jesse
> Sent from my iPad!!!
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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