[RE-wrenches] meter main combo with multiple main breaker spots and NEC 705.12

[Jason Szumlanski]

Replacing the 50A breaker with a backfed solar breaker would work if your
relocate that load (which may require load calcs to reconfigure the service
disconnects, which is what you would be doing).

You are just limited to the rating of the service on the solar
interconnection, so 125 / 1.25 = 100A would be your max inverter output
rating.

Jason Szumlanski




On Wed, May 25, 2016 at 5:55 PM, August Goers <august at luminalt.com> wrote:

> All –
>
>
>
> I’ll chime in to my own post with this article from Solar Pro:
>
>
>
>
> http://solarprofessional.com/articles/design-installation/residential-supply-side-interconnection?v=disable_pagination
>
>
>
> See “A Simpler Supply Side” – I’m fairly certain that we can install up to
> 125 A of solar on this panel since the connection would qualify as a supply
> side connection. However, I’m still curious about main breaker limitations
> for these types of panels.
>
>
>
> Best, August
>
>
>
> *From:* August Goers [mailto:august at luminalt.com]
> *Sent:* Wednesday, May 25, 2016 2:39 PM
> *To:* 'RE-wrenches'
> *Subject:* meter main combo with multiple main breaker spots and NEC
> 705.12
>
>
>
> Hi Wrenches,
>
>
>
> We have a 125 A meter/main combo with space for up to 6 breakers (or three
> two-pole breakers). Here is a Google photos link:
>
>
>
> https://goo.gl/photos/kftDerEESg3giLrB9
>
>
>
> The configuration is such that the busing is unprotected and connected
> directly to the utility feeds through the meter bus. I want to install into
> a subpanel fed by the 100 A breaker to the right. Does anyone see a reason
> why I can’t install up to 100 A of solar? What if we tied the solar where
> the 50A two pole breaker currently is? Lastly, does any code savvy
> individual know what limits, if any, there are to the sizing of main
> breakers in this panel?
>
>
>
> Cheers,
>
>
>
> August
>
> Luminalt
>
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