[RE-wrenches] NEC 705.12(B)(2)(3)(c) intention

[Mark Frye]

True, but, the intent of the Code is not to always allow the 
interconnection of the maximum amount of PV power possible, so long as 
an over-current event cannot occur.

Here we see Code that prevents over-current events in all cases. I guess 
you could say that that is it's intent.

Sadly, the case you show would not be one of those allowed.

Happily, many that would not have been allowed in the past are now allowed.

This is called progress.

On 4/19/2017 4:31 PM, August Goers wrote:
>
> Right, but if we limit the load breakers to the bus rating per NEC 
> 705.12(B)(2)(3)(c), then there will never be an overcurrent event.
>
> August
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org 
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of 
> *Mark Frye
> *Sent:* Wednesday, April 19, 2017 4:18 PM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org 
> <mailto:re-wrenches at lists.re-wrenches.org>>
> *Subject:* Re: [RE-wrenches] NEC 705.12(B)(2)(3)(c) intention
>
> If your sketch shows that there are 200A of breakers in the sub panel 
> and 200A of breakers in the main, then, no, that would not be the 
> intent.  The lug kit makes the two separate bars into a single bar.
>
> Mark
>
> On 4/19/2017 3:29 PM, August Goers wrote:
>
>     Hi Wrenches –
>
>     Now that we’re in the 2014 NEC, we’ve increasingly been using the
>     NEC 705.12(B)(2)(3)(c) interconnection method:
>
>     imap://markf@mail.lmi.net:143/fetch%3EUID%3E.Re-Wrenches%3E12200?header=quotebody&part=1.1.2&filename=image001.png
>
>     This is a great way of putting lots of PV on a panel when there
>     are few loads. As long as the total breaker rating (excluding the
>     supply breaker) equals the bus rating or less, we’re good to go.
>     However, we recently ran into a panel that had a lug subfeed kit
>     installed in it.
>
>     Do you think the intention of the code is to allow something like
>     shown in this sketch?
>
>     Cheers,
>
>     August
>
>     Luminalt
>
>
>
>
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