[RE-wrenches] AC Combiner with main breaker as system disconnect

[Jason Szumlanski]

The D222NRB General Duty safety switch is service rated. Why do you say it
has to be heavy-duty?

Jason Szumlanski

Fafco Solar



On Wed, Mar 12, 2014 at 5:32 PM, Brian Teitelbaum
<bteitelbaum at aeesolar.com>wrote:

> One big omission, in the otherwise fine Soligent white paper, is that the
> 60A minimum disconnect has to be rated as "Service Equipment". Generally
> this means a "Heavy-Duty" safety switch or Service-rated load center with
> Main breaker.
>
>
>
> I don't see why an AC breaker panel, with a Main breaker, couldn't act as
> the PV system disconnect, as long as it's Service-rated, a minimum of 60A,
> and the utility does not require an external-handle disconnect, lockable in
> the off position. Many utility companies still do.
>
>
>
> Brian Teitelbaum
>
> AEE Solar
>
>
>
>
>
>
>
> *From:* re-wrenches-bounces at lists.re-wrenches.org [mailto:
> re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski
> *Sent:* Wednesday, March 12, 2014 2:14 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] AC Combiner with main breaker as system
> disconnect
>
>
>
> Don't utter the word tap. :)
>
>
>
> See:
>
> http://www.soligent.net/documents/HappyLandings_v3.pdf
>
>
>
> We usually specify a fusible disconnect for overcurrent protection when
> grouping the PV AC combiner with the main premises disconnect is not
> practical.
>
>
>
> Jason Szumlanski
>
> Fafco Solar
>
>
>
>
>
>
> On Wed, Mar 12, 2014 at 1:31 PM, <kevin at renovusenergy.com> wrote:
>
> I am trying to determine whether an AC combiner panel (for multiple
> inverter outputs) with main breaker can be also used as the PV system
> disconnect?
>
> This is for a line tap situation.  I am accustomed to doing these systems
> with an AC combiner, and separate enclosure for a breaker style, line tap
> over current protection.
>
> Any thoughts/comments would be appreciated.
>
> Thanks,
>
> Kevin
>
>
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