Breaker space in PS-2DC [RE-wrenches]

[Allan Sindelar]

Geoff,
1. Add a Midnite MNPV-3 or -6 for additional breaker space.
2. Can you replace GF inverter breakers (175 or 250A) with smaller CD
breakers (100 or 125A)? That would free up a bit of space.
3. Combine the outputs on a single breaker, with individual supplemental
fuses on each controller.

Allan at PosE


----- Original Message ----- 
From: "Geoff Greenfield" <Geoff at Third-Sun.Com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, April 24, 2007 12:48 PM
Subject: Breaker space in PS-2DC [RE-wrenches]


>
> I have a customer with a PS-2DC with 2 inverters and 2 MX-60s... He would
> like to expand his array (adding a 3rd MX-60).  The problem is we have
only
> 3 breaker spaces left and I figure I need 3 for a second GFI and a fourth
> for the DC disco to the MX-60.
>
> The mx-60 could be current limited to 43 amps - what would you all say to
> using the gfi on both sides (prob no good as I think the gfi is not a
> current limiting device).  Maybe I could add a DC fuse inside to handle
that
> and just use the gfi as disconnect means.
>
> Other work around would be a kluged add on box to hold a DC breaker (or
> GFI).  Not clean, but do-able.
>
> This is rural and not inspected but our policy is to work safely and to
the
> NEC (or to it's intent when we are the design review).
>
> Any suggestions would be appreciated!
>
> For a brighter energy future,
>
> Geoff Greenfield
> President
> Third Sun Solar & Wind Power Ltd.
> 340 West State street, Unit 25
> Athens, Ohio 45701
> (740) 597-3111   fax: (740)597-1548
> www.third-sun.com
>
> Clean Energy - Expertly Installed
>
>
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