[RE-wrenches] Outback MX60 Replacement

[Jason Szumlanski]

There are particular challenges with running new conductors to the roof,
and I don't have 8 wires to work with, unfortunately. This is one of the
reasons I am planning a single string at 600V


Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208


On Fri, Apr 18, 2025 at 8:34 PM MDElectricSolar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> You could swap it out with a FM-80 and do 4 strings of two modules in
> series.
>
> Michael D Nelson
> MD Electric & Solar, Inc.
> 707-684-0064 mobile
> 707-884-1862 office
> www.mdelectricsolar.com
> www.facebook.com/mdelectricandsolar
>
>
> On Apr 18, 2025, at 6:40 AM, Christopher Warfel via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
>
> Hi Jason, I have the same set up. These are the array and cc breakers.
> Although we are having a power outage right now, the DC shunt is doing its
> usual crazy reading from time to time.   Chris
>
>
> <2b1DSIMNoJXo0FJ2.jpg>
>
> On 4/18/2025 8:35 AM, Jason Szumlanski via RE-wrenches wrote:
>
> Hi all,
>
> I have a client that wants to replace a PV array that is aging and
> hurricane damaged. It's a rather old array of unknown rating connected to a
> MX60 via a Flexware 500 DC enclosure (48V).
>
> I'm planning to install eight REC 450 Alpha Pure RX in series. I'm going
> to need a 600 volt charge controller. I'm considering a Midnite Hawk's Bay
> unless someone has a better idea.
>
> The customer sent me this crude image. I can see the two inverter breakers
> on the right. I am wondering what the two breakers on the left are. I'm
> thinking one of these is an 80 amp breaker for the output of the MX60. The
> other one is probably a PV input breaker of unknown rating. I would need to
> change these to accommodate the new charge controller. The Midnite Hawk's
> Bay 90 requires a 125A output breaker. Does anyone know if there is an
> Outback breaker of this physical size and 125A rating to plug into this DC
> FlexWare enclosure? For the PV input, I should be able to get whatever
> breaker is required for this single string of PV.
>
> I'm all ears if there is an easier way to go about this with approximately
> 3,600W of new PV.
>
> Thanks in advance!
>
> Jason Szumlanski
> Florida Solar Design Group
>
> Check out or update participant bios:http://www.members.re-wrenches.org
>
> --
> Christopher Warfel, PE
> ENTECH Engineering, Inc.
> PO Box 871, Block Island, RI 02807
> (401) 447-5773
>
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