[RE-wrenches] Outback MX60 Replacement

[Jason Szumlanski]

I was definitely leaning this direction, actually. The homeowner really has
it in his mind that it should be simple to just replace the panels. It's
tough to crack that shell. He's 80 plus.

He even wanted me to install new panels on old 2-inch angle aluminum that
is holding up the existing 190 watt panels. I nixed that idea right away.


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, 9:57 AM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I would consider looking at full replacement, because if they have a mx60
> it’s likely the inverters are also 20 yrs old.
>
> Given the costs of a 600v CC, plus BOS ( I don’t recommend installing 600v
> into the green boxes) a midnite AIO isn’t going to be much more expensive.
>
> Just my 2 cents
> Jay
>
>
>
>
>
>
>
> On Apr 18, 2025, at 7:45 AM, Tyrone Houck via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
> I don't have another recommendation for a 600v charge controller but I can
> tell you Midnite does make a standard, single space panelmount 125a
> breaker. Also keep in mind the PV input breaker would have to be 600v
> rated, also readily available from Midnite..
>
> Tyrone Houck
> Oregon Solarworks LLC
> CCB #204937 LRT #076
> 541-787-1366
> tyrone at oregonsolarworks.com
>
>
>
>
> On Fri, Apr 18, 2025, 5:36 AM Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> 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
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