[RE-wrenches] fusing requirement for 4 strings run to a Inverter with 2 MPPT's

[Jerry Shafer]

Regarding the primo we just installed 5 at a location and used the midnite
with the switch, (mnpv6 disco) its the only way on this inverter to perform
any testing. With all the issues it helped out a great deal.
Jerry
On Jan 27, 2016 4:09 AM, "Allen Frishman" <amfrish at aeonsolar.com> wrote:

> Wrenchers,
> What is the requirement for fusing 2 strings per MPPT?     Specifically
> for an inverter like the Fronius Primo that has no integrated fuses.    If
> you run 2 strings to each MPPT do you need to fuse each string?    In this
> case there is a total of 4 strings which would need to be fused if using a
> single mppt.
>
> If the home runs are run in separate conduits from the array to limit the
> strings in the conduit to 2 per you still have all 4 strings together in
> the inverter.
>
> All thoughts and feedback are appreciated.
>
> *Al Frishman*
> AeonSolar
>
> *(917) 699-6641 <%28917%29%20699-6641> - cell*
> *(888) 460-2867 <%28888%29%20460-2867>*
> *www.aeonsolar.com <http://www.aeonsolar.com/>*
>
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