[RE-wrenches] TL inverter with long DC Feeder

[August Goers]

William,



I see now from the separate post from Michael Kelly of Solectria that
indeed you cannot combine your two strings with this inverter. I think that
leaves you stuck with four separate disconnect switches unless someone on
this list knows of a four pole DC rated disconnect switch. Or, you’ll have
to switch inverters. I have never installed these Solectria inverters so I
don’t know much about them.



Best,



August

Luminalt



*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *William Miller
*Sent:* Tuesday, October 07, 2014 8:28 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] TL inverter with long DC Feeder



August:



I have been told I can't combine upstream of the inverter.



William


Miller Solar


On Oct 7, 2014, at 8:03 AM, August Goers <august at luminalt.com> wrote:

William,



We have bumped into similar dilemmas when needing remote DC disconnects
with TL inverters. I believe the Solectria you are using has two MPPTs?
Ideally, you would keep each string separate to benefit from the dual
trackers – this would mean four DC disconnects if you went with a standard
product like a Square D HU361RB. If you combine each of the two strings out
at the array(s) then you could get away with two disconnects, one for each
inverter. Neither option is ideal.



Best,



August



Luminalt
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