Hi Kirk,

See 2008 NEC 225.30 thru 225.40. As I understand it, separate disconnects, 
up to six for each array, located on the main building, are required and
appropriate. 

Dick Ratico
Solarwind Electric

--- You wrote:
Hello,

I'm working on a system which will have 5 kw on an outbuilding and 20kw on
the main building, all Enphase inverters, I plan to put an AC disco for the
5kw on the outside of its building and another on the outside of the main
building for the 20 kw array. Both arrays feed into the main panel in the
main building. But now I'm wondering if I might have to combine the 5kw and
20 kw outputs so the outdoor disco on the main building shuts both arrays
off. Any ideas here? I don't think the code addresses this clearly.

 

Kirk Herander

Vermont Solar Engineering

802.863.1202

NABCEP(tm) Certified Solar Installer

NYSERDA-eligible Installer

VT Solar Incentive Program Partner
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