Marco:
Good point. If one can position transition boxes close enough to the modules, you can use only the leads from the modules, avoiding the need to buy any PV wire. It is surprisingly easy to do. See: http://www.millersolar.com/MillerSolar/practices/PV_wiring/PV_Cable_wiring/_ PV_Cable_Wiring.html WM double-insulated wire has to be used from the module series string to the first enclosure and enclosed raceway where the transition to standard THHN/THWN wire can be made. marco
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