I That's interesting Drake, about the accessible groups. Are there clearance issues for thermal concerns or anything? It sounds like you could run your dc wires up the rows and have all your inverters grouped on the top rail. That a one man call to trouble shoot a system which has been a big concern from many voices all along. Maybe those guys can offer several whip lengths or something... i don't know I haven't worked with the gear yet.
nick vida I'm also concerned about the issues brought up here. I have two possible projects that would benefit from Enphase due to the fact that the modules will go on more than one roof, with significantly different orientations. In one case, there are shading issues as well. Supposedly the Enphase units are selling fast. Someone must be installing them. They have been out long enough that there must be some data as to whether or not the units are surviving. The long term will not be known until the inverters have been out for many years, however if they are having issues in the short term, then we know they have issues. One idea that Enphase tech support said was acceptable was to mount the inverters in accessible groups. The DC leads would need to be extended, and some loss would occur. Also the inverters can be mounted in vented attics. Having the inverters in a group in an accessible attic would make maintenance easier than tearing apart an array to get to a dead inverter.
_______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org