February 14, 2008 at 12:00 am #63839
It is if you have strong electric/wiring skill. If not it is best to let someone do it for some of the regulations are not as intuitive or obvious as you may expect them to be. There is a book
If you want to do it yourself you can check out this book:
Photovoltaics design and installation manual : renewable energy education for a sustainable future / Solar Energy International.