Module Layout
Module sizes and dimensions need to be carefully considered to maximize roof space, while meeting local fire safety setbacks. The illustrations at left show the importance of comparing different module options. Both rooftops are the same size; both have arrays that use 185 W modules, but the modules have different dimensions. This results in the top left array having 27% more rated capacity. (Note: If modules were arranged in landscape orientation, the bottom array could accommodate 24 modules instead of 22.)
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