Do you figure in the roof angle also?
I was reading the solar panel tilt information posted by Westend, Thanks for providing the site. Question, When figureing the panel tilt angles per Optium Tilt site, do you also have to also fig...
Forum Discussion
If your seasonal winter setting for that area is 60, then you have to set the angle at 60 against horizontal level. What Mr. Wiz said.
If your roof already has South-facing 7 deg slope, then the panel should be set at 60-7=53 deg against the roof surface. To be exact, 53 against the tangent to the cambered roof surface.
If your roof has North-facing 7 deg slope, then the panel should be set facing South at 60+7=67 deg against the roof surface. Because the seasonal angle that you're getting from those websites, is against horizontal level.
But, because the aforesaid 60 number will change to a different number (likely, to a lower one) when you are not facing True South or True North, I think you could just ignore 7 deg slope, because the angle will be off anyway.
If your roof already has South-facing 7 deg slope, then the panel should be set at 60-7=53 deg against the roof surface. To be exact, 53 against the tangent to the cambered roof surface.
If your roof has North-facing 7 deg slope, then the panel should be set facing South at 60+7=67 deg against the roof surface. Because the seasonal angle that you're getting from those websites, is against horizontal level.
But, because the aforesaid 60 number will change to a different number (likely, to a lower one) when you are not facing True South or True North, I think you could just ignore 7 deg slope, because the angle will be off anyway.
