03-02-2009, 10:43 AM
Actually, you can figure this out very easily on a sheet of paper: draw a right angle, mark off 7'6" on the horizontal line, and 30" on the vertical one. Use your scale rule to measure from the top of the vertical line to the end of the horizontal one - I get a figure of 8'0", dead-on. This will save you the cost of the hunk of wire, although you'll still need to make the ceiling/soffit sub-roof. 
Wayne
Wayne