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Someone correct me if I'm wrong here:


If you're using subconductors (multiple conductors per phase) you''ll use you the formulas you listed when solving for XL or L


GMRc is used for finding C and XC. It's the same formula except you use you're actual radius instead of r' (0.7788r)


When you just have one solid conductor (like in the NCEES exam) you can just use the radius of that cable for GMR (radiusx.7788) and GMRc (the actual radius)


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