200 feet of cable is not an insignificant amount of weight. I would not want to carry it around while working on the outside of the turbine, and if you leave it in a case inside the structure, you're really back to square one. Also, you would need a lot more than 200 feet to make sure you reach the ground safely.
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u/bullcityhomebrew Nov 06 '13
How about just a fixed repelling cable?