I live in an old school that has a flat roof. I went up to the rooftop today to see a neighbor's new install (a dish for satellite only) and found that it had been grounded in a very odd way. The cable has the ground running along side and the installer actually attached the ground to THE BRASS COOLANT COIL OF A ROOFTOP AIR CONDITIONER. This does not look safe at all (to me). Please comment. Is this dangerous like I think it is?
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