uhhhhm....100' minimum distance at ground level from a High Voltage triphase transmission line at 380KV 1500A means that flying at ground level with 50' metal line, you are fishing into an mean electric field of 500V/m. In other words you are fishing with metal wires into an electric field at a potential of 7.5 KV more than the potential of pilot. And things should be worse if you fly above ground level....