I have officially started on this massive controller for my 5K-Watt DC coil. This will not only control the fans and power to the rotor gap (variac to change speed), but will also limit current and voltage to the pig. A hefty variac will control the voltage and a large variable inductor will control the current. The pig does not contain any current limiting properties, so an external current limiting mechanism is essential. This monstrous gigantic cooper thing is already over two hundred pounds. I am confident the time I finished with meters, fuses, and switches, this beast approaching three hundred pounds. Adding pictures as I progress; tab on pics to enlarge.