Description of a circuit to tell if the high-voltage supply in an industrial smokestack precipitator is functioning properly.

Voltage is a lot like water pressure, and a vehicle’s bulbs, motors, pumps, injectors and other devices that perform work need a proper supply delivered to them.

Inevitably, industrial facilities are going to have 460VAC, 3-phase motor loads. And, of course, since voltage drop is considered mainly a performance issue, maximum voltage drop rules on a circuit ...