Why Does My Fluke Multimeter Show Ghost Voltage Readings from the High Impedance Input?
You turn on your Fluke multimeter, touch the probes to a wire, and see voltage where there shouldn’t be any. This ghost reading can make you question your meter and your work. Your Fluke’s high impedance input is so sensitive it can pick up stray voltages from nearby energized wires, like a radio antenna. This … Read more