What term describes the phenomenon when energized circuits and non-energized wiring are in close proximity?

The term "ghost voltages" refers to the phenomenon where a small amount of voltage appears on non-energized conductors due to their close proximity to energized circuits. This occurs as an electromagnetic field generated by the energized wires induces a voltage in the nearby non-energized wires. This induced voltage can be misleading, especially during testing, as it may suggest the presence of a live circuit when, in fact, there is none.

Understanding ghost voltages is essential for safely conducting electrical measurements. When working in environments where energized and non-energized wires are in close contact, technicians must be aware that the readings from tests may not accurately reflect the actual electrical conditions. Proper training and techniques, such as using test tools that can differentiate between ghost voltages and actual voltage, are critical for avoiding misinterpretations that could lead to unsafe situations.