Arc Fault Protection Devices or AFDDs, are protective devices installed in consumer units to provide protection from arc fault.

AFDDs work by automatically tripping a circuit when a dangerous electric arc is detected.

An arc fault is a high power discharge of electricity between two or more conductors. The discharge of electricity will generate heat, which may damage the wire's insulation and trigger an electrical fire.

Dangers of an arc fault range from minor injuries, third-degree burns and potential death as well as other injuries such as blindness, hearing loss, nerve damage and cardiac arrest.