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Arc-Fault, Circuit, Interrupter
A device designed to detect and interrupt an electric arc in the circuit.
Example usage: The electrician installed an arc-fault circuit interrupter to protect the circuit.
Most used in: North America, Europe, and Australia.
Most used by: Electricians, home inspectors, and construction workers.
Popularity: 8/10
Comedy Value: 2/10
Also see: AFCI, Arc Fault Breaker, Arc Fault Interrupter, Arc Fault Protection Device,
What is an Arc-Fault Circuit Interrupter?
An arc-fault circuit interrupter (AFCI) is an electrical safety device designed to prevent fires caused by arcing faults in the electrical system. AFCIs detect arc faults, which are dangerous electrical problems caused by damaged, aged, or improperly wired electrical cords or devices. They are typically installed in areas where electrical wiring is most likely to be exposed to damage, such as in bedrooms and other living areas.
An AFCI works by detecting arcing faults, which occur when electricity jumps across a gap within an electrical circuit. The device will then trip, or shut off the circuit, preventing the electricity from reaching any other parts of the circuit. This prevents the arcing from igniting nearby combustible materials and causing a fire.
AFCIs are required by the National Electrical Code in new homes since 1999, and are required in all bedroom circuits in the US. According to the National Fire Protection Association, electrical fires account for an estimated 51,000 fires each year, resulting in over 500 deaths, 1,400 injuries, and $1.3 billion in property damage.
AFCIs are an important part of any electrical system and provide an additional layer of protection against electrical fires. It is important to have an AFCI installed in any circuit where electrical wiring is exposed to damage and in any bedroom areas.
The Origin of the Term 'Arc-Fault Circuit Interrupter'
The term 'Arc-Fault Circuit Interrupter' (AFCI) was first introduced in the early 1990s in the United States. It was developed as a safety device to protect against electrical arcs in residential wiring. An arc fault is an unintended electrical arc that can occur from a loose connection or damaged insulation in an electrical circuit.
The National Electrical Code (NEC) published by the National Fire Protection Association first recognized AFCIs in 1999, and the first AFCI products were available for purchase in 2000. The NEC updated their requirements for AFCIs in 2002 and again in 2008, making them mandatory in all new residential construction.
Today, AFCIs are widely used in residential wiring to prevent electrical arcs and reduce the risk of fire. They are designed to detect arcing faults and quickly shut off the power to the affected circuit, preventing electrical fires.
