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2. Arc-fault circuit interrupter - Wikipedia

   en.wikipedia.org/wiki/Arc-fault_circuit_interrupter

   An arc-fault circuit interrupter (AFCI) or arc-fault detection device (AFDD) [1] is a circuit breaker that breaks the circuit when it detects the electric arcs that are a signature of loose connections in home wiring. Loose connections, which can develop over time, can sometimes become hot enough to ignite house fires.

3. Arc fault - Wikipedia

   en.wikipedia.org/wiki/Arc_fault

   An arc fault is a high power discharge of electricity between two or more conductors. This discharge generates heat, which can break down the wire's insulation and trigger an electrical fire. This discharge generates heat, which can break down the wire's insulation and trigger an electrical fire.

4. File:Leviton Dual Function AFCI GFCI Receptacle.jpg

   en.wikipedia.org/wiki/File:Leviton_Dual_Function...

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5. Sulfur hexafluoride circuit breaker - Wikipedia

   en.wikipedia.org/wiki/Sulfur_hexafluoride...

   After contact separation, current is carried through an arc and is interrupted when this arc is cooled by a gas blast of sufficient intensity. [1] SF 6 gas is electronegative and has a strong tendency to absorb free electrons. The contacts of the breaker are opened in a high-pressure flow of sulfur hexafluoride gas, and an arc is struck between ...

6. NEMA connector - Wikipedia

   en.wikipedia.org/wiki/NEMA_connector

   The National Electrical Code has been updated for 2014 to address the use of Outlet Branch Circuit (OBC) Arc Fault Circuit Interrupter (AFCI) receptacles as an alternative to traditional circuit breakers when used for modifications, extensions, replacement receptacles, or in new construction.

7. National Electrical Code - Wikipedia

   en.wikipedia.org/wiki/National_Electrical_Code

   One GFCI receptacle can serve as protection for several downstream conventional receptacles. GFCI devices come in many configurations including circuit-breakers, portable devices and receptacles. Another safety device introduced with the 1999 code is the arc-fault circuit interrupter (AFCI). This device detects arcs from hot to neutral that can ...