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1 definition by kawaresksenjajok

 
1.
AFI
Arc Fault Interrupter, a type of electrical protection device that senses an arc between live conductors and ground, and will interrupt the cicuit to prevent a fire. Arcs can be caused by drilling/cutting/nailing into a wire within a wall. Similar to a GFI, Ground Fault Interrupter.
I'm sure glad we installed that AFI, it kept the house from burning down.
by kawaresksenjajok October 07, 2005