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AFCI – Arc-fault circuit interrupter

Electricity is one of those things that deserves respect. I came across a new term this morning on a tip from DIY Insanity, ACFI or Arc-fault circuit interrupter. From Wikipedia comes this explanation:

An arc fault circuit interrupter (AFCI) is a circuit breaker designed to prevent fires by detecting non-working electrical arcs and disconnect power before the arc starts a fire.
The AFCI should distinguish between a working arc that may occur in the
brushes of a vacuum sweeper, light switch, or other household devices
and a non-working arc that can occur, for instance, in a lamp cord that
has a broken conductor in the cord from overuse. Arc faults in a home
are one of the leading causes for household fires.

Moving forward it will probably save lives, and may be something to think about in doing serious electrical remodeling, but has not been adopted as a requirement across the US yet.