The well-known crack of a rifle, whose ball came skipping along the placid surface of the strait, and a shrill yell from the island, interrupted his speech, and announced that their passage was discovered.
An arc fault circuit interrupter (AFCI) is a circuit breaker that breaks the circuit when it detects an electric arc in the circuit it protects to prevent electrical fires. An AFCI selectively distinguishes between a harmless arc (incidental to normal operation of switches, plugs, and brushed motors), and a potentially dangerous arc (that can occur, for example, in a lamp cord which has a broken conductor).
Electrical circuit-interrupters. 1  All AFCIs and GFCIs, whether circuit-type or breaker-type, should be installed by a qualified electrician. 2  Test AFCIs and GFCIs after installation and once a month thereafter to make sure they are working properly.  Replace defective AFCIs and GFCIs immediately.