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).
AFCI protection is provided by either an AFCI circuit breaker installed at the electrical panel, or by a receptacle specifically identified as providing arc fault protection. Both the circuit breaker and receptacle are installed similar to the GFCI circuit breakers and receptacles that are present in many homes already.