Closed Circuit 1 : Electric circuit in which there is a complete path for the current to flow, e. g. the lighting circuit in a house after the switch has been put on. See also: Breathing Apparatus, Closed Circuit, Circuit
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}