Voltage 12 : Voltages are now classified in two bands in line with European countries. Band I = 0-50 V and Band II - 50-1000 V. Further bands for voltages over 1000 V
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}