考虑有三点-------取线三个中线径最大的: 1)如果是灯串: The nominal cross-sectional area of the conductors shall not be less than the following values: a) 0,5 mm2 for class II lighting chains with E5 or E10 lampholders or other small lampholders; b) 0,75 mm2 for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted with series connected lamps; c) 1,5 mm2 for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted with parallel connected lamps; d) 0,5 mm2 for class III chains and parts of chains supplied by SELV and with a maximum rated wattage exceeding 50 W; e) 0,4 mm2 for class III chains and parts of chains supplied by SELV and with a maximum rated wattage not exceeding 50 W; f) 1 mm2 for the cable between the plug and a sealed chain without joints; g) 1,5 mm2 for the cable between the plug and a sealed chain with joints.
2)针对吊灯: – 0,75 mm2 for ordinary luminaires; – 1,0 mm2 for other luminaires.
3)考虑电流,可以百度一下 (考虑线径和电流之间的对应关系)
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