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考虑有三点-------取线三个中线径最大的:
, w/ ]$ f* s( E8 k- x- D1)如果是灯串:
x4 d$ w+ F+ O, K& KThe nominal cross-sectional area of the conductors shall not be less than the following values:( J e' Z" t; d- t
a) 0,5 mm2 for class II lighting chains with E5 or E10 lampholders or other small lampholders;0 Q; i$ ?+ M$ ]8 @% b4 u+ `2 @
b) 0,75 mm2 for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted with
* G* t* Z" X/ S c2 @3 Sseries connected lamps;
3 y: g. \2 L1 |6 v$ [ Jc) 1,5 mm2 for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted with# q3 `( l/ C& |1 I$ u
parallel connected lamps;
. i0 B6 W8 D; P0 Id) 0,5 mm2 for class III chains and parts of chains supplied by SELV and with a maximum" s1 Y) K) f3 t0 |# Q" k
rated wattage exceeding 50 W;
- m3 X$ O& t- n8 H2 d0 he) 0,4 mm2 for class III chains and parts of chains supplied by SELV and with a maximum* { w0 h# c* x: R
rated wattage not exceeding 50 W;4 b% N% Q. Z! J; @
f) 1 mm2 for the cable between the plug and a sealed chain without joints;
! n( C# Y/ g( l& W4 E8 M; \g) 1,5 mm2 for the cable between the plug and a sealed chain with joints.
B" o7 f- e+ I) z- S% b0 D7 \' Z1 A( c8 R$ D+ g. S
2)针对吊灯:
" V" |6 D8 @' e# W+ D– 0,75 mm2 for ordinary luminaires;
2 A7 P8 }0 v& X: a– 1,0 mm2 for other luminaires.
5 p( E5 g( {0 c
& j9 c! W. I: c; n3 T9 I3)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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