SANS 60670-22-2003 家用和类似固定电气装置的电气附件用机箱和外壳．第22部分：连接机箱和外壳的特殊要求
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations Part 22: Particular requirements for connecting boxes and enclosures
Applies to connecting boxes for junctions or tappings (or both), and enclosures and parts of enclosures for electrical accessories with a rated voltage not exceeding 1 000 V a.c. and 1 500 V d.c. intended for household or similar fixed electrical install