Boxes and enclosures for electrical accessories for household and similar fixed electrical installations—Part 21: Particular requirements for boxes and enclosures with provision for suspension means
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations—Part 23: Particular requirements for floor boxes and enclosures
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations—Part 22: Particular requirements for connecting boxes and enclosures