
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
出版:Interstandard (Russia)

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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
出版:Interstandard (Russia)
專家解讀視頻