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IEC 60364-7-729 Ed. 1.0 b:2007
Low-voltage electrical installations - Part 7-729: Requirements for special installations or locations - Operating or maintenance gangways
"The requirements of this part of IEC 60364 apply to basic protection and other aspects in restricted access areas with switchgear and controlgear assemblies, including requirements for operating or maintenance gangways."
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International Electrotechnical Commission [iec]