DS DS/EN 61478/A1
DS DSEN 61478A1 2004-MAR-19 Lve workng - Ladders of nsulatng materal
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This International Standard is applicable to fully insulating spliced or hook ladders with extension or having a combination of insulating and conductive sections and used for live working on a.c or d.c. electrical installations at 1000 V and above for a.c. and 1500 V and above for d.c.