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DS/EN 61478/A1:2004
Live working - Ladders of insulating material
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.
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Danish Standards [ds]