This standard is applicable to portable ladders made of non conductive stiles, including accessories used to work on or near electrical systems and installations in the low voltage range (below 1 000 V a.c./1 500 V d.c.). These ladders are used, to provide temporary access, generally on overhead line structures and to undertake electrical operations. They shall be used by one person only. These ladders are not intended to be put in direct contact with energized parts nevertheless they provide sufficient insulation level to protect against inadvertent contact with low voltage live parts. The requirements and tests described in this standard shall be considered in addition to the EN 131 series.
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