本加拿大国家标准适用于完全绝缘的拼接或钩形梯子，带有延伸部分或具有绝缘和导电部分的组合，用于交流1000 V及以上电压和直流1500 V及以上电压的交流或直流电气装置的带电作业。梯子在功能上分为1类和2类。本标准仅涉及合成材料制成的梯子。这些梯子通常用于在架空线路结构上提供通道，并便于带电作业，可以是热杆式、徒手式或两者结合使用。

This National Standard of Canada 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 1 000 V and above for a.c. and 1 500 V and above for d.c.The ladders are classified functionally as Category 1 and Category 2. This standard concerns only ladders made of synthetic material.These ladders are used, to provide access, generally on overhead line structures and to facilitate live working, either hot stick, barehanded or a combination of both.