For extension ladders, an electrician must not stand higher than which rung from the top?

• A. fourth
• B. third
• C. fifth
• D. second

Answer: (A)

Ladder safety rule: on extension ladders, you should not stand higher than the rung that is four from the top. This keeps you well within the lower portion of the ladder where you have solid footing and a firm handhold, making it easier to stay balanced as you work. Standing higher near the top reduces stability because there’s less ladder above you to grab onto and more reach away from the rails, which raises the chance of slipping or tipping. The top few rungs are intended mainly for climbing or gripping, not for standing and working. So the safest limit is four rungs down from the top.