When are spotters required while operating near energized powerlines?

• A. When the operator cannot clearly see the visual aids.
• B. When the wind exceeds 35 mph.
• C. When the crane is within the prohibited zone.
• D. When moisture contaminates tagline.

Answer: (A)

Spotters are required whenever the operator cannot clearly see the lines or other visual indicators that mark the hazards around energized powerlines. If the line of sight is blocked by distance, the crane’s structure, the load, or other obstructions, a spotter helps guide the crane and communicate safe clearance to prevent contact or arcing. This emphasis on visibility and clear indication of hazards is why the need for a spotter is tied to not being able to see the visual aids clearly.

Wind, a zone designation, or moisture on equipment aren’t the triggers for bringing in a spotter in this context. They can raise overall risk and call for additional precautions, but the requirement here hinges on being unable to clearly see the visual indicators of the powerlines.