As cab operation can move only two control handles at once, one hand should always be on which controller?

As cab operation can move only two control handles at once, one hand should always be on which controller?

• A. Bridge controller
• B. Trolley controller
• C. Hoist controller
• D. Emergency stop

Answer: (C)

When operating an overhead crane, the load’s vertical position is the most critical factor to manage constantly. Since you can move only two control handles at once, keeping one hand on the hoist controller ensures you can immediately lift or lower the load as needed while you use the other hand to move the crane horizontally (bridge or trolley). This readiness to adjust height helps prevent the load from swinging, striking obstacles, or dropping too quickly, and it gives you immediate control during positioning and set-down. The other controls handle horizontal movement and safety stops. Moving the bridge or trolley is important for positioning, but they don’t directly control the load’s vertical path. The emergency stop is a safety feature for urgent situations, not a normal-control hand position.

When operating an overhead crane, the load’s vertical position is the most critical factor to manage constantly. Since you can move only two control handles at once, keeping one hand on the hoist controller ensures you can immediately lift or lower the load as needed while you use the other hand to move the crane horizontally (bridge or trolley). This readiness to adjust height helps prevent the load from swinging, striking obstacles, or dropping too quickly, and it gives you immediate control during positioning and set-down.

The other controls handle horizontal movement and safety stops. Moving the bridge or trolley is important for positioning, but they don’t directly control the load’s vertical path. The emergency stop is a safety feature for urgent situations, not a normal-control hand position.