Why is the Rated Capacity Indicator useful for crane safety?

• A. It measures wind speed.
• B. It logs maintenance intervals.
• C. It helps avoid exceeding capacity by showing current rated capacity for configured boom length and angle.
• D. It monitors engine temperature.

Answer: (C)

The main idea is that the Rated Capacity Indicator provides a real-time, configuration-specific limit for what the crane can safely lift. The crane’s load capacity depends on how the boom is set (length and angle) and other setup factors. The indicator reads sensor data and references the load chart to display the maximum safe load for the current setup, so the operator can see at a glance whether a proposed lift is within safe limits. This directly reduces the risk of overload, tipping, or structural stress because you’re basing lifts on the actual safe capacity rather than guesswork.

Wind speed monitoring, maintenance logging, and engine temperature are important safety and maintenance features, but they serve different purposes and do not directly govern the safe load for a given boom configuration.