🔍 Key Concepts

• Safe Working Load (SWL) of the fall versus rated capacity of the winch • Purpose of an overload safety device on electric cargo winches • Difference between breaking strength and safe working load of a line or fall

💭 Think About

• Ask yourself: Is the overload device designed to act at the point of failure, or to prevent reaching that point? • Consider which component is more likely to be protected first: the wire/rope (fall) or the winch machinery itself. • Think about how a conservative safety margin is usually applied in lifting gear: do we work at breaking strength, or well below it?

✅ Before You Answer

• Verify how safe working load (SWL) relates to breaking strength (what safety factor is typically implied). • Compare the meaning of rated capacity of the winch with the safe working load of the fall—are they always the same? • Check which wording describes an overload device that trips preventively rather than at or after an overload condition has fully developed.