nvent CADDY Speed Link Manual page 12

2. Typical Speed Link SLK Installation
ii. Increasing Safety Factor
To determine the system working load: The max working load is determined by the component with the lowest allowable working load.
To determine the system working load with a single safety factor: In some cases, the hanging system will be made up of components
with a variety of safety factors, working loads, and/or ultimate loads. It may be convenient to convert the working loads of all
components to a safety factor of 5. This allows the minimum working load with safety factor 5 to be determined.
For components with safety factor other than 5: multiply the working load by the given safety factor. Divide the result by 5. This gives
the working load at safety factor 5. For components with ultimate load only: divide the ultimate load by 5. It is recommended to round
down to find the working load at safety factor 5. Once the working load at safety factor 5 is found for each component, those loads can be
compared to the Speed Link working loads to determine the limiting component for the system working load at safety factor 5.
Increase the safety factor by reducing the working load. For some applications ( e.g., theater stages ) , a larger safety factor may be
required. The formula is:
Reduced Working Load=Maximum Working Load×5/Required Safety Factor
The Required Safety Factor must be ≥5
Example: If the Required Safety Factor is 10, then the Reduced Working Load for a 2 mm wire rope is 50 lbs. [222 N] instead of the
Maximum Working Load of 100 lbs. [444 N]
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