What is the - safety factor - in electrical engineering?

In electrical engineering, the safety factor is a design criterion that provides a margin of safety by comparing the maximum load or stress a system can withstand to the actual load or stress it will experience during normal operation. It is typically expressed as a ratio, indicating how much stronger a system is than it needs to be for its intended use. This factor helps ensure reliability and safety, accounting for uncertainties in material properties, environmental conditions, and operational variations. A higher safety factor generally means greater reliability but may also lead to increased costs and material usage.