Is safe working load of rope same as breaking strain?

To convert breaking strain to safe working load you must establish a safety factor (SF). Assume SF of 10. If a line has a breaking strain of 1 tonne then you should only suspend or load the line to a strain of 100Kg (1000Kg/10) A common SF for normal use is 6. If human loads are in use then SF 10 is more common.