How long do Bowens bulbs/fuses normally last?
I would not imagine the fuses to have a definitive life span or "wear out", every fuse I have seen works until there is a problem. If you are consistently changing fuses, there is a serious problem, either in the light or the power supply (AC outlet, power pack, etc). For example, how often do you replace fuses in your car?
Film is a four letter word