I am doing some re-search for my father that works with electricity. He say that his Y Dc Electrical Fuses start to burn out, a lot. Please Help. xx
Fuses burn out because too much current is passed through them, and they go open-circuit, as they are designed to do.
If a device is regularly burning out fuses, the problem is probably not the fuses (It would be worth trying fuses from different sources, in case there are manufacturing issues).
The problem is with the appliance in which the fuses are failing. There is some issue that is causing the appliance to draw more current then it is normally supposed to.