Electronics > Projects, Designs, and Technical Stuff

Fuse selection (blow times)

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Simon:
Yes, ultimately it's to protect for a dead short circuit. And yes i am going prom a larger supply to multiple fans so refusing undividually.

ejeffrey:
But can you just use wiring that can handle the full circuit capacity?  Or is the added cost and weight of the copper prohibitive?

Simon:
No, it's feeling like an OCD thing. the wire that supplies all fans will be too big to go to any one fan. In I tend to use more individual wires than one bit one. So that is where a PCB helps because the main power comes right in on a power stud on the PCB and then the PCB splits it to the pins of a connector that supplies each fan.

T3sl4co1l:
Slow blow is mainly if you need to protect the wiring while allowing for loads with large inrush.

Use the regular fast fuse.

Tim

Simon:
well I guess if any capacitance charges in under 5 seconds without too much inrush a 5s time will be enough. I guess i can do that test. Just set up a relay on a battery to cycle.

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