Fuse current.

[I like FI 10+ year member]

how can 200 amps flow thru such a tiny peace of metal without having large resistance?

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[IDSkoT 5,000+ posts]

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What?

 

[I like FI 10+ year member]

im talking about if fuses restrict current flow.

 

[I like FI 10+ year member]

see any fuses here?

 

[IDSkoT 5,000+ posts]

The voltage drop for fuses is like .0001 in most cases. Not even enough for it to be an applicable worry.

 

[oldschool4me 10+ year member]

i think it would be minimal if any loss and only when your pushing the fuses limits.

 

[oldschool4me 10+ year member]

The voltage drop for fuses is like .0001 in most cases. Not even enough for it to be an applicable worry.

he was asking about current.

 

[I like FI 10+ year member]

the best way to know is to measure with a clamp meter.

the fuse get warm/hot, that probably means there is resistance.

I dont think top spl guys use them.

 

[Moe Lester 10+ year member]

It is because it is such a short distance. You also are not pulling 200 amps constantly.

@ Idskot's comment:

If you are competing and run a fuse, tear that fuse out for your run. Just removing the fuse on a small setup (1000wrms) used for only testing gained 0.4 volts at the amp during the burp.

 

[loopkiller 10+ year member]

OK, here is the honest truth. If you are building a burp comp vehicle, fuses in general are going to minimally reduce your score. There are many many other things that can affect your score in a much larger magnitude. The construction of your enclosure is much more critical than a simple fuse. But, all things equal, a fuse will change your score minimally.

Now does that mean that daily drivers should run unprotected? Of course not. Could you ever hear a difference of fuse vs no fuse? Never. Would you be able to tell if your car burns down? Very likely.