Does a fuse bottleneck my current flow?

[ghart999 10+ year member]

I am just wondering if running 200A of current through the diameter of a 200A fuse is destorying the whole point of low resistance with big 0 guage wire.

I mean the fuse is 1/00 the thickness of the 0 gauge, so it almost seems like this is a problem? Also what about using crimp on 0 gauge terminal rings? Is that thin amount of metal causing problems with resistance? Should I use those big thick screw in terminal rings instead or should it not matter?

Thanks.

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[JimJ 5,000+ posts]

Yes, it's tiny compared to the power wire, but it's also very, very short in lengh. So you get a voltage drop across the fuse, but the protection you get from it is certainly worth the minor drop //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I like screw terminals instead of the crimp ones simply because I'm lazy, and like the clean look of a screw-on terminal instead of hammering the shit out of a crimp of that gauge //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[ghart999 10+ year member]

So I assume I could measure voltage before the fuse and then after to see that drop right?

 

[benvaldi88 10+ year member]

So I assume I could measure voltage before the fuse and then after to see that drop right?

yep yep yep

 

[MegaHurtz 10+ year member]

There is always a resistance when you are using any fuse, but whether or not this difference is noticable is a different story. Whether or not it would be worth taking the risk running an unfused wire is yet another story.

 

[audiolife 5,000+ posts]

if this is for a daily driver dont skimp on the safety. if for comp use you can make it "unsafe" when you get metered but when it comes time to drive home safety is bliss

 

[ghart999 10+ year member]

I never thought of not using a fsue, just wondered if it was a current killer or anything.

 

[skmfkr 5,000+ posts]

I think my voltage input is only like .2 diff from the batt to my amp, i wouldnt worry about it your not gonna hear a diff

 

[KaeZoo 10+ year member]

If you take a multimeter set on DC volts and connect one probe on each side of the fuseholder, it will display the exact amount of voltage drop through the fuseholder. The system has to be playing for this to work. If it's installed correctly and not defective, a fuse will never cause enough of a voltage drop to be audible, until it blows.

 

[audiolife 5,000+ posts]

If you take a multimeter set on DC volts and connect one probe on each side of the fuseholder, it will display the exact amount of voltage drop through the fuseholder. The system has to be playing for this to work. If it's installed correctly and not defective, a fuse will never cause enough of a voltage drop to be audible, until it blows.

in db drag every .1 decible matters thats why most that compete take the fuses out.