I think I'm screwed

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Vh3i55u
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Postby Vh3i55u » Tue Mar 18, 2008 8:45 pm

haha, ok

thanks everybody for all your help!
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Nigel
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Postby Nigel » Wed Mar 19, 2008 6:28 pm

this is what can happen if you run too large of a fuse. Wires overheat and melt, and stuff catches fire.

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--m--
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Postby --m-- » Wed Mar 19, 2008 10:13 pm

Batteries have enough amperage to pop a 150A fuse before the wire catches fire. I could see if you were running an 8 or 10 gauge cable with a fuse rated higher than what the wire was rated for but instances where the wire fries before the fuse are far and few between.
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96s10lover
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Postby 96s10lover » Thu Mar 20, 2008 2:50 am

and it looked like that guy had a few more wiring concerns then just one fuse
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Nigel
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Postby Nigel » Thu Mar 20, 2008 5:37 pm

yeah, likely, those are what I call "worst case scenario" pictures. As in, if you REALLY mess up, that's what can happen.

Nigel
'03 S-dime ext. Cab.
Dropped 3" all around
Shadow billet grill
De-Trimmed/De-Badged
18" Beyern Type Five's in Hyper Silver
Nexen N3000 245/45ZR18 rubber
Eurolite clear tails
clear corners
Truxedo Truxsport Tonneau Cover

Alpine CDA-7998 source unit
Clarion SRS 1686 6.5" comp set up front
OZ Audio ME 12.4 in a 2 cube ported box at 34 Hz
JBL GTO 601.1 II Sub amp
JBL GTO 75.2 II comp. amp
12 sq. ft. Dynamat Extreme on roof
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nismo
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Postby nismo » Thu Mar 20, 2008 6:57 pm

That's a door-jammer's end result. As long as the wire has enough capacity, you can take the bare end of the cable, and short it to ground...you'll see a big spark, and that will be it.

Eric
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s3sqguy
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Postby s3sqguy » Wed Apr 02, 2008 5:26 pm

You can start a car on fire with a 18ga wire....don't forget you only might have a small amount of wire touching at the short. I'd say the fuse it comes with is the max you should use for normal use. If you can run a smaller one that is good. However if you run two amps at say 40A each and put an 80A fuse on the battery...and no amp fuses you can get 80A to one amp or the other. Fine if they have their own fuses but not good if they don't. A fuse will also blow at a higher amperage than it is rated for but not much you can do there. For my .02 if I had two 40A max draw amps I would fuse them at their 40 each and put a 100 on the battery. I go a little extra there because if they get warm in use they like to generate problems, and I hate having to dig under the hood and screw with stuff when I am busy with other things. The 150 should work ok if everything is installed properly, think of fuses as insurance and going lower while still filling your needs gives a little more insurance.

Another issue is that a high side amp will typically never take its max draw while a sub amp will. So if you have mid/tweeter amps running you can cut their needs down in the total. Only midbass might get up there in draw. If you really want to know test voltage and see what kind of drop you are getting, check fuse for heat after hammering on it. There are other ways to test loss, you only need enough power and fuse the rest.
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flak_monkey
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Postby flak_monkey » Wed Apr 02, 2008 6:54 pm

this thread is dumb. GET A LOWER VALUE FUSE, don't risk it. No point in arguing about it.
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s3sqguy
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Postby s3sqguy » Thu May 08, 2008 9:35 pm

flak_monkey wrote:this thread is dumb. GET A LOWER VALUE FUSE, don't risk it. No point in arguing about it.
LOL, you condensed my whole post into 18 words. :D
>Boston comps, Alpine HU & EQ, kicker 5ch, 4 12s IB<
>Swapping amps next as well as more deadening.<

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