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4ga too much?

Old 02-07-2008, 09:32 AM
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4ga too much?

My First post and I need help deciding on an amp install kit.

I am assembling a modest system for my truck, I am currently only running 1 amp for the sub but I may add a 4 channel amp for the speakers depending on how it sounds.

Can I install 4 gauge wire now and use a smaller fuse, or install an additional smaller fuse close to the amp? (it's only a 200w amp so it wants a 40amp fuse).

Does this future proof me if I want to add another amp or is it a bad idea? Could I run two modest amps (200w + 200w probabaly) off of 8 gauge power?

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Old 02-07-2008, 09:44 AM
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Old 02-07-2008, 11:08 AM
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Always run bigger than you need because sooner later you will want to add more stuff. This stuff can get addictive and enough is never enough.
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Old 02-07-2008, 11:25 AM
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Wizard is right, i'd prob just go with 4 ga, you will, I repeat, yOU WILL get more equipment down the road, and you'll be glad you went big on the wire. saving you alot of work in the end.
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Old 02-07-2008, 11:28 AM
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Originally Posted by wiltshire559 View Post
use this guide to help you decide
Canadian Car Audio - Recommended Power and Ground Cable Sizes
4 ga good for 150amps, I doubt your alternator will put out that much... should be just what you need. But what do I know I used 1/0 gauge(I could arc weld with the stuff)! Now that's some impressive looking wire! No voltage loss there.
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Old 02-07-2008, 08:55 PM
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the fuse in the power wire is more or less to protect the wire (from melting/burning). the amp will have its own set of fuses to protect itself. so putting a small fuse in the positive wire to amp will only likit the power the wire will carry. Normally you would put a fuse inline that is rated at what the wire can handle.

hope that helps
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