4 gauge power supply

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jerryfreeman

Member - Posts: 8

Joined: September 20, 2006

Location: United States

Posted: September 28, 2006 at 4:10 PM / IP Logged

I have a 4 gauge power kit from fosgate which comes with a 100 amp fuse in it. Im wiring it to supply power to my punch 600 watt mono block amp, which has two 30 amp fuses on it. Is the inline 100 amp fuse to big for my amp?

jonathancullen

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Joined: September 22, 2006

Location: United States

Posted: September 28, 2006 at 4:19 PM / IP Logged

from what i know, (not as much as alot of people here) no, the 100 amp fuse just takes 100 amps before it will blow, from a short. the 100 amp fuse doesnt mean it sends 100 amps to your amp. you have nothing to worry about with your wiring kit. if more then your amp fuses can handle gets to the amp without blowing the 100 amp fuse then the fuses on your amp will blow.

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jettagli03

Copper - Posts: 311

Joined: January 16, 2005

Location: United States

Posted: September 28, 2006 at 5:45 PM / IP Logged

Good to know. Most people in my past have told me to match it to my amp. Matching it to the wire seems right. You learn something new everyday.

j_darling2007

Copper - Posts: 210

Joined: January 21, 2005

Location: United States

Posted: September 28, 2006 at 5:51 PM / IP Logged

The advantage of matching it to your amp is so the fuse on the wire will blow sooner in the event of a short, offering a higher grade of protection. You always want to try to get as close to the fusing of the amps while staying under the current load of your wire.

Jacob

There are 3 kinds of people in the world, those who can count and those who can't

jerryfreeman

Member - Posts: 8

Joined: September 20, 2006

Location: United States

Posted: September 28, 2006 at 10:22 PM / IP Logged

Thanks for the info, If I run a 30 amp fuse inline will I be starving much needed power from getting my amp?

i am an idiot

Platinum - Posts: 13,674

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: September 28, 2006 at 10:44 PM / IP Logged

Should we let him know that he needs to mount the fuse at or very near the battery?

Flakman

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Joined: April 25, 2005

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Posted: September 28, 2006 at 10:49 PM / IP Logged

jerryfreeman wrote:

Thanks for the info, If I run a 30 amp fuse inline will I be starving much needed power from getting my amp?

No, the fuse does not restrict current. It is merely there to fail before item it is meant to protect. The fuse at the battery is there to protect the wire (and car) from burning up. The fuse in the amp is there to protect the amp. If the fuse restricted current, it would already do it at the amp.

"A $400 piece of equipment will always protect a $0.25 fuse by blowing first."

The Flakman

I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

aznboi3644

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Joined: May 01, 2006

Location: United States

Posted: September 28, 2006 at 11:20 PM / IP Logged

jerryfreeman wrote:

Thanks for the info, If I run a 30 amp fuse inline will I be starving much needed power from getting my amp?

Um....if your amp is fused at 60 amps...why would you put a 30 amp inline fuse??? You'll blow that fuse in a second when you crank it.

Flakman

Copper - Posts: 365

Joined: April 25, 2005

Location: United States

Posted: September 28, 2006 at 11:43 PM / IP Logged

Good point aznboi...I missed that one.

The Flakman

I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

aznboi3644

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Posted: September 29, 2006 at 12:17 AM / IP Logged

Cause of amnesia?? lol

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