Amp power wire

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jepherz

Member - Posts: 24

Joined: August 18, 2003

Location: United States

Posted: August 22, 2003 at 9:20 AM / IP Logged

I have a rockford punch 360 driving a 12 sub and I am putting it a USAcoustics 85x 4 watt amp for the speakers. I have 8 guage power wire running into the back of my car and am wondering if 8 guage will be enough. Also, how can i tell what size fuse to be using? I will have one at the battery and one on each connection in the distribution box.

Thanks again,

Jepherz

"Screw nitrous, I'd rather be blown."

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: August 22, 2003 at 9:30 AM / IP Logged

You have 700 watts total, I would suggest that you use a 4 gauge cable however you can get away with using an 8 gauge cable https://www.the12volt.com/info/recwirsz.asp As far as the fuse goes 700 watts will draw approximately 55 amps.

jepherz

Member - Posts: 24

Joined: August 18, 2003

Location: United States

Posted: August 22, 2003 at 3:59 PM / IP Logged

Doesn't it say in one of those charts that 700 watts would draw over 100 amps?

just checking

"Screw nitrous, I'd rather be blown."

speedwayaudio1

Silver - Posts: 879

Joined: March 18, 2003

Location: United States

Posted: August 22, 2003 at 9:22 PM / IP Logged

go at least 4awg if not 1/0 awg.

Big Dave

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eurotek

Copper - Posts: 58

Joined: July 31, 2003

Location: United States

Posted: August 23, 2003 at 7:42 PM / IP Logged

no, 700 watts would not draw over 100 amps..

at 12.8 volts it would take about 54.6875 amps like bberman said.

i agree that 4 ga is more suitable, as the 8 ga may cause your amps to run a bit warmer than you would want them too, depending of course, how much actual continuous current you would be drawing

ituneyou

Member - Posts: 40

Joined: August 20, 2003

Location: United States

Posted: August 23, 2003 at 10:29 PM / IP Logged

if you want to get away cheap, just add another 8gauge power wire for the amp you're adding and remember to fuse it at the battery and a 50 amp fuse should be enough for each amp.

steve

A man has got to know his limitations

skahide

Member - Posts: 27

Joined: August 02, 2003

Location: United States

Posted: September 22, 2003 at 10:41 PM / IP Logged

I have a 2400W Legacy amp and wasnt sure what gauge wire i needed. It'll be pushing 2 15' subs. I was told by a friend that if i got an extension cord and pulled one of the 3 wires out i could use it as a amp power wire. He says because it is made to hold AC current it will be able to hold the 2400W from the battery to the amp. Is this true? If not what do i need to do so that im getting all the needed power to the amp?

italnpimp59

Silver - Posts: 427

Joined: August 26, 2003

Location: United States

Posted: September 22, 2003 at 10:52 PM / IP Logged

ok first of all....do not use an extension cord as a power cable! that is ridiculous...matter of fact...smack your friend for me! second of all....that amp will not truly put out 2400 watts. but i would recommend 4gauge wire. and third of all, there is not 2400 watts going from the battery to the amp...the watts are going from the amp to the subs!!! voltage and amperes of current go from the battery to the amp!

skahide

Member - Posts: 27

Joined: August 02, 2003

Location: United States

Posted: September 22, 2003 at 11:29 PM / IP Logged

I live out in the country so the closest thing i have for car audio is Wal Mart. So i need to get the most heavy duty amp set they have? And what gauge wire do i need to go from the amp to the speakers? These speakers have two sets of wire connectors, one set on each side. What does that do for me? Ive never had any speakers over a 12' and have never seen speakers with two sets of wire connectors.

Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: September 23, 2003 at 1:12 AM / IP Logged

speedwayaudio1 wrote:

go at least 4awg if not 1/0 awg.

1/0ga for his set up would be rediculious. 2 ga wire for that set up would just be wasting money.

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