Multi Amp Install gauge wire?

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bbusbee

Member - Posts: 39

Joined: April 14, 2004

Location: United States

Posted: April 14, 2004 at 5:28 PM / IP Logged

I will be installing two amps that require a minimum of 4 gauge wire each. What gauge wire should I use coming off the battery if I want to run one single wire to the back of the vehicle and then use a distribution block to split off to each amp?

Thanks

minitruck_freq

Member - Posts: 4

Joined: April 12, 2004

Location: United States

Posted: April 14, 2004 at 6:15 PM / IP Logged

4 ga. for the main power and 8 ga. from the dist. block to the amps should be fine.

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pureRF

Silver - Posts: 619

Joined: July 22, 2003

Location: United States

Posted: April 14, 2004 at 6:25 PM / IP Logged

If a distribution block has fuses and you run one power wire do u add the amps of the 2 fuses and for the fuse close to the battery? and what are the fuses at the dis. block for?

dream it, build it, fiberglass it

doc t

Copper - Posts: 169

Joined: April 11, 2004

Location: South Carolina, United States

Posted: April 14, 2004 at 6:52 PM / IP Logged

they are there for another link in the safety chain.

they should not be larger than the fuses on the amps.

Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: April 14, 2004 at 7:51 PM / IP Logged

which amps are we talking about because it makes a difference, on the specs.

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customsuburb

Gold - Posts: 1,813

Joined: January 17, 2004

Location: United States

Posted: April 14, 2004 at 7:53 PM / IP Logged

bbusbee wrote:

Thanks

If the fuse size of both amps added together isn't greater then 600 watts RMS then you can run 4 gauge to the distrobution block and 4 gauge to each amp. If they are greater then 600 watts RMS then you need at least 2 gauge cable to the distrobution block and 4 gauge to each amp.

Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: April 14, 2004 at 10:21 PM / IP Logged

custom suburb, its not necessarly 600wrms thats what i asked the amps. i know for a fact that you can run atleast 1000wrms off of 4ga wire, even if it is 2 amps.

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bbusbee

Member - Posts: 39

Joined: April 14, 2004

Location: United States

Posted: April 15, 2004 at 6:39 AM / IP Logged

The amps are a Rockford Fosgate 851S and a Sony XM-DS1600P5.

This feedback is awesome! Thank you.

BBusbee

kevinbo5

Member - Posts: 37

Joined: April 13, 2004

Location: United States

Posted: April 15, 2004 at 10:49 AM / IP Logged

Is what minitruck_freq said OK to do? If the manufacturer says 4 gauge to amp, is it ok to run 4 to the distr. block and 8 gauge to each amp?

Sounds contradictory....

kgerry

Platinum - Posts: 3,455

This member consistently provides reliable information

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: April 15, 2004 at 10:58 AM / IP Logged

when dealing with potential line loss keep in mind that you are only running 8 ga. for about 6 to 12 inches, the rest of the cable is 4 ga. which should be sufficient.... the individual fuses in the distribution block should reflect the proper protection for each individual amp, whereas the primary fuse is there to protect your vehicle from burning down if you are running 2 60 amp AGU's in the distr block for example, then your primary should be at least an ANL 120, etc.

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

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