Installing 2 x with 8 guage

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94legend

Silver - Posts: 237

Joined: June 27, 2004

Location: United States

Posted: July 13, 2004 at 3:43 PM / IP Logged

is it possible to run 2 amps using 8 guage only

i.e. running power wiring to fuse holder, fuse holder to distro block , then distroblock out to 2 amps . all 8 guage ?

Ravendarat

Platinum - Posts: 2,806

Joined: February 23, 2004

Location: Canada

Posted: July 13, 2004 at 4:06 PM / IP Logged

The amps would have to be very small, no more than 20 amps of current each, but ya it can be done.

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kgerry

Platinum - Posts: 3,455

This member consistently provides reliable information

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: July 13, 2004 at 5:24 PM / IP Logged

sure, as long as you maintain the proper amperage rating for the cable you are using.... my rule is anything below 75-80 amps you're ok with 8 ga ( depending on the length of run )..... anything over go with 4 ga..... as long as the combined current draw of the 2 amps you are running is below 80 amps and you're running it ( your power cable ) about 15 feet or less you should be ok.....

if you're ever unsure it's best to pony up for a thicker gauge.... why do your gear an injustice??

Kevin Gerry

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Classic Car Audio

since 1979

nickch

Copper - Posts: 50

Joined: June 01, 2004

Location: New Zealand

Posted: July 13, 2004 at 5:39 PM / IP Logged

yeah.. even tho i'm only running a 50WRMS x4 amp now i wouldn't think twice about having 4 ga wire to run to it. Firstly, you'd be sure that there wont be any overloading problems and secondly, it makes life easier when u want to upgrade or add in a second amp.

kgerry

Platinum - Posts: 3,455

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: July 13, 2004 at 5:47 PM / IP Logged

my thoughts exactly.... i tend to oversell/upsell power cable as a rule because it makes life so much easier in the future

never fails that a week after you run a length of 8 ga. the customer comes in having decided he wants to add another amp

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

LqDFx

Copper - Posts: 69

Joined: July 10, 2004

Location: Indiana, United States

Posted: July 13, 2004 at 6:08 PM / IP Logged

I just installed a Lightning Audio B1.300.2 Amp in the car with 4 Gauge wiring running from the battery to the back. Then I used a dist block down to 8 Gauge to the amp. I am planning on getting a pair of Lightning Audio B1.150.2 amps to put in there also. Do you think that the 4 Gauge wiring is good enough for that draw?

xtreamcc

Silver - Posts: 467

Joined: March 24, 2004

Location: United States

Posted: July 14, 2004 at 12:52 AM / IP Logged

dig, 4 awg wiring is good till about 150 amps depending on the distance. 15-17 feet is fine, over that its best to drop to 2 awg or lower.

You'd be installing one 300watt and 2 150 watt amps, which is only 600 watts max, dropped to 14.4volts and thats only a little over 40amps, you'd be find with even 8 awg so you'll be well within your limits with 4.

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Installing 2 x with 8 guage

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