Installing 2 x with 8 guage
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=35543
Printed Date: May 17, 2024 at 8:52 PM
Topic: Installing 2 x with 8 guage
Posted By: 94legend
Subject: Installing 2 x with 8 guage
Date Posted: July 13, 2004 at 3:43 PM
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 ?
Replies:
Posted By: Ravendarat
Date Posted: July 13, 2004 at 4:06 PM
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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Posted By: kgerry
Date Posted: July 13, 2004 at 5:24 PM
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
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: nickch
Date Posted: July 13, 2004 at 5:39 PM
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.
Posted By: kgerry
Date Posted: July 13, 2004 at 5:47 PM
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
Posted By: LqDFx
Date Posted: July 13, 2004 at 6:08 PM
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?
Posted By: xtreamcc
Date Posted: July 14, 2004 at 12:52 AM
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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