Power fuse connected to battery blows
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=21898
Printed Date: August 29, 2025 at 8:49 PM
Topic: Power fuse connected to battery blows
Posted By: No Remorse
Subject: Power fuse connected to battery blows
Date Posted: November 24, 2003 at 5:00 PM
I have a 1200 Watt Amp and every time I turn up the volume to my stereo the fuse that runs power+12v to my amp blows out.Does anyone know what it could be .........I have replaced about 10 fuses and still am lost. This really sucks I have no music to listen to! Thanks. -------------
Replies:
Posted By: bberman1
Date Posted: November 24, 2003 at 5:09 PM
What size fuse are you using? Also what amp do you have? And do you know how your speakers are wired to the amp?
Posted By: No Remorse
Date Posted: November 24, 2003 at 5:20 PM
The amp is a performance tecnique1200 with a size25 fuseconnected to the power.The fuse on my amp is not blowing but the power one is. I have my speakers bridged to the amp and they are two 10inch sony explodes.
Posted By: bfog99
Date Posted: November 24, 2003 at 5:21 PM
My brother-in-law had this same problem. He ended up having a short in his power wire. It ended up melting and smoking.
Posted By: bberman1
Date Posted: November 24, 2003 at 5:29 PM
If that amp put out 1200 watts rms you would draw about 93 amps of current which would defiantly blow a 25 amp fuse. However I don’t think your amp is putting out a true 1200 watts, so what I would do is add up the fuse ratings on the amp, and match that to the fuse on the + 12 volt at the battery. So if your amp has 2 X 30 amp fuses use a 60 amp fuse at the battery. Also what size cable are you using for your power and ground (just want to make sure they are the correct size)?
Posted By: No Remorse
Date Posted: November 24, 2003 at 5:51 PM
Thanks For The advice. So since my amp uses a 60 amp fuse I would use a 60size fuse for the one connected to my battery?The size wire Im using for the ground I think is 8 gauge or 6.
Posted By: bberman1
Date Posted: November 24, 2003 at 6:01 PM
Your amp has 2X30? Or are you using my example? But if your amp dose have a 60 amp fuse then yes use the 60 at the battery. Also from a 60 amp fuse, the power ratings are about 768 total watts rms 384 rms per sub. As far as the 8 gauge wire that is sufficient.
Posted By: No Remorse
Date Posted: November 25, 2003 at 2:57 PM
bberman1 wrote:
Your amp has 2X30? Or are you using my example? But if your amp dose have a 60 amp fuse then yes use the 60 at the battery. Also from a 60 amp fuse, the power ratings are about 768 total watts rms 384 rms per sub. As far as the 8 gauge wire that is sufficient.
 Thanks I bought a 60 fuse and now I can actually turn my subs up now.
Greatly Appreciated.
Posted By: bberman1
Date Posted: November 25, 2003 at 3:01 PM
|