Circuit Breaker or Fuse
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=76076
Printed Date: October 30, 2025 at 6:24 PM
Topic: Circuit Breaker or Fuse
Posted By: hellbass212
Subject: Circuit Breaker or Fuse
Date Posted: April 11, 2006 at 2:51 PM
I am wondering if anyone knows if it is better to use a circuit breaker or a fuse. I've heard that circuit breakers can be unreliable. Any suggestions?
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Clarion DXZ665mp,Lanzar 2000D,2 Powerbase Extreme 12",Pioneer 5.25" - TS-C503
JL Audio e4300,Fosgate Power 6x9,5 Farad Cap,2 Optima Yellow,205 Amp Alt
Replies:
Posted By: forbidden
Date Posted: April 11, 2006 at 4:39 PM
The only issues I have ever had with circuit breakers is when my installer accidentally overtightens the mounting screws and snaps off a mounting tab. I have had zero issues with breakers due to any other condition.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: kirktcashalini
Date Posted: April 11, 2006 at 7:06 PM
I have never even blown a fuse, But If i ever do I plan on getting one just because they are a pretty nifty device... Im taking your word forbidden that there good.  ------------- 99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)
Posted By: stevdart
Date Posted: April 11, 2006 at 7:28 PM
Think about this: you rely on circuit breakers in your house's main electrical box to protect the life of your family, your pets and all you own.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: Ravendarat
Date Posted: April 11, 2006 at 11:39 PM
how can one test the rating on a circuit breaker? I have a few of them but the ratings arent listed.
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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer
Posted By: kirktcashalini
Date Posted: April 12, 2006 at 11:43 AM
hey little question about amps... I know we use circuit breakers in houses obviously. but Most homes have 100 amp services, and yet a car amplifier can supply more than 100 amps. I know the difference between AC and DC power, and how it works, but are the amps the same? like, for example, you can power a electric stove with only 30 amps in your house, but a little amp that makes 300 watts would use 30 amp fuse in a car. This can not be the same power rating of amps in DC and AC, can it? I just cant see how the 2 compare... and also, would a house breaker work for a car in DC power?
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99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)
Posted By: geepherder
Date Posted: April 12, 2006 at 7:56 PM
Most car amps will not supply 100 amps, but some will draw that much or more. Amps are amps- it's a measure of current regardless whether it's AC or DC. The main distinction between the home and the car (other than AC/DC) is the voltage. Roughly 110-120 volts in the house (220-240 in some parts- dryers, etc.) and 12-14 volts in the car. So, a 300 watt home audio amplifier may only draw around 3 amps as opposed to your car audio amp's 30. Have a look at the pie chart here, it should help you understand better: https://www.the12volt.com/ohm/ohmslaw.asp. I don't see why a home circuit breaker wouldn't work in a car, but at the same time I would never recommend it- if you have a circuit panel outside behind your house, it withstands the weather. Also remember that insulation is rated to withstand a certain voltage, so using a car audio circuit breaker in a house would prove to be disastrous. ------------- My ex once told me I have a perfect face for radio.
Posted By: jb66
Date Posted: April 12, 2006 at 9:24 PM
When i installed my system i used this website https://www.bcae1.com/cirbrakr.htm it says that fuses are better, i think fot the main positive wire a fuse should be used but if there are any other fuses then i dont see why not.
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