Circuit Breaker or Fuse

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hellbass212

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Joined: February 22, 2006

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Posted: April 11, 2006 at 2:51 PM / IP Logged

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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Posted: April 11, 2006 at 4:39 PM / IP Logged

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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kirktcashalini

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Posted: April 11, 2006 at 7:06 PM / IP Logged

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. Circuit Breaker or Fuse - Last Post -- posted image.

Circuit Breaker or Fuse - Last Post -- posted image.

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stevdart

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Posted: April 11, 2006 at 7:28 PM / IP Logged

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.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Ravendarat

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Posted: April 11, 2006 at 11:39 PM / IP Logged

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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kirktcashalini

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Posted: April 12, 2006 at 11:43 AM / IP Logged

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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geepherder

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Posted: April 12, 2006 at 7:56 PM / IP Logged

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.

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jb66

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Joined: March 15, 2006

Posted: April 12, 2006 at 9:24 PM / IP Logged

When i installed my system i used this website

http://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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Circuit Breaker or Fuse

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