Circuit breaker v Fuse
Submitted: Thursday, Aug 28, 2008 at 17:21
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Member - Alan H (QLD)
Installation instructions of brake controller say use a circuit breaker.
Installation of radio says use a fuse.
I realize the two bits of equipment are different but was wondering about the use of them. Could I use a circuit breaker on my radio instead of a fuse or a fuse on my brake controller.
What is the appropriate time to use a circuit breaker and what is the appropriate time to use a fuse???????????
Alan
Reply By: Member - Graham H (QLD) - Thursday, Aug 28, 2008 at 17:50
Thursday, Aug 28, 2008 at 17:50
My understanding of the two is that a circuit breaker stops an overload and resets afterwards good as in the case of your brakes.
Or not good in the case of your radio if the fault was still there and it happened again
A fuse blows and therefore you would have no brakes but would stop the fault recurring in the radio.
Someone will doubtless correct me on this.
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Reply By: Max - Sydney - Thursday, Aug 28, 2008 at 18:01
Thursday, Aug 28, 2008 at 18:01
Alan
The fuse gives best protection - something goes wrong and the circuit switches off till you change the fuse and hopefully fix the problem.
In the case of the brake controller, a total lack of brakes on the van could be a worry, so they recommend a self resetting breaker instead of a fuse. I'm with Serge - I doubt the value of a device that resets without the problem being fixed. However, that's what is specified and I guess it will stop the car wiring or battery from cooking if there is a short.
They are not expensive and you need to comply with manufacturers' instructions to protect your insurance in event of a problem, so just do it.
But use fuses for everything else because they force you to fix the problem before putting a new fuse in.
Max
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