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Fuses vs. Circuit Breakers

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lancegoddard(at)mac.com
Guest

Posted: Thu Nov 10, 2011 1:37 pm Post subject: Fuses vs. Circuit Breakers

In a recent email discussion with Myron Truex he suggested I get input  

from builders/flyers on their opinions of fuses versus circuit  

breakers.  It obviously makes sense to have some circuitry protected  

by circuit breakers and some not-so-critical circuits protected by  

fuses.



What have you done, and what - if anything - might you do differently  

if you were to start from scratch?  Also, physical location of these  

fuses and circuit breakers has importance as well.  Your thoughts?



Thanks,



Lance Goddard

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pilot623(at)gmail.com
Guest

Posted: Thu Nov 10, 2011 1:47 pm Post subject: Fuses vs. Circuit Breakers

I went with automotive type fuses all the way. The fuse blocks are mounted

under the map/glove box, hinged to swing out from under the panel for access

(but not in flight). I'd do it the same way again.



Jim



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briana(at)xtra.co.nz
Guest

Posted: Thu Nov 10, 2011 2:01 pm Post subject: Fuses vs. Circuit Breakers

Lance,



Why use expensive circuit breakers ? If they pop, doesn't that signify something, and what are you going to do ? Push them back in again - -  why?



On the otherhand, inexpensive automotive blade fuses serve the same purpose - - - they protect the wiring from some other malfunction. Mount them on inexpensive fuseblocks, accessible, but not while flying. If a fuse blows sort it out on the ground.



Read some of the stuff written by Bob Nuckolls about wiring systems and fuses.



I can sent a photo or two if you want.



Brian

XP, 912, 11 years and no fuse failures.





On 11/11/2011, at 10:35 AM, Lance Goddard wrote:



 	  Quote: 	
		   

 

 In a recent email discussion with Myron Truex he suggested I get input from builders/flyers on their opinions of fuses versus circuit breakers.  It obviously makes sense to have some circuitry protected by circuit breakers and some not-so-critical circuits protected by fuses.

 

 What have you done, and what - if anything - might you do differently if you were to start from scratch?  Also, physical location of these fuses and circuit breakers has importance as well.  Your thoughts?

 

 Thanks,

 

 Lance Goddard

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ghf4986(at)gmail.com
Guest

Posted: Thu Nov 10, 2011 3:44 pm Post subject: Fuses vs. Circuit Breakers

Lance,



We used fuses for each circuit, next to the rocker switch for the

circuit.  Each circuit has a light verifying the circuit and fuse.  I

carry color coded spares.  So far no problems what so ever.



Circuit breakers are expensive, and they are mechanical and can hang.

They are reliable, but fuses are more reliable.



Dennis Adams

M375CM



Sent from an IPad



On Nov 10, 2011, at 2:42 PM, Lance Goddard <lancegoddard(at)mac.com> wrote:






In a recent email discussion with Myron Truex he suggested I get input

from builders/flyers on their opinions of fuses versus circuit

breakers.  It obviously makes sense to have some circuitry protected

by circuit breakers and some not-so-critical circuits protected by

fuses.



What have you done, and what - if anything - might you do differently

if you were to start from scratch?  Also, physical location of these

fuses and circuit breakers has importance as well.  Your thoughts?



Thanks,



Lance Goddard

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dougwitkowski(at)netscape
Guest

Posted: Thu Nov 10, 2011 7:05 pm Post subject: Fuses vs. Circuit Breakers

Plus, fuses are more accurate.  If they are labeled 10amp, they will do that indefinetely.  Circuit breakers are a temperature device that are rated 80% of full load continuous.   90% will eventually trip.

 

 

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