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SD-8 crowbar breaker

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kesleyelectric(at)chooseb
Guest

Posted: Wed Feb 25, 2009 6:55 am Post subject: SD-8 crowbar breaker

Bob,  

   

I have noticed that the z-figures that incorporate the SD-8 show a 5 amp breaker for the aux. alternator crowbar.  The instructions from B&C call for a 2 amp breaker to be used with the SD-8 OV protection.  As I recall, there has been some discussion in the past about nuisance tripping and upgrading the breaker size.  I know that the diagrams are suggested architecture only, not component or wire size, but I wondered about this.  

   

Tom Barter  

Kesley, IA  

Avid Magnum - wiring   

   

       [quote][b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Feb 25, 2009 8:39 pm Post subject: SD-8 crowbar breaker

At 08:51 AM 2/25/2009, you wrote:

  	  Quote: 	
		   Bob,

  

 I have noticed that the z-figures that incorporate the SD-8 show a 5 amp breaker for the aux. alternator crowbar.  The instructions from B&C call for a 2 amp breaker to be used with the SD-8 OV protection.  As I recall, there has been some discussion in the past about nuisance tripping and upgrading the breaker size.  I know that the diagrams are suggested architecture only, not component or wire size, but I wondered about this. 	


  The size of the breaker has nothing to do with nuisance

  tripping of the crowbar OV protection system. Either 2A

  or 5A will work. I standardized on the 5A for all these

  years because it's generally less expensive than the 2A.



 

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------



     [quote][b]

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