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16AWG fusible link

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david2005(at)abrahamson.n
Guest

Posted: Fri Jun 02, 2006 3:17 am Post subject: 16AWG fusible link

I am building an RV7 electrical system according to the Z-12 

architecture and want to make the fusible link from the aux 

alternator to the starter contactor depicted in the diagram.  Bob's 

online article about fabricating a fusible link and the B&C kit say 

that it only applies to 22 and 24AWG fusible links, whereas the Z-12 

diagrams lists a 16AWG fusible link.  Can't find a resource that 

explains how to do this.  Help?

Thanks all

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nuckollsr(at)cox.net
Guest

Posted: Sat Jun 03, 2006 7:17 am Post subject: 16AWG fusible link

At 07:11 AM 6/2/2006 -0400, you wrote:



 	  Quote: 	
		  



I am building an RV7 electrical system according to the Z-12

architecture and want to make the fusible link from the aux

alternator to the starter contactor depicted in the diagram.  Bob's

online article about fabricating a fusible link and the B&C kit say

that it only applies to 22 and 24AWG fusible links, whereas the Z-12

diagrams lists a 16AWG fusible link.  Can't find a resource that

explains how to do this.  Help?

Thanks all


	


    The "resources" are limited to the few postings I've

    made on the topic. I've often suggested that while fusible

    links are attractive for their simplicity and robustness

    leading to a very low cost of ownership. However, they are NOT

    a general replacement for fuses/breakers and should

    not be considered for any applications beyond those suggested

    in the Z-figures without some discussion.



    Fusible links have fusing constants on a par with ANL style

    current limiters. I.e. they'll carry many times their

    "normal" rated current for many seconds and in this case,

    the link WILL emit smoke and WILL require some over-sleeve

    capable of preventing it's high energy operation from

    damaging adjacent wires.



    Therefore, fusible links in the z-figures are noteworthy

    for their scarcity. Every place they've been shown has

    been considered for the failure mode effects that might

    cause the link to open along with probability that they'll

    EVER be required to operate. The note on the fusible link kit

    was not intended to limit their fabrication to the

    smaller sizes. The kit is supplied with red-PIDG splices

    which won't accept the 12AWG/16AWG combination cited in

    figure Z-16 and elsewhere. I think the fiberglas/silicone

    sleeving will work over the 16AWG link but you'll need a

    yellow-PIDG (10-12AWG) splice. The sleeving will have to

    go inside the insulation grip on the splice as opposed to

    over the outside. I think the sleeving will stretch to

    cover the outside of a blue-PIDG at the other end.



    I'll use them wherever it seems to make sense but

    suggest caution for expanding their use beyond those

    applications cited in the drawings.



    Bob . . .



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

      < What is so wonderful about scientific truth...is that >

      < the authority which determines whether there can be   >

      < debate or not does not reside in some fraternity of   >

      < scientists; nor is it divine. The authority rests     >

      < with experiment.                                      >

      <                            --Lawrence M. Krauss       >

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

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