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heavy wire question

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fvalarm(at)rapidnet.net
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Posted: Sun Apr 10, 2011 9:46 am Post subject: heavy wire question

Think  Z-13 here but other architectures probably apply.

  

 The  battery is connected to the contactor in this case with a 2awg wire.  The  battery is also connected directly to the battery buss with a much smaller wire,  say 14awg.  

  

 What  is the best practical way to connect two wires to the same terminal of the  contactor?  Two crimp connectors (ring terminal) do not seem to  fit well together on the terminal ( I want the terminals covered with those  silicone boots too).  I would like to crimp the two wires inside the same  crimp terminal but they won't both fit.  Should I cut some of the strands  off the larger wire to make room for the smaller wire?  The next size crimp  connector looks a little bit too large to accommodate both wires but I  could "over-crimp" until they are very snug but the connector looks a little  mashed. Which is the best way to connect two dissimilar sized wires to the same  terminal?

  

 I have  a similar application on the "out" side of the contactor where a 6awg wire is to  connect with a 2awg wire on the same terminal.  Looking for a reliable,  simple and elegant solution.

  

 Thanks.

  

 Bevan

   [quote][b]

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ceengland(at)bellsouth.ne
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Posted: Sun Apr 10, 2011 10:37 am Post subject: heavy wire question

On 4/10/2011 12:43 PM, B Tomm wrote:      	  Quote: 	
		                       Think Z-13 here but other             architectures probably apply.

        

       The battery is connected to the             contactor in this case with a 2awg wire.  The battery is             also connected directly to the battery buss with a much             smaller wire, say 14awg.  

        

       What is the best practical way to             connect two wires to the same terminal of the contactor?              Two crimp connectors (ring terminal) do not seem to fit well             together on the terminal ( I want the terminals covered with             those silicone boots too).  I would like to crimp the two             wires inside the same crimp terminal but they won't both             fit.  Should I cut some of the strands off the larger wire             to make room for the smaller wire?  The next size crimp             connector looks a little bit too large to accommodate both             wires but I could "over-crimp" until they are very snug but             the connector looks a little mashed. Which is the best way             to connect two dissimilar sized wires to the same terminal?

        

       I have a similar application on             the "out" side of the contactor where a 6awg wire is to             connect with a 2awg wire on the same terminal.  Looking for             a reliable, simple and elegant solution.

        

       Thanks.

        

       Bevan

       

     	
     If you crimp both in the next larger connector, you can fill the     next-larger connector with scrap wire(s) before crimping, then clip     off the excess scrap. Avoids reducing the current capacity of the     larger wire, & enables a 'normal' crimp.

     

     Charlie

      [quote][b]

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nuckolls.bob(at)aeroelect
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Posted: Sun Apr 10, 2011 10:45 am Post subject: heavy wire question

At 01:43 PM 4/10/2011, you wrote:

  	  Quote: 	
		   Think Z-13 here but other architectures probably apply.

  

 The battery is connected to the contactor in this case with a 2awg wire.  The battery is also connected directly to the battery buss with a much smaller wire, say 14awg.  

  

 What is the best practical way to connect two wires to the same terminal of the contactor?  Two crimp connectors (ring terminal) do not seem to fit well together on the terminal ( I want the terminals covered with those silicone boots too).  I would like to crimp the two wires inside the same crimp terminal but they won't both fit.  Should I cut some of the strands off the larger wire to make room for the smaller wire?  The next size crimp connector looks a little bit too large to accommodate both wires but I could "over-crimp" until they are very snug but the connector looks a little mashed. Which is the best way to connect two dissimilar sized wires to the same terminal?

  

 I have a similar application on the "out" side of the contactor where a 6awg wire is to connect with a 2awg wire on the same terminal.  Looking for a reliable, simple and elegant solution. 	


   Using contactors with longer studs is the

   general fix. When I was selling the S701-1

 [img]cid:.0[/img]



   I shipped it with thin, brass top-nuts but even with the

   standard nut, the RBM/Stancor part had a longer stud

   than the Cole-Hersey parts . . . and would generally

   take up to 3 terminals.



   Contactor posts are indeed preferred fan out 

   points for distribution of power but dealing with

   the short studs on some contactors is problematic.



   If push comes to shove, you can replace the bottom

   nut with a thin "jam nut" and get some more exposed

   stud. This is less risky with modern versions of

   these parts. 

 [img]cid:.1[/img]



    The internal contact surface is held in better alignment

    by bosses on the molded insulator. I may have a quantity of these

    nuts left over from those times. I'll dig around in the

    moving boxes as yet unpacked.



 

   Bob . . .

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