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2 Fat Wires on a single terminal post?

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tsts4

Joined: 06 Aug 2007
Posts: 167
Location: Tampa, FL

Posted: Tue Sep 21, 2010 9:41 am Post subject: 2 Fat Wires on a single terminal post?

Hi,

What's the best way to mount 2 fat wires on a single terminal post on the battery contactor?  Do you just clock the lugs so they lay flat one on top of the other or should a spacer (ie like a plain nut) be placed between the lugs in order to physically separate the wires along the post?  Or does it even matter?



Thanks!

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Todd Stovall
aka "Auburntsts" on EAA and VAF
RV-10 N728TT -- Flying

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Posted: Tue Sep 21, 2010 11:00 am Post subject: 2 Fat Wires on a single terminal post?

Todd,



If it were me, and I wanted it to be functional, look good and be safe I

would find a terminal connector that would fit both wires. Crimp and

solder. That not moving. That setup will place less stress on the

terminal connector than having two ends doubled-up.



Glenn E. Long

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tsts4

Joined: 06 Aug 2007
Posts: 167
Location: Tampa, FL

Posted: Tue Sep 21, 2010 11:17 am Post subject: Re: 2 Fat Wires on a single terminal post?

Hmmm.  I could see doing that for say 18-20AWG size wires, but I'm talking about a 2AWG and a 4AWG on the same post.  Is doing that common for fat wires?  I could be mistaken, but I don't thinking combining them into a single lug is an option.

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Todd Stovall
aka "Auburntsts" on EAA and VAF
RV-10 N728TT -- Flying

longg(at)pjm.com
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Posted: Tue Sep 21, 2010 11:48 am Post subject: 2 Fat Wires on a single terminal post?

Todd,



If you mean do they make a connector to fit 2 such wires, that would be

a yes. Whether that suits your installation setup...



Glenn E. Long

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tsts4

Joined: 06 Aug 2007
Posts: 167
Location: Tampa, FL

Posted: Tue Sep 21, 2010 11:56 am Post subject: Re: 2 Fat Wires on a single terminal post?

Thanks Glenn.  You happen to a have a source?  None of the usual aviation sources carry anything like that so I'm guessing Mouser, Digikey, or similar?  Also does the connector have any special nomenclature that would help in narrowing the search?



Thanks again!

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RV-10 N728TT -- Flying

Allen Fulmer

Joined: 10 Jan 2006
Posts: 79
Location: Alexander City, AL

Posted: Tue Sep 21, 2010 3:06 pm Post subject: 2 Fat Wires on a single terminal post?

AC 43.13-1B, chapter 11, page 11-76, has several sketches of lugs connected

to various bolts, studs, etc. Depictions of installation order of washers,

lock washers, lugs, etc. I didn't look for similar data on connections to

contactors but I'll bet the book has something to say about that.



Allen Fulmer

RV7 working on cowling

N808AF reserved  



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tsts4

Joined: 06 Aug 2007
Posts: 167
Location: Tampa, FL

Posted: Tue Sep 21, 2010 3:29 pm Post subject: Re: 2 Fat Wires on a single terminal post?

I re-read Chapter 11 before my original post and didn't come away with a definitive answer (except the max limit for terminating wires at a given terminal is 4).  I think clocking the lugs so they don't interfere with one another with a terminal boot over the lug on top is probably the I'm going to go unless this is a violation of acceptable practices.

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Todd Stovall
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RV-10 N728TT -- Flying

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