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Y splitter

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Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Sat Jul 06, 2019 7:09 pm Post subject: Y splitter

I was wondering if the practice of twisting 2 wires together and crimping the resulting wire in a ring terminal can be considered acceptable, even for standard certificate airplanes, for making a Y splitter.  If so, assuming that 2 wires to be twisted together are size 20#, should a red or blue ring terminal be used?

Thanks

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alec(at)alecmyers.com
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Posted: Sun Jul 07, 2019 3:38 am Post subject: Y splitter

See:

http://www.aeroelectric.com/articles/multiplewires/multiplewires.html



See also:

https://www.te.com/content/dam/te-com/documents/industrial-automation-and-control/global/1773464-1_QRG_PIDG.pdf

FREQUENTLY ASKED QUESTIONS:

Can wires be combined in PIDG terminals & splices? Yes they can as long total CMA (Circular Mil Area) and insulation diameter fall within specification.



Also, per NASA-STD-8739.4A Section 19.9:



Crimping wires into contacts or crimp ferrules is a method for splicing wires together without soldering. When crimping multiple wires into a contact or ferrule, the total circular-mil-area (CMA) of all the wires must be calculated into an Equivalent Wire Size (EWS) in order to select the properly sized contact or ferrule.



19.9.1 The following requirements apply for crimped splices:



a. The tooling verification process and the completed termination shall comply with all the requirements of this document for a crimp termination except as specified herein for jiffy junction devices.



b. The contact/wires size and crimp tool setting combination shall be developed and verified using the same requirements as for any machined contact (see 12.3.5).



c. The crimp ferrule or contact shall be sized equivalently with the calculated Equivalent Wire Size (EWS) or the next larger EWS if the calculated value does not exactly match a single wire size.





Don’t twist the wires together, they should go into the barrel parallel. I believe when you double area of a wire, the AWG goes down by three. So 2 x 20 gauge wires would be 17 gauge.



 



On Jul 6, 2019, at 11:09 PM, Argonaut36 <fmlibrino(at)msn.com> wrote:






I was wondering if the practice of twisting 2 wires together and crimping the resulting wire in a ring terminal can be considered acceptable, even for standard certificate airplanes, for making a Y splitter.  If so, assuming that 2 wires to be twisted together are size 20#, should a red or blue ring terminal be used?

Thanks





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=490084#490084

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John M Tipton

Joined: 07 Aug 2018
Posts: 45
Location: Devon - England

Posted: Sun Jul 07, 2019 8:56 am Post subject: Y splitter

And you still fuse for the the wire size ;(22awg - 3amp) although your using two 22awg wires that could be carrying 5/7amps



John



Sent from my iPad



     ----x--O--x----



 	  Quote: 	
		   On 7 Jul 2019, at 12:37 pm, Alec Myers <alec(at)alecmyers.com> wrote:

 

 

 

 See:

 http://www.aeroelectric.com/articles/multiplewires/multiplewires.html

 

 

 

 See also:

 https://www.te.com/content/dam/te-com/documents/industrial-automation-and-control/global/1773464-1_QRG_PIDG.pdf

 FREQUENTLY ASKED QUESTIONS:

 Can wires be combined in PIDG terminals & splices? Yes they can as long total CMA (Circular Mil Area) and insulation diameter fall within specification.

 

 

 

 Also, per NASA-STD-8739.4A Section 19.9:

 

 Crimping wires into contacts or crimp ferrules is a method for splicing wires together without soldering. When crimping multiple wires into a contact or ferrule, the total circular-mil-area (CMA) of all the wires must be calculated into an Equivalent Wire Size (EWS) in order to select the properly sized contact or ferrule.

 

 19.9.1 The following requirements apply for crimped splices:

 

 a. The tooling verification process and the completed termination shall comply with all the requirements of this document for a crimp termination except as specified herein for jiffy junction devices.

 

 b. The contact/wires size and crimp tool setting combination shall be developed and verified using the same requirements as for any machined contact (see 12.3.5).

 

 c. The crimp ferrule or contact shall be sized equivalently with the calculated Equivalent Wire Size (EWS) or the next larger EWS if the calculated value does not exactly match a single wire size.

 

 

 

 

 Don’t twist the wires together, they should go into the barrel parallel. I believe when you double area of a wire, the AWG goes down by three. So 2 x 20 gauge wires would be 17 gauge.

 

 

 

 

 

 

 

 On Jul 6, 2019, at 11:09 PM, Argonaut36 <fmlibrino(at)msn.com> wrote:

 

 

 

 I was wondering if the practice of twisting 2 wires together and crimping the resulting wire in a ring terminal can be considered acceptable, even for standard certificate airplanes, for making a Y splitter.  If so, assuming that 2 wires to be twisted together are size 20#, should a red or blue ring terminal be used?

 Thanks

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=490084#490084

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Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Sun Jul 07, 2019 5:15 pm Post subject: Re: Y splitter

Thanks to All for the very good information provided!

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