How to splice a wire
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- Опубликовано: 27 фев 2018
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How to splice a wire
In this video we look at how NASA splices wires. If it's good enough for the space program, it's good enough for me.
NASA Standards: www.hq.nasa.gov/office/codeq/d...
937D Soldering Station: amzn.to/2t3isiZ
22 AWG Hookup Wire: amzn.to/2oEn6hZ
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FAQ:
Me: Paul, 49 from USA
Education: United States Navy, University of California at San Diego B.S. E.E., University of Pittsburgh M.S. E.E.
Experience: United States Navy STS, Bayer Intnl Process Engineer
Current: Teaching college freshmen electrical engineering at a small community college in the Pittsburgh Area.
Health: BAD (Congestive Heart Failure)
Hobbies: Electronics, flying, amateur radio, music (classic rock) 
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Thank you for this! I'm a dump truck driver learning to do my own lights wiring. It's stuff I never had to do in decades of tractor trailer work as a company driver--because our fleet mechanic was so darn good. In dump trucking we must bang the tailgate to release clay from bed. The resonant impact of slamming a 400+lb. tailgate destroys crap job tail light wire splices.Something so "minor" as a missing turn signal is exceedingly dangerous to the public (seven fatalities on this hwy job site this year). Much appreciation for a really good video!
Paul, thank you for your electronics tutorials. Always appreciated.
Thanks for sharing your knowledge, Paul!
A+ my man, I actually just watched another video about a NASA/Linesman's splice so your video was a great reminder.
Best video on How to do a Nasa Splice / Lineman's Splice on the Internet! THANKS!!!
I have watched old NASA videos . on how they wanted engineers to solder components . for space flight. it can amazing how complex just soldering a component was. all the cleaning and not touching. I bet it drove ppl crazy . when they was learning. especially if they already worked in electronics. thanks for the videos. sometimes when we don't do things in a while. we forget what we know. I'm working on a lithium battery charger discharger capacity meter board. to test lithium batteries. using tp4056 and a computer power supply. basically a bunch of crap on a piece of peg board. with wires soldered everywhere. great video.
I know look back at my soldering connections with deep shame. Thank you for showing me the way. I love everything about the videos. Keep up the good work.
Thanks for sharing. Hope you feel better
I asked my colleague for some solder, been practicing. I've hopefully inspired one or 2 of my students to take Digital Electronics in the future
Thanks brother nice to have real knowledgeable folk passing it on to many people watching someone's video and making there own and pretending to be a expert
Great! Now I know what I've been doing all these years. I never knew the name or all the specific steps of the exact standard. I haven't tinned 100% of the time, but otherwise, it's just the correct way as far as I knew. We learned this technique in our vocational electronics class. Our instructor was in the Navy as a tech in the 50's/60's. Definitely a never break connection. The wire would probably break before any part of the joint. I've had odd looks from people, if anyone is paying attention when I use this, but I just tell them, hey, this will never fail.
Western union .. telegraphic company named this type / almost similar connection , no soldering ..
Thank-you for creating this video; very useful!
Thanks for pointing to the standard. I appreciate that.
How kind are you ... thank you for sharing, much love wrapped around an air hug xx
looks like you just got a new subscriber lol =P this is incredibly helpful as a welder and just someone who fixes their own tools. thank you, keep it up
Thanks so much, this was quite helpful. Very well explained & demonstrated!
Good video. I’m an automotive technician that specializes in electrical diag. I do a lot of wire repair and this is very close to what I have been doing for years. It’s a little different with stranded wire but I didn’t know this was the special technique.
I was looking for solid wire soldering and this helped.
Well done. Somewhat new at this, and I’m good with stranded wire but was struggling with the solid wire. Liking this technique. Totally worth throwing you a buck for this video alone, but knowing I’ll probably be back for some more tips, I’ll go join your patreon. Thank you sir.
I like your demonstration style. Subscribed and £1 well spent.
Brilliant presentation using the note cards. I recognize the work and appreciate it dearly.
This was a great video. It's nice to hear from someone with experience.
Thank you
I've been doing it wrong all these years, thanks Paul for putting me wright.
Good info, btw I use a small butane torch to quickly shrink that tubing, heat guns are so loud, bulky and heat up everything else ;)
Thanks for your sharing, dear Paul. :)
Nice wrap splicing Sir, the solder wire is discernable, thumbs up!
We conducted IPC training also here in the Middle East.
Always known this as a linesman's splice. Works as well dry too, wire originally would be copper awg 16ish and the splice formed with a simple little pocket size jig to wrap the "coil" tight. Could use it to join two ends of a 60 foot telegraph wire mid-span and no solder!
My ticker is faulty too - AF, CHF, 3+ MIs, I have a pacemaker+ ICD.
Kameel - doc always looks at hands because heart failure = excess fluid and poor circulation stops nails growing well, liver and kidney function is reflected by the colour and condition of skin ... so your hands are a valuable indicator to overall health.
...watched again--I noticed a lot of skill when you cut those wires flush before soldering--these seemly little things are BIG on spotting experience / skill!
Nice sharing... thanks !
thanks for mentioning about your hands. This really made me think about how I act on the net and I'm gonna try to remember this when I feel like putting a negative comment.
I am currently working on my senior project for mechanical engineering. We are developing a shape memory alloy experiment as part of an aerospace payload. The experiment is regarding how joining of SMA's could potentially effect their properties. We are looking at friction stir welding or ultrasonic welding as potential joining methods but I think using a NASA standard splice in addition would be interesting. Thank you for the informative video.
When he said "I've been seeing a lot of new subscribers lately..."
It sounded like he was about to say "which means a lot of you have been breaking the third rule of fight club"
thank you brilliant tutorials
Also called a Western Union splice. Thanks for all the great videos over the years!
Thank you for calling it by its proper name. I think Western Union was using this long before NASA was even a thought.
Nice splice, what size heat shrink did you use? I was in the automotive trade for 40 years and always used this splice. I think they call it a western union splice.
Thank you. Well done! Think I can now make a repair on old sewing machine with crumbling wiring.
commenting to help the channel. great an informative video, cheers
Explained perfectly . Sorry for the idiots asking stupid questions!! Awesome video
Listen to her.
I can see why NASA uses this technique. I do like the use of dielectric grease (as shown in a different video) before covering with heat shrink tubing though.
Who'd have thought a splicing vid would be this interesting? good stuff to know. Electrical and mechanical integrity of the joints obviously takes priority above all else - but I would love to know how much additional weight this method added to a mission's payload when each ounce/gramme is paid for in fuel used. The cost/benefit will always be in favour of reliability, but just something I pondered. Anyone know the spec of NASA solder? would it have been and is it still 60/40 or some exotic mix, bearing in mind the temperature extremes and vibrational shock? Another great vid Paul, sorry to hear of your health, I hope that "losing yourself" in electronics is an effective way to "put it to one side" for a while. Respect and kind regards from a cold and snowy U.K.
Love the guide, been using lineman for years on inline splices (Grew up on a ranch, we used this technique to splice barbed wire...I would assume that's where the name comes from). Twisted splices drive me nuts just like you. Also, am I the only one that hates using bare gator clips. >.< I try to put heat shrink or hose so it doesn't cause crimping on the shielding.
Very well said, thanks
Thank you
Nice work, thank you.
Thanks
Cool, more NASA standard ways of working please. Thumbs up
That's the only one I'm familiar with.
This method was invented for telegraph wires in the 1800's
Thank you for sharing your knowledge. forgive me if this is askes previously but why don't you put flux on the wires?
Excellent lesson! 👍👍
Thanks
Haha thanks I've been doing all my wiring myself but i always did it the wrong way and even now to this day but I just bought a new soldering iron from Amazon to give soldering another try after watching quite a few videos now before I couldn't get it to solder correctly but I didn't know the proper way to tin and etc, so I gave up and went back to doing the wrong way like you first demonstrated and then wrapped it in electrical tape. Now I'm going to try to redo all electrical connections tomorrow on my Cadillac Escalade Esv cause I wired in a lot of aftermarket lights, trailer wiring and couple wires had corroded underneath and I found the broken connections and to my lights. I wired em with no solder and just twisted like first showed then wrapped in electrical tape. All these videos been helpful. Oh I have question too. Is it better to tin a wire before putting a ring connector or any terminal before crimping the terminal on?
Great job ! Subscribed !
Thank you. I post new videos every day. Let me know if there is something you'd like me to cover.
Thank you, I’ve never heard of the Nasa splice
It's nice to see someone qualify helping others ¨correctly¨.
Thanks
Thank you. short and to the point how to do something correct
It may sound petty, but you mentioned "flipping" the iron to get rid of rather large amounts of solder from the iron. This works GREAT in situations that call for it...also avoids lots of solder in the sponge and "brillos"
Yep. That's how to do it. Heat gun instead of open flame to shrink the tubing, but you covered that. Well done. >Charlie
Meh, open flame works just fine.
Thanks for sharing, Paul would you use this same method on a multi strand wire?
Yes
So this is new, I’ve never heard of a NASA splice, there are other splices that we use at JSC according to the J standard. All of our splices have to be wrapped minimum 6 wraps. Both wires need to be pre-tinned and flown together prior to wrapping. The wraps cannot overlap, they can touch but you need to be able to see the wire strands and the wraps clearly. The distance from the splice to the wire insulation has to be the diameter of the wire on both sides of splice. There can be no pits or discoloration after the excess wraps are cut. Lastly there is indeed heat shrink that will slide over the wrap. For class one and flight quality will inspect the work and if not acceptable it will have to be re-worked. The wire used as the wrap has to be a single strand from the wire you are using from the drawing, unless allowed to use bus wire.
NASA AKA paper mache standards 😂 good luck with your CHF! pray you are doing well. Thanks for the video.
Thanks :)
Thanks I’m finally going to do it correctly
Top notch soldering, I see so many pros who don't wait for the part to come to temp and will touch the solder and iron, or something halfway between. It drives me crazy every time.
Thank you. I learned in the US Navy's Basic Electricity & Electronics school in San Diego in 1988
Priceless knowledge. Thanks for sharing. While this will work with single/solid core wire, what about the multi strand wires? We dont use singles cores here :(. Thanks and GL :)
nice work, looks like the western electric splice to me.
It is
This is why I didn’t got to go in space! :) Thanks for the video!
Newbie here and was looking for proper tips and techniques. I was just wondering what part was the pre-tinning? Was it at 3:56?
It was the wire on both sides that were tinned. That being said they should have flowed together before introducing more solder to the wires, but I didn’t see that happen. If they are tinned before hand, they will melt/flow together before adding solder. Just seen this video today, sorry for late response. Take care.
Learned that splice in High School back in the dark ages, about the time Kennedy said we'd put a man on the moon. This is the only splice I use if there's enough wire. Way better than a butt splice. I didn't know NASA had a standard for the linemans splice. Cool to learn new things now and again. Once again very good video, thsnks!
Thanks
Goog job
Can you show a heavier gauge stranded wire. Mine always end up a mess. Maybe I'm not using enough length?
27 years at the KSC as an electrician and never spliced any wire, we always replaced it.
what if you use a wire nut because thats what you do when making an ac circuit i am an hvac tech so thats what i learned to do in school but thats different than electronics
What about for stranded wire?
Cool.
I'm sad to admit I almost always do the stick together twist method. I find this uses way too much wire, and I'm often reusing old crap salvaged from other projects/products.. but I agree entirely that it is far superior. Anything that moves I twist together straight instead of at a right angle. I will use this from now on, thanks!
I noticed you used solid wire instead of stranded. I've noticed that stranded wire seems to absorb more solder when pretinning and it becomes nearly impossible to bend. Would you use some form of leverage other than your hands to splice.. say... 16AWG stranded?
Yes I'd use pliers for sure.
Hope youre still around! Does this work well for wires that are not one piece, where the wire is multiple strands making it up?
It will work
Note to self: Use the NASA splice in the future.
Thanks for sharing this technique.
Nice job! And thanks for not showing us your feet ;-) But seriously! Excellent video
I want to thank you very much for showing the correct way to splice wires. I am a jewelry maker, sometimes working with fine 28 gauge wires. This works well for me and even my beads will slide over this method of splicing. I do not use solder, however, this is a nice and strong connection. Thank you again.
I learned how to do this splice in a vocational high school in the late 1960's. We called it a Western Union splice. The story is that it was developed for splicing telegraph wires.
Yep, Western Union invented it. NASA spec'd it out in the 60's. Either name will work.
Spliced a few cables as an electrical fitter in the power station but they were slightly bigger!
Slightly, you say?
Ever so slightly Paul! ;-)
It's easier with larger wires
Hi Paul, neat work there. By the way are you the same "Paul" that had a site a couple of years ago called "Adventures in Welding", I used to watch it, and then one day it just stopped.
May want to out the shrink wrap on one side before soldering 😮
That splice without solder is Western Union splice, developed for telegraph in the 1850s .
Were your connections pre tinned? If I used strand wire do I pre tin also or no?
If you are using solid core then you can tin. Don't tin stranded, you need them flexible so they are able to adapt to each other.
@@learnelectronics Gotcha, since tinning is rule #1 it didn't make sense for stranded wire. Thank you for the response and sharing your knowledge. Greatly appreciated!
Stranded wire will mop up the solder by capillary action anyway, so tinning them when splicing is a bit counter-productive. Better to just tack them together by reflowing the solder if they're pretinned.
AKA short style Western Union splice.
I didn't know you are from the Pittsburgh area. I sorta am too. I was born in Uniontown and grew up in Point Marion. I'm sure you've heard of Uniontown (it's about 50 miles south of Pittsburgh) but maybe not Point Marion. Point Marion is about 8 miles south of Uniontown.
Sure, heard of Uniontown
I wonder if this works with using say 2.5mm2 stranded building wire for 240vac (Australian single phase mains voltage) rather than using a jbox and standard connector? Hmmmm. It would obviously be too slow but if you've got limited space like in a conduit, this might be better than a double sided crimp.
It would be cheaper than using a crimp splice and possibly better, what do you think Learnelectronics?
I know this sounds cliché but if it's good enough for space travel, its gotta be good enough here on earth. Just make sure your local building code permits it.
Ive always done it to half NASA standards i guess. Instead of crossing wires and making an X to start as you do, I make two hooks and fold the wire back on itself. This way is probably better overall because my way you have to make sure its wrapped tight or you end up with 2 eyelets instead of wires solid
Paul would you use the same splice on stranded wire?
This splice is for solid core, you could make it work with stranded, but it would be difficult.
pre-tinning stranded makes it behave *similar* to solid for many uses.
Very true.
I would have put two pieces of heat shrink over the splice--if that one hits something it will tend to nick the single heat shrink cover--1st do the first layer just as you did, but with a shorter length of tubing to slightly overlap the wire insulation. Then slide a longer piece of the SAME SIZE shrink tubing slightly overlapping the 1st (shrunken) piece--and shrink.
That's good technique.
I guess I always heard this in school as the western union splice. We even got to see it in a VERY aged book.
Western Union, lineman's, NASA. All the same.
Even NASA standard calls it a western inion splice. There are many different NASA standards for wire splices. That’s just one of them
I bet they didn't suggest pre-tinning in the Western Union version, did they, Mr Know it All? Go back and check your "aged book".🤣 Haaaaa
Beautiful, imagine having to break open a concrete wall just to get to a badly done splicing fixed a decade after building a condo, and just because you pulled too hard on a socket...
Why the f*** does annyone want to know anything about your hands?
what are they watching???
by the way great video's , keep it up!
Thanks my friend
Because his hands are all that are shown on camera, and he sounds like he ran up three flights of stairs so folks think stereotypical fat nerd in the basement. But I'd probably breath like that too if my heart couldn't get the blood around fast enough.
In my case I am prone to atrial fibrillation (heart rhythm gets all jacked up with partial/incomplete beats and drops my blood pressure until I'm light headed) doesn't effect my weight though, just means I need to be cautious of potential triggers like excess caffine, booze, stress, and sleep deprivation. (diagnosed at 28 and was in good enough shape to bicycle 200 miles in one day, [normal] resting heart rate of 50.) Mine self resets with a bit of proper rest but most folks need a shock, might be because I'm younger than most.
Sorry To Hear, Wish Yuo The Best................ Peace.
Maybe put your Patreon link on every video.
It is in the description.
heat cant be applied to the wire insulation
They must have you on prednisone
The gap between the coils worries me, reduces the strength? also, off topic single stranded copper wire is a no no,
IMHO have no redundancy against metal fatique that can easily cause serious problems in environments vith
24/7 vibration, problems that can be intermittent and very hard to track down
Hi Paul Have you ever considered showing a wee photo of yourself now you have 10K+ subscribers. Am a great lover of the show and always wondered who is behind the voice.
Maybe when I get to 100k. The college I work for does not want me "giving away" knowledge. So I'm on the down low...
Wow, are they still in the dark ages?
The school? Absolutely. I originally wanted to record my lectures. They said no way. Lol
Suggestion: add a patreon link in the description..
There is one.....but here it is again www.patreon.com/learnelectronics.
Loved your fat finger intro 🤭🤗 Subscribed and 🔔 clicked!
Great video, You can give NASA the credit if you want, but that splice goes back to the old days, it is better known as the "Western Union". Used on Telegraphs
It’s also in the J standards class 3, which includes the standard for all military and government soldering. It’s not a nasa standard, it’s a class standard 😉
Was the pre-tinning, part of a typical Western Union splice? I think not.
@@kccodex8931 That's correct, the "western union" was only the way they were twisted together. They didn't use solder at all, just electrical tape. I'm sure the corrosion factor was an issue.
Very helpful - you're a good teacher. What's your opinion of this modified approach for stranded wire (ruclips.net/video/M5ZeVzKnteI/видео.html)? Difference is you don't pre-twist wires so they can fan/flatten when coiling around each other. Also means you can't pre-tin wires. Seems sound to me but wondering your pro opinion. Thanks
Thanks for the video. The breathing is distracting. Suggest you fix that in future videos...