How to Splice Wires for Electricians

This video will teach you how to splices wires as an electrician from scratch using NMD90 wire. It includes stripping the jacket (sheathing), stripping the insulation on the individual conductors, and finally, making a nice clean splice.

I actually make TWO different splices with you, so make sure to watch to the end. One splice is how to splice three wires, and one is how to splice four or more wires!

As mentioned, you need to build HAND STRENGTH. But a useful trick to help when you are dealing with #12 or #10 wire (and even #14 when starting), is simply to strip the wire a little extra long! You will see it makes all the difference when twisting the wires together.

Finally, make sure insulation is all lined up (not the end of the copper, the insulation once its stripped!). Doing so will allow you to bring your pliers close to the insulation, and gently mold the wires back to get a nice BRAID going on. Once a decent braid happens, you can be more aggressive and TWIST!

(Some other things that may be useful to know when you are wondering how to twist wires together is that this is typically called "Cutting-In" in the rough-in stage of the electrical process).

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DISCLAIMER ABOUT MY ELECTRICAL VIDEOS:
Do not do anything in my videos..
Follow all local electrical codes for proper installation and safety.
Make sure to get professional advice and get your work inspected by a proper electrical inspector in your area.

#WireSplice #Electrician #properjoint

[troyc]

This guy doesn't have that many subscribers, but unlike many other more popular channels - he actually knows what he's doing when it comes to wiring. This is the channel homeowners, hobbyists and anyone else interested in completing electrical wiring tasks correctly and safely should be watching!

[unfoldingcactus]

Genuinely surprised you don’t have way more subscribers. Extremely professionally shot videos with clear and concise explanations. How long has this channel been around for?

[NoName-efjq]

huh, I always spliced using the old 60° method with 2 pliers... good to see there's an easier way, tested it and doesn't come apart, no shaking or wobbling... so, thanks for the information.

[ChuckShadow]

Love this!! Im just now coming off 22 days straight doing trim out and receptacle install out of town... wish i found this 2 weeka ago. Thanks dude!!

[unfoldingcactus]

Love the channel. I always grab the tips when im splicing and that works perfectly, especially when I strip them longer so the part that gets scored by my lineman’s gets cut off anyway. Never seen someone splice from the very base of the stripped part.

[BkKeLz]

Really nice video.
I’d like to see this same video, but with 4 or 5 #12 wires. Or even a video on how you pack 4 12/2 wires in a box with a receptacle neatly.

[patc]

Excellent info, advice, and channel. Glad i found this. Solid practices unlike other much larger channels whongive dangerous advice. Thanks so much for this video and the clear and concise explanations. I'll be subbing for sure!

[danhalsey]

Really liked the video, useful. I think I will put a dot of white correction ink on the correct side of my linesman pliers for cutting spliced wire. This will prevent the inadvertent short cut wire splice

[cepterbi]

I live in the Netherlands and learned that if we untwist the cap, the metal should be still on the wires. twisting off the cap was the way to see if the splice was sound/good. It was a hard plastic cap.

[MrStreetballerOfficial]

Dude I was struggling with twisting the wires post splice/cutting the plastic parts off and its because my teacher showed us to do it by grabbing the tips of the exposed wire, excited to try this when i get a chance. Your awesome, subbed!

[sunyap]

Thank you sharing this awesome tip. I like to do things nice and clean. I’m on my 6th class of basic electrical class and this is one thing that frustrates me.

[patriotgaming]

You explain splicing way better than my instructor I like that you actually show how to do it thank you

[JuanNOnly]

I always try to cut the slice at an angle to make a point so that the wire nut twists on it easier. Hate splicing when you gotta do it ask day though lol my hands cramp up. Wagos are life savers on those days

[balvinmangrue]

New to your channel and I love it so far. Thank you for sharing your knowledge, you just earned a new subscriber! Cheers!

[Mandragras]

The information in this video is pure gold. And that splice at 12:36 was pure to watch. It shows what being a competent or experienced electrician (or both) looks like. And this splice right here is why I consider Wagos trash, you can never get the good stuff of a splice like this with a Wago. Maybe Wagos are the best excuse a lazy or incompetent electrician can come up with and there is nothing anyone can do to change my mind. Unless of course the client is willing to pay the extra cost when there is no benefit for them.

[stuartkorte]

Tried this today but didn’t have my Kleins and at a box. The biggest issue seems to be holding 4 wires even with each other. I have about 5” of wire.
Watching this it seems it’s best to do the wire nut first then attach the jumpers to the receptacle.

[Mandragras]

The black Wurth blades can cut wire insulation like using a hot knife to cut butter. It feels like they are better than a surgeon's scalpel. It's one of my most favorite things to do at work.

[stuartkorte]

Learned several enhanced tips, thanks.

[rogerb]

I've done electrical for 30 years and don't twist the wires before using the wire nut and I have never had a return call due to a failed connection. Twisting damages the wires and makes it a pain in the ass for the next person who has to service that box. Wire nuts are rated as a connection device and nowhere in the electrical code does it require the wires to be twisted prior to using a wire nut.

[biggig]

Great video! How do you handle situations where if a splice already exists in a box but the length of those wires are already pretty short and need to splice an additional wire to the existing? In your experience is there an easy way to splice the additional without having to cut? I'm all about getting cutting everything and starting from scratch but I do run into situations where there's not much wire left in the box. Thanks.