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How To Identify Neutral Wire

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We teach you how to identify a neutral wire in a light switch. If you are thinking about installing a smart dimmer light switch or a smart switch it's a good idea to determine first if you have a neutral wire in your light switch box.
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We teach you what to look for to find a neutral wire and if you need one. Most smart light switches but not all smart light switches require a neutral wire.
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To Identify a neutral wire you need to do the following:
1. Turn off power to circuit at the breaker
2. Confirm power is off
3. Remove faceplate by removing two screws
4. Remove light switch from junction box by removing two screws
5. Pull light switch forward out of box to expose wiring
6. Look for neutral wire in the junction box, if you have a white wire inside the switch junction box you have a neutral wire. The switch in the video shown has a neutral wire.
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Опубликовано:

27 авг 2024

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Комментарии : 71

@dmanfabulous1922 8 месяцев назад

Perfectly clear and concise, saved me a call to an electrician. Perfect!

@stickysock 6 месяцев назад

This was invaluable advice to aid me in installing a smart light switch in my kitchen. I really didn't get the concept and importance of the nuetral connection for this application. I struggled to the point of giving up because of the three solid wires I'd need to join to the stranded wire of the light switch for the neutral connection. I used a Wago in place of the wirenut and finally finished the installation.

@sherry6894 4 года назад

Thank you for your help but as an electrician, this video would be more helpful had you spent more time on actually identifying a neutral wire. I’m sitting here seeking help because I have 2 purple wires and a red which Is why identification is important to me, I don’t care about a smart home wire when my house is newer. I care more about figuring out which one is neutral wire.

@Wavefront101 2 года назад

I have two white wires and one hot black. Voltage is same from black to both white wires. Seems like a hard video to find, I guess I will use an outlet testor (I use HT106B) which shows open neutral, open l1, l1-gnd reversed l1-neutral reversed or l1-gnd reversed, perhaps tone generator.

@tommymadux3646 Год назад

Are you working on a commercial light fixture? Normally purple is used as a dimmer control wire (24volts I think) and the red is a hot wire. What did you remove that you trying to replace?

@tommymadux3646 Год назад

This was for sherry

@tommymadux3646 Год назад

@@Wavefront101 how old is the house? One wire might be a switch hit leg that was not correctly marked. Is there a light in the curling? I bet one white and one black wire goes to the light fixture but both are hot just one is used for power to fixture and one returns it to the switch

@Nadyamantra 2 месяца назад

Doesnt he say it's the white one? 2:34

@Lgca26 15 дней назад

Thank you, answered my question

@OneHourSmartHome 7 дней назад

Happy to help!

@k3upikachu 2 года назад

yeah so all 3 wires in my ceiling are black lol. i was hoping for a video on how to actually identify them, not what color they are

@Fraxter3813 Месяц назад

Me too. Video was not helpful

@rperera5928 Год назад

Wow, very clear instructions. I was debating what type of switch to buy. Now I know exactly what I need. Thank You for the help.

@Tkeaney01 4 года назад

Awesome video. This is exactly what I needed to identify my neutral wire for smart switch installation. Thank you so much!

@OneHourSmartHome 4 года назад

Great to hear!

@ev1900 Месяц назад

This video was exactly what I was looking for. Thanks for making this video ❤

@Co5micT 2 года назад

This video is great if your wiring was done by a professional using the proper coloring cables to identify. I have some sockets home-wired by the previous homeowner done as cheaply as possible with the same color wire for everything. What kind of voltage should you be getting from a neutral wire? How to measure with a multimeter? Thanks!

@coypatton3160 2 года назад

You get no voltage from a neutral wire to ground, but approximately 120 volts from the hot wire. The hot (line) wire will be connected the switch. With power turn on (use caution) it will have the approx 120 volts to neutral and ground. Also you should have little to no resistance from the neutral to the ground (this may not be the case if wire is from a sub-panel).

@hanscarlsson7276 2 года назад

Never assume white wires always are neutral. Do proper testing if you are not 100% sure.

@fahmywaleed 2 месяца назад

Thanks for your video, i am installing 2 way smart switch, one switch does not have neutral the other has wht and blk bundled together . I identified all wires and traveller wires but not sure about those 2 if they are neutral or not. My home is built in 98

@ChrisWilliams-vm1do 2 года назад

When wiring a smart switch in a box with more than one switch (usually looks like a gaggle of wires) does it matter which neutral wire you use? Are there separate neutral wires for each switch? I usually just locate a bundle of white wires. Half the time my switch I install gets power, half the time it doesn’t.

@Nadyamantra 2 месяца назад

You also need one for the levitron humidity setector switch but I guess this would be considered smart?

@user-cw7pl2tr8h 9 месяцев назад

If I have three light switches in the same box, how do I identify each neutral wire connected to each switch?

@CarlosGarcia-ls4hn 2 месяца назад

It would have been good for you to show the left side of the switch, to where the white wire is attached. You can't tell from looking at it directly.

@bwg2020 8 месяцев назад

very clear description thank-you.

@DominickPeluso Год назад

This helped me out of a jam. Thank you!

@outthemoney3361 3 года назад

Neutral is always needed to bring electricity back, just some are ran straight to light fixture

@njsongwriter 3 года назад

Neutral wire often enters the box where the fixture is located but years ago it did not always extend to the switch location. A black and white wire often went from the fixture to a switch box. One wire took the power to the switch and the other wire brought the power back to the fixture. The white wire was supposed to be painted black or marked with black tape indicating it was a hot wire. No neutral wire is needed for the switch to do its job BUT since 2011 a neutral wire is required by code to be present in the switch box even though it may not be used. It's there just in case someone wants to install a timer or smart switch in the future.

@jeffreybuskey2329 3 года назад

Hello. Great video's. I just purchased a brand new home. I open the switch box that has 3 switches (3 gang box). There is no white wire. I noticed there is a red, black, and copper. I noticed 2 wires (red and black has a white piece of tape groups them together) and other individual black wires. How do I determine which wire is White/Neutral? I've never seen this type of crap in my life. I've opened and replaced a lot of light switches. Any help would be greatly appreciated. Thx

@shikhanshu 2 года назад

I too am in the same situation. Waiting for an answer.

@rafaelpun Год назад

Thanks. Was sweating balls because I was not sure about the white wire.

@irenecase1933 5 месяцев назад

I don’t have any problem finding white hot wire but I don’t get how you have two blacks for a single pole switch. My wire is one black one white and one green (hot neutral and ground). Is this enough to make feint work?

@unclebobrobinson9503 Месяц назад

If you turn all the breakers of I can’t see to install anything!

@balbutie Год назад

Thank you

@georgecorser 2 года назад

Well explained

@jccuchvjvj 8 месяцев назад

I guess I don't have a neutral? I want to connect 2 gang wifi dimmer with 3 cables. The voltage between cables: 19,5 V between yellow and blue 172,5 V between brown and blue 226,3 V between brown and yellow

@ebnftl2272 2 года назад

Thanks! 👍👍👍 Now I get it. I think?

@damienhosenfeld 3 года назад

Hey, I love the board you're using there. I want to build one that has a socket on it also so i can preload my smart switches, sockets, and lights all from the same board without having to make multiple trips to my breaker panel. Have you made a video on how to do that? If not, can you show us how to build it?

@barryvancleve 2 года назад

The Caseta as well as other switches that do not require a neutral, also do not work directly with Alexa. They require a separate automation hub for interconnectivity. Is this necessarily true for ALL switches that don't require a neutral?

@D_A_M-091 Год назад

The cync by ge dimmer that says "no neutral" doesn't need a hub, and works with Alexa.

@Lycan_24_7 2 года назад

Thank you!

@Doggieman1111 Год назад

Thanks, so helpful!!

@pattyverdusco4804 3 года назад

Great informative video. Answered all my questions!

@Mummyfier87 Год назад

Can you wire the smart switch neutral wire to the hot and load wires?

@brandonsherfield6982 2 года назад

Thanks for this video man👍👍

@menswearhous 6 месяцев назад

I have 1 black/red/white all connected to my switch and ground wire in the back capped off on a metal box. Is the white wire still neutral?

@surferdude642 3 месяца назад

Do you have a smart WiFi switch? He mentions this starting at 2:45.

@petersachs764 3 года назад

I replaced an existing light switch with the BN-LINK Heavy Duty 60-Minute in-Wall Spring Loaded Countdown Timer for my bathroom fan. My 1980s house in Massachusetts has neutrals and ground wires in each location however this mechanical dial timer wall switch only has two wires and no ground. Am I violating code or should I return it for a switch with a ground or perhaps a switch that has both ground AND neutral wires?

@RaymondYocum-uw5hd Год назад

What's the red wire?

@MaryMerryMarry 4 года назад

Thank you! Very clear!

@SqueamishPuppet Год назад

Why would my switch have one white one black and a ground? Does that mean I have a neutral even if there aren't 4 wires

@ac_tv2050 2 года назад

What if I dont have a neutral wire? Can I still install a smart switch? Thanks!

@WakeUpSmellTheCoffee 2 года назад

How do you identify the neutral wires if it got spray painted over inside the box. All the wires got sprayed over when they painted the walls. I can scrape them off to see the color of the wire, but there has to be a better way.

@sirprize8572 Год назад

I know this comment is a few months old but I just had this problem myself. The way I identified my neutral wire was by process of elimination. Trace the hot wire coming from your switch back to the cable it comes into the box from. Ignore any other cables coming into or out of the box for now and just focus on that one. There should be several wires splitting off from that cable--at minimum, you should have the hot wire you just traced back, and the ground wire which is usually bare. If it too is sprayed over, just verify it also joins up with the hot wire in your switch. If there there is a third wire coming out of that same cable, and it doesn't run into anything else, that's most likely your neutral wire. Follow that wire and see if it plugs elsewhere into your switch or just twists up into a cap. If it goes into a cap, it's likely unused because it's your neutral wire. Of course, make sure to scrape the paint off and check anyways, because it could also be a red wire which is not neutral. Just leaving this here in case anyone else has the same question/issue.

@appleguy10181 4 года назад

Which one should I buy if I do not have a neutral cable

@DonnyStanley 4 года назад

You'd want the Lutron Casetta smart light switch kit; just note that they are a bit more expensive than others, and do require the Lutron hub to function whereas some smart switches function without a hub over WiFi directly.

@JorgeCalder 2 года назад

It is NOT true that if you have a white wire that it has to be the neutral wire. Many homes have just a black Hot wire and a white Load wire with NO neutral wire.

@WonboShim 4 года назад

If I want to connect a neutral to the smart switch, do I unscrew the wire nut, and splice the wire from the smart switch with the two existing wires with the nut?

@jstrat121 4 года назад

Wonbo Shim I believe so,yes

@coypatton3160 2 года назад

Might have been nice to have explained that code now requires a neutral wire in a switch box and to cite the year of code that put this in effect. I have not looked up the year so I will not cite the year, however, if making such a video, I would gave researched and not left it out or quoted from memory.

@dannydee9919 3 года назад

I have black, orange and yellow. Yellow is my hot wire.. the other 2 I do not know. How do I identify my black wire and orange wire. Note: the above pertains to a light switch that is located in my garage.