Heating and Bending PVC Conduit - BENDING 90s, OFFSETS, and BOX OFFSETS
Someone recently asked me if there’s a way to bend PVC conduit or if someone makes a bender or a tool to get a proper bend. In this episode we’re going to cover how I do it. There are specialized tools that some electricians use to do this, such as a sock, a spring, and a heated pad/blanket. I don't do any of that, but it's just because I don't have any of those tools. Any way you get it done, is a good way to do it.
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When working with PVC conduit electricians do one of two things when bends are involved. Either:
1) we will buy “manufactured bends” like pre-bent “90’s, 45’s, and 30’s”
2) we will use a heat gun to manually bend the conduit to fit the application.
Manufactured bends are often sold in the same aisle as the PVC conduit itself, and come in several angles. However, sometimes the job requires a slightly trickier bend to be made so we need to do it by hand. Often times pre-manufactured bends are too large, or create too small of an offset so it’s time to break out the heat gun!
To bend PVC you need to have either a high-powered blow dryer or an actual “heat gun” at your disposal. These can be bought online or at your local Home Depot. The model I have (and prefer) is a Wagner Furno 750. It has a digital display and will heat up to 750watts. Not only can you hold it like a gun to heat the conduit, but you can set it upright on the ground and roll the pipe with both hands. Not many models out there have this functionality.
The second thing to have nearby when bending conduit is a bottle of water or a hose. When heating PVC conduit it becomes very maleable, but it does not stay in the position you bend it without waiting quite awhile - while holding it in the desired position. One way to speed the drying process up is by splashing cool water on the PVC to set it instantaneously. CONTINUE READING AT: www.electricianu.com/podcast/...
#heatgun #bendingpvc, #bendingconduit #pipebending
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Пікірлер: 333
Dude, you saved me so much trouble, I had a pole barn built and I am doing the electricity myself. So i don't have to but i wanted the open walls to look Clean. I had purchased 3/4 sch 40 Pvc I was trying to use different types if 45s or 90s, non of them gave the result it needed. I Ordered the heart gun you use and it came in today. I set up a dummy 6by6 and 2 by 6 and it worked amazing. Thanks so much for this knowledge, not only is going to look sweet, its also going to save me 30$ even after the heat gun purchase. Thanks again, YOU ROCK
I love your channel. Seriously. Your videos have taught me so much the past 2 weeks alone... On top of the fantastic lessons you provide, your video and audio is recorded and composed so well too! Man, you're the best. You seriously take stress out of peoples lives and make their life better with your talent for teaching. Thank you for taking the time to do this!
I had no idea that this was possible. I've bent steel conduit before (50 years ago) but thought that PVC was impossible. Five minutes with a heat gun and I have a custom offset bend that fits perfectly and even looks good. Thank you very much!
In my country, Iran, we put something like a cable or a water hoze inside the pvc conduits before bending it with heat and after we bend it, we pull it out. It gets the job much easier and neater
Hey Dustin this is Tubbs I am an Electrician in KC. I just passed my TX journeyman Electrician exam Today! Yes it’s been a goal of mine for awhile but I freckling got it done! Love you videos, keep up the good work and thanks for helping us to become better Electricians!! 😎
@oliverlawrence8036
2 жыл бұрын
Congratulations! I'm sure you've well earned it. Good luck
Loved your video I'm a sparky in Australia and we have bending springs that go inside the conduit for bending without using heat . They are available from 16mm to 25 mm and in heavy duty and light duty springs. Also when I was a first year apprentice in 1973 I was told to put dry sand inside the conduit where you were going to bend to keep the inside fair uniform then wash it out with water
@manganiphiri4331
4 жыл бұрын
Sand does work if you don't have a spring bender.
@derronjoseph1408
2 жыл бұрын
Not from Australia but Trinidad and Tobago,almost every part of the world that uses PVC conduit uses a spring bender,spring bender saves time unlike heating it takes a while
I've only ever used pvc conduit and after years of using it you can easily make various offsets and bends with the 20mm size by working it while pulling it over your knee. The spiral metal benders are also a plus to help you. If you bend by a heat gun have a spray bottle near to lock it in at the angle after heating it.
Am an avid DIYer. This is an absolutely very timely post! Was trying to figure out how to ti transition from my underground 1" conduit to a ½" leading to boxes without using multiple, if any, connectors/joints. This helped tremendously. Thanks-great job!
Hey brother great video. I’ve primarily used a box heater specifically made for heating pvc conduit which works well once you get into larger size conduit, but I completely understand using a heat gun for smaller sizes in a pinch.Also if I’ve had a specific type of bend I was trying to make, offset, kick, 90 etc... I’ve bent a piece of emt to what I need as a template and once the pvc was heated molded it to the emt to achieve the desired bend. Just some thought. Keep it up
@terrenceboylanjr
2 жыл бұрын
good idea
In a pinch I’ve used the exhaust pipe of the running truck to bend PVC.
Hey Dustion keep makeing vids man! Ive only been doing this for a year a year or so, and you vids have fast tracled my education in this feld. I'm doing stuff sone 2 2-1/2 year guys cant do I do it well and right. Thanks and yes torches are the best way to go.
Good video. I teach trade in NYC we use a bender on the ground with a heat gun. The bender is for the angles. Laid flat on the ground. I noticed people mentioning the hot box. It’s great if you can afford it. However, if your not doing a lot of PVC and your in a bind you must know how to bend small diameter PVC without a hotbox. Anyway good video.
Again a great video full of information, keep up the good work.
Pliable is exactly the word you wanted "the quality of being easily bent; flexibility." nailed it. Also nailed it with the video. Now I'm gonna try a 22ish degree bend on a piece of 2" thanks!!
Freezing or setting a bend by cooling it with water can also be done with a spray bottle and rolling the tube like a glass bower does while heating also speeds the process. I've seen boiling water also poured into a PVC pipe to bend it and flattening of the tube is nearly unavoidable but a steel bearing on a cable the nearly the same inside diameter can be pulled thru it to round tubing out again while hot then cooled. Indeed these kind of balls and cable was often used when bending pipe because the inside curve often deforms the most during bending.
We kept all sizes of PVC 90s along with 45's on our truck. I have bent PVS for unusual bends that always turn up. Besides the torch I have used a heavy duty heating pad made for heating PVC.
When bending 90' s found it helpfull to draw 2 marks in pencil so u don't waste time heating unneede area. Like to have a few rags with cold water to cool bends. Nice to have a plactic face mallet to tap small kinks out. Had to use a torch to bend a 90 in 2" PVC middle of winter outside. Took forever. If you do burn a small area ( brown mark) sotchbrite will remove it. Never used a bender for PVC. Thanks for another great vid.
Love your videos. My current project is a building with a real corrosive environment. In one section, all conduit is schedule 80 pvgc and non metallic boxes and condulets , even the strut straps, and anchor bolts are fiberglass / plastic. Its crazy. Heat gun and hot boxes are the way to go. I have seen guys bend 4 and 6" by pouring a can of glue on it and setting it on fire.. o_0
I used a ready heater to heat the pvc when building my shop. Wouldn't want to use it in the summer but worked awesome. Took less than 30 seconds per bend.
Great video I usually use 90 fittings or offset pieces most likely use hot box or hot blanket for PVC pipes great demo on how to use other methods to get the job done I’ve been on jobs where both hot boxes and blankets broke down and everyone was standing around looking at each so now I know new way awesome lol
Once used a electrical stove top element cause I had no torch or heat gun at hand and it worked very well. The large heating area even helped ;-)
I love the way you kick ass, keep up the great work 👍 bro.
question for my electrician career. ive been a navy electrician for 5 years. i got my usmap completed which is just 8000 logged hours for my apprenticeship and i got my carrer studies certificate in electrical wiring but what kind of job can i get coming out of the navy? will i start off as a journeyman? should i join a union? what will my salary look like?
Thanks man I follow all your videos to give me more ideas for my channel Good Job keep doing it
when do you tie the neutrals together on a multiple gang box with 3 ways?
I've been bending PVC for a long time and a few methods have worked filling the pipe with Trice and that helps to keep the radius smooth taking a piece of BX wire the largest diameter of little fit down the PVC so it acts like a bending spring or simply just having the right size of bending spring to put inside the pipe and for the Box offsets a piece of clam molding to push down on while you got a stick or piece of BX inside the pipe gives you just enough to get that half-inch or so up to the Box opening I have also tried putting hot or boiling water in but that becomes a pain unless you got a furnace or boiler heating system nearby to get the water from it does work but you have to swap the water out a couple times
Excellent demonstration!! Thank you!
Hi Dustin. No more ep. 25? I wanna watch more of your videos. It's very informative and fun.
I have actually placed the PVC into my trucks exhaust pipe and it worked to make a small offset.
@mrpanda2655
5 жыл бұрын
Noice
Wow, you guys need to get a spring. We use them in Ireland and Australia. So much easier. What you do is way to much hard work
@MetrologyEngineer
3 жыл бұрын
What do you mean a spring? I’ve never bent PVC pipe, but I assume you’re referring to something that goes over the pipe to get a smooth bend.
@dushaunnmorgan3388
3 жыл бұрын
A spring bender is a tool used to bend pvc
@Coolio_za
2 жыл бұрын
Even here in South Africa we used spring
@johnnorton7817
2 жыл бұрын
@@MetrologyEngineer see Robert Pennington comment
@MetrologyEngineer
2 жыл бұрын
@@johnnorton7817 Cheers mate.
Greenlee heatbox/hot box works wonders for 2in pvc. And spring cold bender got em from 1/2" to 1 1/4" is nice too.
How you like that tech bag i have a klein and been thinking on taking the step up in the tech bag and also the jacket is it the heated Milwaukee and how you like it
Great video, will this procedure work with 1-1/4 PVC for a 3" offset?
Thanks for your videos
Great vids, will be watching more of them fo sho.
good point about the heat gun !
It takes all of 30 seconds with a bending spring
A lot of times we don't purposely shortcut(the box offset) its just because we did not know any better. But now that I have seen the offset tip that won't happen if i ever do one. Thanks. (I was here looking for tips on repairing a line of pvc outside my house because of a new fence.)
I work with a union shop (power tools supplied) and we got this 'hot box' bender. It goes from 1/2" to 4" pvc. It works great. You just need to rotate it a few times and the box does the rest. Its like a 4 foot box in length for nice gradual bends. *Greenlee product
@kennethcarroll5420
5 жыл бұрын
union shops have the best training, NJATC!!!
@havox112
5 жыл бұрын
Yes I am going to carry a $1000 hot box in my service van to do PVC bends once a month.
@frankchinigo907
5 жыл бұрын
I
@frankchinigo907
5 жыл бұрын
Takes too long,time is money
@HowardPaulblasingame
5 жыл бұрын
BOMBCRAZYInc 4" we use a propane torch, large area tip very fast
Excellent video... I had a question about connecting PVC conduit to an outdoor box from the bottom. Do you need to make it water tight and if so, how do you accomplish this? Thanks
@9o1OuTdOoRs
2 жыл бұрын
Did you ever find a solution to this? I recently failed and inspection for using a male pvc adapter and was told i needes to use a myers hub which i will then use the same male adapter to connect to it so kinda defeats the purpose if you ask me
Great video!
Thanks for the video =)
Good shit man, thank you! One thought with doing specific angles for offsets: if you want to be more precise, you could mark out your center of bends and draw out your angle on the floor or a piece of cardboard, then line your pvc up with it. Either using an angle finder or with tangent (theta) = rise/run kind of math. Cheers!
@PureSleepCompany
Жыл бұрын
I do something similar, mark a wood board then put in a few screws as guides. Heat the pipe and pop into the guides.
Wouldn't heating up the pipe then using the same conduit bender as we use for metal conduits(just with much less force) work for making a perfect 90° PVC conduit bend?
We had to offset 3" sch 80 and used a salamander heater. Just keep it moving and take your time.
That music though... I was waiting for Dirk Diggler to come in and interview with Julianne Moore for that sales job... bow Chicka wow wow
does anyone know, what pvc cutter did he use?
For my electricians out there. Do you guys think it's good to start working on a company that make panels, switchgear boards, etc. Job title is wireman but I wouldn't work under a journeyman. Btw I have no experience just school cert. Sw Thanks
That heat gun looks unreal!
13:27 The reach for the heat gun as it turns itself off tells me you've been doing this awhile 🙂
Also you can enlarge the hole of box to make fix it am i right?
So I figured I'd give this a try. Made 7 "fittings" so far - no trip to store needed. All by hand, no jig or fixture or spring, or sand or anything else. Heat gun, gloves, hands. (I also had a running hose outside for quick cool down)
I'm most impressed with how long he can kneel without killing his knees or having his feet fall asleep. when I was starting out I used to carry a bucket when I did outlets. made it 1000% easier
@eddiew2325
3 жыл бұрын
How do you kneel on a bucket?
@firstnamelastname-td2in
3 жыл бұрын
@@eddiew2325 flip it upside down and sit on it
@zachfoss4152
3 жыл бұрын
Wouldn't that put you way too far above the plug to see?
@wompstopm123
3 жыл бұрын
i carry around the part of a weight bench that you lay on in my van and use it as a knee rest. be nice to your knees while you are young and you will have them when you are old
You can cleanly bend PVC by first filling it with sand and then heating it. I have also bent rigid copper tubing by filling it with sand with heating only when larger sizes require such.
You can heat it up and put it in a pipe bender. The bender will cool it down some so when you put the PVC in the bender must do the bend fast. In South Florida I can almost just put the pipe in the sun and in an hour or so it will bend. But that only works on hot sunny days. Gray pipe heats up fast in the sun, but need to turn it to heat it all around. If you know you need to do some bends later put some out to get hot and do other things until it is hot. I saw one nut put some out in the sun most of the afternoon, and he bent it so the ends would meet. Don't know why anyone would need that but that is how soft it became.
That box offset part would help me a lot to pass my certification exam for electrical installation. Btw, i am from the Philippines.
any problem with putting the wire in there before u heat and bend??? i have some 6 guage that im trying to run in this plastic conduit
Yup, like so many other non-Americans, we use bending springs in the UK. Cheap, easy, and give a great result. Strange how some people make things so difficult...
Hi bro .. thanks for all the videos you have on this Chanel they are very useful and amazing explanation I would like to have an instructor like in my classroom of electrical .
Thanks for video? This is off topic but how do you like that tool bag? I've been thinking about switching from my klien backpack and shoulder bag to one of those?
@ElectricianU
5 жыл бұрын
I love the leather pouches. Leather lasts forever, nylon breaks in a year or two. Also the straps save my back bigtime!
We use the fancy Greenlee PVC heater bender. Once you use that you'll never use a heat gun again.
@648546lllooolll
3 жыл бұрын
My dad has had his for at least a quarter century. It’s a box that opens a 1’ 1/2 to 2’ long. Can handle up to a 3” pipe I believe.
@aussiegruber86
3 жыл бұрын
Link
@victormendoza6306
3 жыл бұрын
That’s awesome good job I will do it in my next outdoor for install an outlet for Xmas lights
@mcs-21277
3 жыл бұрын
"Hot box"
Thanks for showing us how it’s done.
@G.I.JeffsWorkbench
3 ай бұрын
If you really want to get fancy (precise), you could make a few simple jigs w/ 2x4s & dowel rods set to the angles you use most often (e.g. 30 & 45). You could use a speed square to get the angles dead on.
how about using the larger pipe to help with the bending?
Cloud you please do the ceiling fan installation?
If i do a pvc offset thats going to be seen i use my level's 30 degree vile. Thats the only way ive found to make a perfect offset. Do that on emt as well.
I enjoy your videos Dustin, Why not do a video with a hot box? I just bent a 4” offset the other day 😧
Thanks Bro,very cool
So I saw pre-made offset pieces at Home Depot. I didn't think they looked offset enough and after I got them home, sure enough they were totally worthless as they weren't offset enough to properly be against a wall and then offset to a junction box. Guess I will have to try bending them myself. Never done it before. Haven't ever hardly even use conduit before
Thank you !
Whats that instrumental you played in the beginning
try the EMT bender, but use a bending spring insert and see what happens. You can bend without (much) heat up to 1 inch or so. They have springs for sch 40 and sch 80 that prevent collapse and support the bend with a pipe bender. If it is cold out you will still need heat gun. The other thing I would probably do is build a hot box that your heat gun mounts into (and collapses?). This would allow much more even heating and faster with one hand. Use reflective barrier and a deflector inside (not the plastic stuff, the foil stuff). The K Factor is the difference in material between OD to OD on an any degree bend and the length of material used to make that configuration. . Example: 5 inch inside radius 90 degree bend with a 1 inch OD pipe has approximately 5.5 inches to the neutral axis of material (The place that sees neither compression nor tension in the bend). This means that the OD to OD of the 90 degree bend is 12 inches (5 (Inside radius)+1(OD of pipe)) X 2 (for measuring both directions from the bend to the tangent) = 12. However the total material needed is 1/4 (90 degree bend) Pi X 2 X (5.5 (Bend radius plus 1/2 OD OF PIPE) )= 8.6 inches. Therefore the K factor is 12 (OD to tangent measurement both ways) -8.6 (developed length of neutral axis)= 3.4 (K factor) inches. This makes it very easy to know how much PVC length to heat and where! If the OD of the two legs of your conduit need to be 24 and 48, then you will need 72-3.4=68.6 inches of material before bending. IF your first leg is 24 inches, then subtract the bend radius plus the pipe OD and mark that point (first tangent). Then measure 8.6 inches father and mark that point second tangent. Those are the two tangent points for this 90 degree bend, and the center point between them is the exact middle of the bend. My point is that one can figure out the K factor for just about any conduit and bend angle by its OD and the desired ID of the bend radius using this concept and find the developed length and material needed. This allows you to mark the tangent points before heating and bending and know where you bend and tangents belong as well as know of your material will be long enough for both desired leg lengths. Where this comes in really handy is wanting a 48 inch radius bend on 2 inch PVC conduit . You need it 5.5 feet long first leg, and have 20 ft length how long is the second leg after forming? The conduit is 2.2 inches OD, and your neutral axis will be 49.1. 1/4 Pi X2 X 49.1= 77.125 inches. K= (50.2 X2)-77.125= 23.275. Your first leg will be 48 and your second leg will be 120-66 (first bend)+23.275 (K Factor)=77.275 inches. Tangent marks at 18 inches and at (18+77)=95 inches for forming. Hot gloves and form around a wooden spool. These special bend conduit radii are EXPENSIVE and can be done cheaply with 20 ft lengths. Hope you had fun reading and I hope you understood it.
can you do the same thing to a 3 inch pvc conduit? I just need to bend it a little, like 25 - 30 degree angle.
@ElectricianU
5 жыл бұрын
You can but it will take awhile and be more difficult to do well. Definitely possible though
Good job
Question the code allows to do that?
Hi Dustin, Do you ever run PVC surface mount in garages? Or is it “junky” looking vs EMT Thanks for the great videos KJ
@ElectricianU
3 жыл бұрын
I personally don't use PVC unless it's underground. Here in TX it's so hot that the conduit flexes and warps a lot so over time it looks really bad on a wall. Plus, in general I think it just looks cheap. But underground it's all I use unless I have to use Rigid (RMC).
Hey Dude Do you work and charge by the hour
I use a green lee pvc heat box . It does 1/2- 2in pvc it's the only way to bend pipe. Also have 240v heater for 2in-6in
@justink7269
5 жыл бұрын
Its huge and takes a while to heat up. Old school. That's for big jobs w lots of big conduit
The company I worked for had a heat box for PVC and that worked great and was pretty fast it had rollers at the ends of the box so the PVC would rotate at ease.. I have also used a heat gun but takes alittle longer. One suggestion about getting the right angle that your looking is use a speed square..
@lawrencebyrne3448
2 жыл бұрын
Can you do the same with 32 mm conduit?
@n2jve1989
2 жыл бұрын
@@lawrencebyrne3448 with the hot box I used to do up to 2 1/2 inch PVC . I never done anymore then 1 1/2 PVC with a heat gun and that took some time. Hope that answers your question. Mike
Nice tool brother
Hello, im bending a 4” pvc pipe and i keep kinking my 90. Im literally cooking my pipe until its color is burnt and im still kinking it.. any advice for me? Keep in mind i am using a hot box
Where i get this spring? Have diffrent size spring diffrent size of pvc pipes?
Good evening sir, how do you like your pipe toasted? Well toasted, or light toasted?
I'm one of those that swears by the torch. It takes a while to get your distance and speed correct but once you get that figures out its substantially faster than a heat gun.
You're making my knees hurt! Lol
can you do a video how to use multi-meter please
Thanks sir
This is why I prefer to run schedule 20 PVC... dunno about code compliance but it’s way easier to bend with just a bit of heat!
Good information for those "make do.with what you have" moments.
I use gloves for sure, and either fill it up with sand or use a spring almost to fill the inside diameter , and bend it , doing this keep the pipe from making a sharp corner.
In Trinidad and Tobago we use spring benders we use plastic conduit for 90% of domestic application
big question i left my roll of wires outside for years i went to pick them up and the plastic cover came right off, Can i put each wire into conduit pipe or will burn the pipe please help
@eddiew2325
3 жыл бұрын
Umm did you try fish taping it
Malleable is actually able to be pounded into a thin sheet, but it is used informally as well.
A bit of rag to friction heat the conduit, bending spring and Bobs your Auntie. The PVC must be thicker in the US if it needs a heat gun.
Excellent, informative video! I've been wondering if I could custom bend PVC conduit. Not only did you answer my question, you showed me exactly how to do it. Thank you very much!!
When I bend water tubing for PC building I use a silicone insert to help hold form & shape, never tried using that for pvc, but wonder if would help & work with bending pipe? Usually though, end up using factory bends & rarely do I have to bend my own pvc bends. Another great vid/tutorial. Happy Holidays, A
@nictennick1650
5 жыл бұрын
You can use these special spring things with pvc that work on the same principal
@mrpanda2655
5 жыл бұрын
It's for the electrical rated pvc
Another method to prevent collapse is to insert a pull (extension spring) into the pvc pipe or a stainless kitchen/bath service line and then heat it up.
Hey could you make a video about how to wire a panel? (good esthetic)🤔 And thx for the tips.
@mar1video
5 жыл бұрын
Gabriel Tremblay - I'm assuming that will come soon. I guess before we can wire a panel we need to know how to layout, then how to run wires inside pipes, then connect outlets and switches, then wire the panel . I guess...
We use a hotbox and I'll stack items to the height of my offset. Once I heat my pipe I just set it on top of my little structure and let it fall to the ground. Get it nice and clean looking then cool it with a wet cloth. I hate the blowtorch. Too much room for error.
You can also use a wet rag instead of the cup of water, or keep a rag to dip in the water.
Hi, i am new to this industry what do think i need to do to become a good electrician o why not a master electrician. Thanks
@mrpanda2655
5 жыл бұрын
Here's a GREAT tip: if ur going to become a *legal* electrician don't learn off the internet and learn in school