How to turn a 90 with conduit inside wall

[polar8]

I’m pulling #1 aluminum wire to my shop. Right now I have a 1.5”LB coming up from the ground and into face of a 2x6 the wall, like this: https://www.doityourself.com/forum/...d1342504394-nj-code-spa-shed-p_scw_262_09.jpg

Now, I need to run conduit straight up to my panel. How do I make that 90deg bend... another LB? That didn’t seem right to me.

Thanks for the suggestions

 

[zmaxmotorsports]

Where is the panel in relation to the conduit coming out of ground?

 

[highflier]

Usually you run conduit up the outside wall to the height of your panel.
Then run the service wire into the back of the panel.
If you can run it inside an unfinished wall, that is acceptable.

 

[wyliesdiesels]

If you use an LB in the wall, to turn into the panel, it will need to be accessable.

 

[polar8]

Where is the panel in relation to the conduit coming out of ground?

The panel is 5 stud bays over, and about 3’ higher.

Bringing the LB to directly behind the panel sound way more practical, but it would have been ugly since it’s in an exposed area... my wife vetoed that. So now I need to figure out how to run conduit inside the wall.



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[Fordman7795]

I used an LB on both sides.

 

[Stuff]

You have been screwed by the aesthetics committee.....

I assume that you won't be allowed to run exposed conduit on the inside either. One option is to build out the wall though it would need to be about a foot to accommodate a 90º 1 1/2" elbow. Other option I see is a large junction box with an accessible cover. Most are 4" deep so would stick out of wall a bit.

Next problem will be boring holes for your pipe. The holes might be too big for 2x4s. So convert to smaller copper NM or SE cable at the junction box.

 

[soob]

A pro tip: an LB inside the wall is accessible if you can cut a hole in the drywall to get to it.

May not work in all jurisdictions.

Seriously, if there's no splice inside the box, what possible reason could anyone have for caring whether it's there or not?

Maybe you could heat up and bend the pvc or something. I don't know.

 

[Norcal]

Dig a little farther to run the conduit closer & bring the LB into the back of the panel, much cleaner installation that way, anything else is going to look clunky.

 

[wyliesdiesels]

A pro tip: an LB inside the wall is accessible if you can cut a hole in the drywall to get to it.

May not work in all jurisdictions.

Seriously, if there's no splice inside the box, what possible reason could anyone have for caring whether it's there or not?

Maybe you could heat up and bend the pvc or something. I don't know.

Hole would have to be cut during install.

Not covered up and left for someone else to find down the road...

 

[zmaxmotorsports]

Dig a little farther to run the conduit closer & bring the LB into the back of the panel, much cleaner installation that way, anything else is going to look clunky.

 

[highflier]

Just run the service cable in the wall.
No need for conduit once inside a finished wall space.

 

[ford33]

Dig further and enter the building from the back of the panel. You can cover the conduit on the outside with wood trim or add a tall flowering plant near the wall.

 

[casmurbax]

I saw this at the veterinary office I bring the dogs to.

If you moved the conduit over to the same bay you could do something like this:





I know they were installing a whole building generator and I am not sure of the picture where the wall is open was the actual finish of the wiring before the wallboard installed. There was a 2 month lag between the 2 pictures.

 

[wyliesdiesels]

Just run the service cable in the wall.
No need for conduit once inside a finished wall space.

Wrong.

Individual conductors must be in conduit indoors.

 

[zmaxmotorsports]

Just run the service cable in the wall.
No need for conduit once inside a finished wall space.

 

[highflier]

Ahh, yes I spoke incorrectly, misread the feed

 

[signcrafter]

You can either put in a junction box with a front cover accessible, install short piece of PVC from LB to J box then go from Jbox to panel.

Second option is to use an LB in the wall and then use one of these plastic access doors. I've used them for plumbing before. Easy to install, just drywall and then cut a hole and silicone in place. Then can be painted or whatever to match the wall. https://www.homedepot.com/p/6-in-x-9-in-ABS-Wall-Access-Panel-34055/100149906

 

[pepi]

Dig a little farther to run the conduit closer & bring the LB into the back of the panel, much cleaner installation that way, anything else is going to look clunky.

X2, cleanest install in so many ways.

 

[Bert_]

The best way to do this would have been to bring the conduit up though the slab, inside the wall directly below the panel. Obviously it's a little late for that though.

If you put an LB or J-box inside the building, a J-box would be my choice of the two, it must remain accessible. No covering it up in the wall, no permanent cabinets in front of it, ect.

The best option here is bring it up the wall outside the building, then LB into the back of the panel. It doesn't matter what the wife or you think of how it looks, you don't have a lot of options. Besides if you paint the conduit the same color as the siding it won't be noticeable.

 

[rburke65]

If your wife vetoed the original idea, have her come up with a solution! She needs more to worry about. I know....I'm married also. Two years from now you....she....won't even know it's there. Easy for me to say....I'm in Ohio!

 

[Crazyjake8493]

Just run the service cable in the wall.
No need for conduit once inside a finished wall space.

If transitioning to service cable, that would work. Individual conductors is a no-go.

 

[PWC Repair]

Im also thinking back up a bit, a couple 45s or whatever you need to do, and come in right under the panel.

 

[Bert_]

If transitioning to service cable, that would work. Individual conductors is a no-go.

URD or MHF is still considered a cable since it is made of multiple wires twisted together, but you are absolutely right those types cannot be run though a wall without a conduit.

At this point my vote would be to run conduit up the wall outside into the back of the panel. Paint the conduit wall color and you will forget it's even there.

 

[arkieguide]

The panel is 5 stud bays over, and about 3’ higher.

Bringing the LB to directly behind the panel sound way more practical, but it would have been ugly since it’s in an exposed area... my wife vetoed that. So now I need to figure out how to run conduit inside the wall.



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In my experience - move the pipe on the outside to come straight up to back of panel. Inside yes an LB will work fine in accessible.

 

[rharman]

Put in an LB with an access door. A prefabbed door won't look bad.

 

[bobbyjean]

dig trench,cut plate,core,chip out concrete and come up inside wall...or take wife to dinner and just come up in the exposed area...bam-done

 

[Norcal]

Another option is to move the panel to the bay where the LB is now & use a 4" deep screw cover can in the wall cavity rather then using a LB in the wall which never should be done under ANY circumstance.

 

[DirtyJersey]

X3

Trench over to panel

Or

Heat up a stick pvc and bend it to fit



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[TheEquineFencer]

Just run the service cable in the wall.
No need for conduit once inside a finished wall space.

As I'm read through these threads...that's what I was thinking....

 

[TheEquineFencer]

Wrong.

Individual conductors must be in conduit indoors.

Oops, did notice they were separate...

 

[polar8]

Can I run my XHHW wires inside flexible conduit in the wall? Like smurf tube. Or does it have to be in rigid conduit.

 

[Bert_]

Can I run my XHHW wires inside flexible conduit in the wall? Like smurf tube. Or does it have to be in rigid conduit.

Sure you can, but any flexible conduit will have a minimum bend radius. It's usually about the same as the pvc 90's you've been using so it won't help you.

FYI, normally "rigid" conduit means the thick metal kind that is threaded.

 

[polar8]

Sure you can, but any flexible conduit will have a minimum bend radius. It's usually about the same as the pvc 90's you've been using so it won't help you.

FYI, normally "rigid" conduit means the thick metal kind that is threaded.

I see. What I meant was, I've already come to terms with needing an accessible LB inside the wall. I was just thinking about what to use from that LB to the panel. Using PVC conduit would mean I would have to chop the straight runs up into multiple sections, to feed it through the studs. So I'd rather use flexible tube if possible.

 

[wyliesdiesels]

FMC/greenfield would be more appropriate for that but as bert brought up above, bend radius may become an issue...