EMT LB Body Through Wall To Panel

[atvkid4eva]

I am running some 1” EMT for a welding circuit. I am to the point where I need to pass through 7/16” plywood and then go up and into the bottom of my sub panel. I’m thinking that a LB body is best for this to pass through the wall and it will give me a spot to pull the wires. What would you guys recommend I do behind the wall? Flexible conduit of some sort? I would prefer to not remove the plywood if possible. Let me know what you guys would do to make this as clean as possible. Pics below for reference, I have not drilled the pass through hole yet. Thanks!

 

[jeepxj]

if it was me:

I'd use a 4x4 surface mount box. that would let me get a bigger access hole into the plywood that would be hidden by the box.

I'd cut the vertical section of surface mount lower a bit to keep it out of my sight line. bring the conduit into the side of the 4x4 then use a blank plate when all done.

from the back of the 4x4 surface mount box i'd use flex. either smurf or liquid tight.

i'd drag a bonding ground in the smurf tube/LT to the box/conduit just to be on the safe side.

a photo journey:










or

 

[mike93lx]

Any other expected electrical down the road? Giving yourself an access panel now might be worth it, if so

 

[pattenp]

You can use the box as jeepxj suggested but fish a piece of romex from box to panel.

 

[LXCam]

Flex won't work as the radius is too tight. I use telephone 90's like this.

 

[jeepxj]

Flex won't work as the radius is too tight. I use telephone 90's like this.

depends on wall thickness. i took that wall covering to be a pole barn so at least 6x6 if not 8x8 depth plus 2x girts.

 

[mike93lx]

You can use the box as jeepxj suggested but fish a piece of romex from box to panel.

I like this a lot. Simple, no need for buying a bunch of extra conduit or figuring out fittings. Two NM clamps, 4' of romex by the foot, a box and a cover.

 

[LXCam]

So you add a coupling and a ****** to the male side and to the LB.


Then you cuss like a muthaFr getting that last #8 in and around the radius.

 

[jeepxj]

I like this a lot. Simple, no need for buying a bunch of extra conduit or figuring out fittings. Two NM clamps, 4' of romex by the foot, a box and a cover.

also you can snap the romex connector into the panel from the inside. much easier on the fingers.

 

[mike93lx]

also you can snap the romex connector into the panel from the inside. much easier on the fingers.

I just install the clamp on the wire, feed it up to the panel and use my manly fingers to install the nut from inside the panel.

 

[Max]

I just install the clamp on the wire, feed it up to the panel and use my manly fingers to install the nut from inside the panel.

That is a clever approach. I am sure I’ll use that down the road - thank you.

 

[mike93lx]

That is a clever approach. I am sure I’ll use that down the road - thank you.

No credit to me...I'm sure I learned it from one of the folks here

 

[wyliesdiesels]

NM-b through the wall to a j box would be a lot easier than trying to run THWN inside the wall in conduit

 

[Zeke]

I thought this thread looked familiar. It was on Mike Holt and they shut it down.

 

[Norcal]

I thought this thread looked familiar. It was on Mike Holt and they shut it down.

DIY posts are prohibited at MH, so they will be locked quickly.

 

[nadogail]

I would seriously consider threading a ridged ****** into the LB.

 

[sparky 1971]

I'm famous for dropping out of the bottom of the panel with romex to a single gang box, then putting a Raco 187 over the single gang and running EMT from there. The size of the single gang hole makes it a lot easier to get a hand in there and grab the cable.

4 in. Square Electrical Box Extender, 1-1/2 in. Deep, with Multiple KO's for Switch Boxes | 187 | Raco

4 in. Square Electrical Box Extender, 1-1/2 in. Deep with Multiple Kos

www.hubbell.com

 

[mike93lx]

I'm famous for dropping out of the bottom of the panel with romex to a single gang box, then putting a Raco 187 over the single gang and running EMT from there. The size of the single gang hole makes it a lot easier to get a hand in there and grab the cable.

4 in. Square Electrical Box Extender, 1-1/2 in. Deep, with Multiple KO's for Switch Boxes | 187 | Raco

4 in. Square Electrical Box Extender, 1-1/2 in. Deep with Multiple Kos

www.hubbell.com

The tales of your accomplishments are known the world over

 

[sparky 1971]

The tales of your accomplishments are known the world over

You aren't lying.

 

[cmandp]

Reading to write into the eletrical install tricks memory bank for future use. I plan on running EMT in the garage once we get a new feed and subpanel installed.

 

[Norcal]

I'm famous for dropping out of the bottom of the panel with romex to a single gang box, then putting a Raco 187 over the single gang and running EMT from there. The size of the single gang hole makes it a lot easier to get a hand in there and grab the cable.

4 in. Square Electrical Box Extender, 1-1/2 in. Deep, with Multiple KO's for Switch Boxes | 187 | Raco

4 in. Square Electrical Box Extender, 1-1/2 in. Deep with Multiple Kos

www.hubbell.com

It's a method I have used myself, works great.

Another twist, used a Bell WP extension over a spare conduit & box to run conduit for a welder, little nicer looking then the four square extension.

 

[Jim greengo]

if it was me:

I'd use a 4x4 surface mount box. that would let me get a bigger access hole into the plywood that would be hidden by the box.

I'd cut the vertical section of surface mount lower a bit to keep it out of my sight line. bring the conduit into the side of the 4x4 then use a blank plate when all done.

from the back of the 4x4 surface mount box i'd use flex. either smurf or liquid tight.

i'd drag a bonding ground in the smurf tube/LT to the box/conduit just to be on the safe side.

a photo journey:










or

I'd probably do a 4 11/16" box,easier to get that 1" pipe into it,and still have room for wires.