Pulling 3 2/0 and one # 6 through 2 inch

[patricknola]

Hey Guys, I've got job where I'm upgrading a t mobile cell tower to from 125 amps to 200 amps. There is existing 2 inch rigid pipe that has 4 lbs I'll have to pull through. I'm pulling in (3) 2/0 copper and a #6 ground. The thing is there are (4) 2 inch lb condulets I've got to pull through, it's a 130 foot pull. So I could take out 80 feet of conduit with the 4 condulets and upsize to 2 1/2 or 3 inch, but I don't want to fight getting this wire through these condulets. Does anyone have suggestions before I get my guys out there. If I don't replace the 2 inch this could be a two day job. Thanks in advance.

 

[Eddie702]

Are you on the line side of the meter? If it's a service you could pull a bare neutral.....gives you a little more room

 

[infinity]

It's possible that you cannot pull those conductors in a standard 2" LB.

 

[Seven-Delta-FortyOne]

Curiosity.

How you getting away with 2/0 for 200A Feed?

 

[infinity]

Curiosity.

How you getting away with 2/0 for 200A Feed?

Good question.

 

[patricknola]

Curiosity.

How you getting away with 2/0 for 200A Feed?

I hoping to get away with 2/0 wire, I'm here feeding my conscience.

 

[patricknola]

Curiosity.

How you getting away with 2/0 for 200A Feed?

I was hoping to slide by with that one, If I go to 3/0 I definitely need to install bigger conduit and it's going to be a bit@#.

 

[patricknola]

It's possible that you cannot pull those conductors in a standard 2" LB.

Is there a bigger 2 inch lb?

 

[infinity]

With #2/0 you're stuck with a maximum OCPD of 175 amps.

 

[hillbilly1]

Is there a bigger 2 inch lb?

Yes, they are called “Mogul”, or you can use a 2 1/2” LB with reducing bushings

 

[Seven-Delta-FortyOne]

You need to go with a #4 for the ground as well.

3-3/0 + 1-#4 is OK for 2" RMC.

However, I personally would not want to pull that through 4 LB's.

Maybe swap for sweeps?

 

[hillbilly1]

If it is a complete rigid system, you could eliminate the ground.

 

[infinity]

The LB would need to be 6X the trade size of the raceway for an angle pull, that means that the opening would need to be a minimum of 12".

 

[texie]

Are these service conductors? 120/240 single phase? What is the #6 conductor?

 

[electrofelon]

(3) 3/0 plus ground is big deal at all in 2". Its the Lb's that will not be super fun (but really not the worst thing in the world, its done all the time). Probably not code compliant though, IIRC usually I see 3 2/0 or 3 3/0 listed on 2" LB''s. I would likely replace the LB's with 2 1/2's or 3's.

 

[patricknola]

Are these service conductors? 120/240 single phase? What is the #6 conductor?

We're replacing the existing conductors from meter stack to panel. There was an existing ground so I was to replace it.

 

[SSDriver]

Up sizing the LB's or going with Mogul LBs(expensive) would help out. Mogul LB's are really nice to pull through.

 

[SSDriver]

We're replacing the existing conductors from meter stack to panel. There was an existing ground so I was to replace it.

Well if its running the entire load of the dwelling than 2/0 would be fine.

 

[electrofelon]

Another option, if the LB's are rated for the 2/0's+G is to stick with 2/0 and use the 90 degree ampacity of the conductors. You would need to splice back to 3/0 however at each end before terminating on the equipment (probably in a separate enclosure).

 

[Seven-Delta-FortyOne]

Well if its running the entire load of the dwelling than 2/0 would be fine.

Not a dwelling.

He said it’s a cell tower for T-Mobile, hence the 83% rule won’t apply.