Conduit Fill

[markebenson]

Setting up a 6a 3 phase sub panel. Running 4awg. I am seeing that I can run 4 pcs of 4awg thhn in 1 inch emt. Now to add the ground will adding 1 pc of 10 awg put be over the limit to where I have to go up to 1-1/4 or would I make it with the 1". thx

 

[infinity]

You would need to do the fill calculation to know for sure if it will fit.

 

[roger]

I agree with Rob, after you do it post your results and how you got to your conclusion.

Roger

 

[Adamjamma]

Let's wait until the OP posts his numbers.

 

[JFletcher]

Setting up a 6a 3 phase sub panel. Running 4awg. I am seeing that I can run 4 pcs of 4awg thhn in 1 inch emt. Now to add the ground will adding 1 pc of 10 awg put be over the limit to where I have to go up to 1-1/4 or would I make it with the 1". thx

Use the EMT as the ground.

 

[markebenson]

I agree with Rob, after you do it post your results and how you got to your conclusion.

Roger

4 pc thhn 4awg, 1pc thhn 10awg / 1" Emt

Total wire area (mm2): 226.25(0.35 in2)

Conduit area (mm2): 556.00 (0.86 in2)

Conduit fill (%): 40.69%

Thanks

 

[roger]

What is "pc"?

Roger

 

[sameguy]

Piece, peace brother.

 

[roger]

Piece, peace brother.

That would be p,pb.

Roger

 

[LarryFine]

What is "pc"?

Politically Correct
Printed Circuit
Personal Computer

 

[lordofthisworld]

4 pc thhn 4awg, 1pc thhn 10awg / 1" Emt

Total wire area (mm2):226.25(0.35 in2)

Conduit area (mm2): 556.00 (0.86 in2)

Conduit fill (%): 40.69%
Thanks

ch9 T5
total wire area #4AWG= .0824(in2) x 4=.3296 .3296 + .0211=.3507
total wire area #10AWG= .0211 x 1=.0211

CH 9 T4
over 2 wires 40% (in2) 1” = 0.346 to small
1 1/4” = .598 is the one u want

 

[markebenson]

What is "pc"?

Roger

stands for pieces sorry

 

[GoldDigger]

That would be p,pb.

Roger

What Would PB&J Do? :angel:

 

[Adamjamma]

4 pc thhn 4awg, 1pc thhn 10awg / 1" Emt

Total wire area (mm2):226.25(0.35 in2)

Conduit area (mm2): 556.00 (0.86 in2)

Conduit fill (%): 40.69%
Thanks

But over two wires only allowed forty percent fill... scuse me, live conductors...

but if you used the emt as your ground conductor think you could do it..just no 10 wire... that took you over the size.

 

[rambojoe]

4 pc thhn 4awg, 1pc thhn 10awg / 1" Emt

Total wire area (mm2):226.25(0.35 in2)

Conduit area (mm2): 556.00 (0.86 in2)

Conduit fill (%): 40.69%
Thanks

i'll just say you gave it a shot. good man.

 

[markebenson]

What Would PB&J Do? :angel:

Alot "Its Peanut Butter Jelly Time" !

 

[K8MHZ]

Any reason not to run 6 AWG?

 

[LarryFine]

Any reason not to run 6 AWG?

What?! And make this whole thread moot?! How dare you?!

 

[markebenson]

Any reason not to run 6 AWG?

Yes it is a 180 ft run.

 

[Adamjamma]

Let's wait until the OP posts his numbers.

Ok.., I was right, I think, just did it slightly different but still.. pulled the 40 percent fill for the emt from the one table, then calculated the wire sizes, then checked to see what the next size showed when wire was too big for his first size.

but, am I right that using EMT one can drop the grounding wire, the number ten in his case, and be fine? Mostly work with pvc so always need my grounds, but..