maximum amount of #12 wires to fit into 3/4" pvc pipe?

[alfaranger]

Doing some calculations and my mind drew a blank on this one for some reason.Couldnt find the exact answer in the nec.Could anyone help me out?

 

[mdshunk]

Insulation type?

sch 80 or sch 40?

 

[SiddMartin]

my 2 cents: fill & fill w/ derating are different

 

[alfaranger]

#12 to 3/4" pvc

#12 to 3/4" pvc

thhn,schedule 40

 

[Buck Parrish]

13 thhn...............

 

[celtic]

Table C-10 shows 15

 

[William1978]

Table C-10 shows 15

I would hate to have to pull 15 # 12 in an 3/4 conduit.

 

[celtic]

I would hate to have to pull 15 # 12 in an 3/4 conduit.

Neither would I...but that wasn't the question.

 

[iwire]

I would hate to have to pull 15 # 12 in an 3/4 conduit.

I agree and once you apply derating they will not support a 20 amp breaker any longer.

 

[celtic]

I agree and once you apply derating they will not support a 20 amp breaker any longer.

I didn't see where a 20A CB was a concern.

 

[Pierre C Belarge]

NYC test question on the test provided earlier today.


What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

 

[iwire]

I didn't see where a 20A CB was a concern.

Your right, the wires will probably not be connected to anything at all. :wink:

I figured the basic question had been answered and I would elaborate.

 

[Buck Parrish]

NYC test question on the test provided earlier today.


What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

Is their a -
None of the above- answer.

 

[celtic]

Your right, the wires will probably not be connected to anything at all. :wink:

I figured the basic question had been answered and I would elaborate.

You're right....how long is the OP's conduit again?

 

[infinity]

NYC test question on the test provided earlier today.


What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

It would be tough to word that question more poorly.

 

[celtic]

NYC test question on the test provided earlier today.


What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

2450'

How'd i do?

 

[celtic]

It would be tough to word that question more poorly.

Maybe break it down by color....

What is the total length of Green 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

 

[Pierre C Belarge]

Take the length of the pipe, and multiple the number of conductors permitted in the size EMT.



I think they asked this question in such a fashion as to make it harder for non-english speaking people to properly answer it.

 

[chris kennedy]

What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

19,530'. What do I win?

 

[iwire]

NYC test question on the test provided earlier today.


What is the total length of 10 AWG, Type THHN conductors that can be installed in a 70 foot length of EMT?

Seems straight foward to me, 700' without looking in the book.

10 x 70' = 700'