Feeders

[mrome4646]

My blueprints call for 4 sets of 4#500mcm in 4" conduit, how many physical wires are there?

 

[roger]

We will not do your home work for you, tell us what you think and how you arived at your conclusion, then we will help you.

Roger

 

[Alwayslearningelec]

Wow ...2 things come to my mind.

A question I can answer and a question more remedial than one I usually post.

 

[augie47]

Wow ...2 things come to my mind.

A question I can answer and a question more remedial than one I usually post.

 

[sameguy]

How many and what size ground wire?

 

[mrome4646]

We will not do your home work for you, tell us what you think and how you arived at your conclusion, then we will help you.

Roger

16 conductors

 

[Dennis Alwon]

16 conductors

That's correct. The follow up to that may be how many current carrying conductors given more info.

 

[ritelec]

That's correct. The follow up to that may be how many current carrying conductors given more info.

Aren't all 16 current carrying? :happyyes:


just got to add again Dennis.........so dig your avatar!

 

[ritelec]

Just to add mrome4646........ ??? is that for a 1600 amp? The next size higher breaker than the conductor is rated for will not apply and you may be required to run 600's.

 

[Dennis Alwon]

Aren't all 16 current carrying? :happyyes:


just got to add again Dennis.........so dig your avatar!

Not necessarily. The neutrals may not count on a 3 phase feeder.

 

[ritelec]

It may or may not be counted (derating or rather ampacity adjustment...)............but it's still a current carrying conductor.


Favorite Beatle? Gonna guess Lennon.

 

[infinity]

Just to add mrome4646........ ??? is that for a 1600 amp? The next size higher breaker than the conductor is rated for will not apply and you may be required to run 600's.

Where does it say 1600 amps?

 

[ritelec]

Over 800.................yes?

I will look.

 

[ritelec]

yeah 240.4 (B) and(C). (I'm "ass"uming the 4 sets off 500mcm are to feed 1600 amp gear..............if 1200 amp 500's are good)

 

[petersonra]

My blueprints call for 4 sets of 4#500mcm in 4" conduit, how many physical wires are there?

I don't think you can get 16 500MCMs in one 4" conduit.

 

[Dennis Alwon]

It may or may not be counted (derating or rather ampacity adjustment...)............but it's still a current carrying conductor.


Favorite Beatle? Gonna guess Lennon.

If that is the response the test is looking for then the test stinks. The neutral is not always a CCC according to the NEC-- I don't think that is the answer they are looking for but who knows.

 

[ritelec]

If that is the response the test is looking for then the test stinks. The neutral is not always a CCC according to the NEC-- I don't think that is the answer they are looking for but who knows.

It doesn't matter here or there I get your point, AND with "Much Respect"..........but does it say it's not a current carrying conductor? Or does it say, not counted as a current carrying conductor?


Was always partial to Paul.