Gec with other conductors

[chris kennedy]

I thought I saw a thread or post that talked about running a GEC in conduit with other conductors. I reread Part III and did a search.

Was I dreaming?

I didn't pay much attention when(if) I read it because I never thought I'd need to. Now I have an install where it would be an option.

Just had a thought check 230.

If anyone can help that would be great!

 

[raider1]

You are permitted to run a GEC through a raceway with other conductors. Keep in mind 250.64(E) though if you are going to be using a ferrous metal raceway.

Chris

 

[chris kennedy]

You are permitted to run a GEC through a raceway with other conductors. Keep in mind 250.64(E) though if you are going to be using a ferrous metal raceway.

Chris

Thanks Chris its RNC. You don't have to look it up but off the top of your head is it in 250 or 230?

 

[raider1]

250.64 gives you the requirements for the installation of the GEC.

The NEC doesn't prohibit the installation of a GEC within a raceway with other conductors, so therefore if it isn't prohibited then it is allowed.

Chris

 

[chris kennedy]

The NEC doesn't prohibit the installation of a GEC within a raceway with other conductors, so therefore if it isn't prohibited then it is allowed.

Chris

Thanks again,
It's hard to find something thats not there.

 

[raider1]

Thanks again,
It's hard to find something thats not there.

Agreed.

Chris

 

[chris kennedy]

More info

More info

I think I should give a more details.

I installed an 800A ATS outside an existing bldg. I have 3 sets of four 300's and a 1/0 egc going back to the existing 1600 A MDP. This is where I need to demo the bonding jumper and hit the existing grounding electrode system with my new 3/0.

So 2 couduits will have four 300's and a 1/0.

The 3rd conduit will have four 300's a 1/0 and the 3/0 GEC.

So now I'm looking through 300 here. I don't see any violations but I'm still not comfortable with this.

 

[don_resqcapt19]

Chris,

So 2 couduits will have four 300's and a 1/0.
The 3rd conduit will have four 300's a 1/0 and the 3/0 GEC.

Now you have a violation of 310.4.
Don

 

[tom baker]

I would suggest you take the GEC and exit the enclosure and run it in its own raceway.

 

[chris kennedy]

Chris,

Now you have a violation of 310.4.
Don

OK I just read 310.4 again. Wheres the violation? I don't have the same physical characteristics?

 

[don_resqcapt19]

310.4 ... Where conductors are in separate raceways or cables, the same number of conductors shall be used in each raceway or cable. ...

 

[chris kennedy]

310.4 ... Where conductors are in separate raceways or cables, the same number of conductors shall be used in each raceway or cable. ...

Yes. Damn! Time for plan "B".

 

[wirenut3]

A ground is not considered a conductor. Unless I'm mistaken.

 

[chris kennedy]

A ground is not considered a conductor. Unless I'm mistaken.

Grounding Electrode Conductor.

But thanks. I can't say I didn't look at the current carring conductor angle.

 

[Pierre C Belarge]

A GEC is a conductor, it is not a "circuit" conductor.