Office Bldg./House panel question

[jerryb52]

I recently had a job dropped in my lap to finish.
Here is what I have, a 1/0 grounding conductor to my house meter bonding the neutral. The neutral is 350 MCM to the house panel and is bonded to the can.
Do I need a 1/0 grounding conductor from the meter to the panel? Or from the panel to the grounding system?
There is no grounding conductor from the system gound to this panel.
Will the bonding of the neutral to the panel be enough? My project manager said that the neutral bonding was enough.
(Like I said I didn't run any of this, just need to finish it.)

Thanks...

[ January 06, 2005, 09:25 PM: Message edited by: jerryb52 ]

 

[George Stolz]

Re: Office Bldg./House panel question

Will the bonding of the neutral to the panel be enough? My project manager said that the neutral bonding was enough.

Are you saying you'd use the neutral as a ground? NEC 2005-250.24(A)(5).

I'd say yes, you need to run a grounding conductor based on 250.122.

 

[russ]

Re: Office Bldg./House panel question

Are you using a main before the "house panel", or is the main in the "house panel".

If you are strictly going from the poco meter to the main disconnect, or the panel with the main disconnect in it, you seem to be OK.

[ January 06, 2005, 10:06 PM: Message edited by: russ ]

 

[russ]

Re: Office Bldg./House panel question

Does the power company, and the local inspector allow the bonding of the grounding conductor and the grounded conductor to happen in the meter, and not at the main disconnect.

 

[jerryb52]

Re: Office Bldg./House panel question

Originally posted by russ:
Are you using a main before the "house panel", or is the main in the "house panel".

If you are strictly going from the poco meter to the main disconnect, or the panel with the main disconnect in it, you seem to be OK.

The main is in the House Panel and is coming right from the meter, about 6 ft. away.

 

[jerryb52]

Re: Office Bldg./House panel question

Originally posted by russ:
Does the power company, and the local inspector allow the bonding of the grounding conductor and the grounded conductor to happen in the meter, and not at the main disconnect.

Yes, here (in this county anyway) we always bond the neutral and grounding electrodes in the meter can.
This is what Florida Power & Light, and the inspectors want.
So, my project manager was right. For some reason, it didn't look right to me not having a grounding conductor ran back to the grounding system...
I think I still have jet-lag from the holidays...
Thank you for the second opinion.

[ January 07, 2005, 04:24 AM: Message edited by: jerryb52 ]