neutrals on a added ground bar

[smoke stack lightning]

Apon running out of space on the factory installed ground bars on a residental 1 ph. 240v 200A pannel, I was asked to tap screw-in a new ground bar and put new neutral conductors on the new gn. bar. I thought a field installed gn. bar could only be used for eqg conductors, whos right?

 

[Twoskinsoneman]

Apon running out of space on the factory installed ground bars on a residental 1 ph. 240v 200A pannel, I was asked to tap screw-in a new ground bar and put new neutral conductors on the new gn. bar. I thought a field installed gn. bar could only be used for eqg conductors, whos right?

Well I know EGC can't be landed on the neutral bar but i think the neutrals can land on the EGC bar... but I think your problem is you can't use the cabinet as a path for the neutral...I bet you might be ok of you ran a properly sized wire from the new bar to the neutral bar....

200.2(B) was what I was thinking about

 

[220/221]

If it is not the service panel, install an isolated neutral bar with the biggest jumper that will fit in the lugs (6 or 4?)

It will be a modification but it will be safe.

 

[viclibo]

Is the panel in question the service? If so the neutrals and grounds are bonded together. Why couldn't you add bus bars as needed ?

 

[tom baker]

See 200.2(B), new for the 08 NEC

 

[LarryFine]

Smoke, I'd place all of the grounded conductors on the existing neutral bar and move all of the EGC's to the new bar.