Ground wire requirement.

[ALLELECTRIC95]

Where in the code does it specify that we must have a ground wire between the disconnect and the panel and what determines this? Thank you!!!

 

[hillbilly]

Where in the code does it specify that we must have a ground wire between the disconnect and the panel and what determines this? Thank you!!!

NEC Article 250?

Can you be a little more specific.

steve

 

[ALLELECTRIC95]

I orginally asked.... Where does it address the requirement for a ground wire between the service disconnect (located on building) and the panel (located inside building) in the NEC?

And I was instructed to see 250.122.

Now I am being asked where it spells out what determines this requirement and why.

Hope that helps.

 

[charlie]

. . . Now I am being asked where it spells out what determines this requirement and why. . .

250.122 just spells out how to size the grounding conductor. You need to study all of Part VI in Article 250 (250.110 through 250.126). You know, I would also recommend that you purchase a copy of the 2008 Edition of the NFPA NEC Handbook.

 

[billsnuff]

250

250

http://forums.mikeholt.com/showthread.php?t=95495

George gives good info, see above link

 

[charlie]

http://forums.mikeholt.com/showthread.php?t=95495

George gives good info, see above link

Great post (I wish I had thought of that)!

 

[benaround]

I orginally asked.... Where does it address the requirement for a ground wire between the service disconnect (located on building) and the panel (located inside building) in the NEC?

And I was instructed to see 250.122.

Now I am being asked where it spells out what determines this requirement and why.

Hope that helps.

Try 215.6 and 250.134(A)

 

[jamesoftn]

I believe the 2008 NEC Art. 250.142 will answer the question for supply side and load side equipment.