extra ground to subpanel

[jtom]

We turned down a job with a 200 amp disconnect with SER feeding the sub panel in house.They ran the ufer ground(grounding electrode)to the sub panel.We turned it down and made them run the ufer ground to the service disconnect.When we went back to reinspect,we noticed he did run another ufer ground to the service disconnect but left the original ufer ground in the sub panel.The neutrals and grounds are seperated in the sub panel.Is it a code violation to leave this extra ufer ground in the sub panel?Any code sections would be helpful.

 

[iwire]

Not a violation, the. NEC allows additional grounding electrodes to the EGC in any location.

250.54 Auxiliary Grounding Electrodes. One or more grounding electrodes shall be permitted to be connected to the equipment grounding conductors specified in 250.118 and shall not be required to comply with the electrode bonding requirements of 250.50 or 250.53(C) or the resis-tance requirements of 250.56, but the earth shall not be used as an effective ground-fault current path as specified in 250.4(A)(5) and 250.4(B)(4).

 

[eprice]

We turned down a job with a 200 amp disconnect with SER feeding the sub panel in house.They ran the ufer ground(grounding electrode)to the sub panel.We turned it down and made them run the ufer ground to the service disconnect.When we went back to reinspect,we noticed he did run another ufer ground to the service disconnect but left the original ufer ground in the sub panel.The neutrals and grounds are seperated in the sub panel.Is it a code violation to leave this extra ufer ground in the sub panel?Any code sections would be helpful.

Where does the grounding electrode conductor land in the sub panel? If it lands on the neutral bus, then it would be a violation of 250.24(A)(5). If it lands on the equipment grounding bus, then as Iwire has pointed out, it is permitted.

 

[iwire]

Where does the grounding electrode conductor land in the sub panel?

Good question, I was assuming the EGC.

 

[jtom]

It lands on the eq.grd. buss,so I say it is ok.Thanks for the help.

 

[mwm1752]

250.64( C )(2) could apply