EGC must be installed?

[FranklinMade]

Does it specify in the NEC that a EGC of the wire type must be installed with every circuit? I’m can’t seem to find this anywhere. Please help

 

[tom baker]

Yes and no see 250.118

 

[paulengr]

If you mean all metal surfaces must be bonded, yes.

Of course the EGC could be for instance a metal conduit or cable tray. It does not need to be a physical wire. If you think about a ground wire on an enclosure this is just an extension of the box. In this configuration a separate ground wire is a supplemental ground. It is not required by NEC but may be required by the hospital Code for instance that requires two separate grounds.

 

[FranklinMade]

If you mean all metal surfaces must be bonded, yes.

Of course the EGC could be for instance a metal conduit or cable tray. It does not need to be a physical wire. If you think about a ground wire on an enclosure this is just an extension of the box. In this configuration a separate ground wire is a supplemental ground. It is not required by NEC but may be required by the hospital Code for instance that requires two separate grounds.

Thank you sir!