Posted By: VBSELECTRIC1
Redundant ground - 10/04/09 07:58 PM
Can some one explain what is Redundant grounding
Posted By: gfretwell
Re: Redundant ground - 10/04/09 08:46 PM
The term is used in article 517 (patient care areas) it generally refers to an additional grounding conductor.
They require a properly made up metallic wiring method (your ground) plus an insulated grounding wire (the redundant ground).
Keep in mind the first EGC can be your conduit, then a properly sized insulated EGC inside.