Originally Posted By: Bob Badger
This post was automatically imported from our archived forum.
First if the conduit is electrically continuous it can be used as the EGC (equipment grounding conductor).
This info can be found in the NEC section 250.118 Types of Equipment Grounding Conductors.
As for the separation of neutrals and grounds.
Any panel or electrical equipment that does not contain the service disconnect but is located in, or on the same building or structure as the service disconnect must have the neutral and grounding conductors separate.
The only exception to that that an HI would need to consider is existing ranges and dryers.
Now if we have a panel in a separate building or structure (like a detached garage) it is the installers choice to separate or not separate the neutral and grounding conductors.
Grounding electrodes (rods water pipes etc.) are required for any and all panels located in or on a separate building or structure.
Bob (AKA iwire)
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