[RE-wrenches] GEC and EGC Advice

[bob ellison]

I would run a wire, I have seen metallic conduit used as ground come apart
in buildings. At that point we know where the ground (or at least the
connection goes..)

I doubt that it makes a difference whether it is single or 3 phase.

But there are lots of people on the list with more 3 phase experience than I
have. 

 

Later,

Bob Ellison

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allen
Frishman
Sent: Tuesday, December 06, 2011 3:30 AM
To: RE-wrenches
Subject: [RE-wrenches] GEC and EGC Advice

 

Fellow Wrenchers,

I know this topic has come up before and I have a understanding but I am
looking for best practices advice.

 

When installing a 50KW or larger 3 phase 208V (WYE Service) Inverter on a
roof do you run your Grounding Electrode Conductor in a separate conduit
from the 3 hots, and the Equipment Grounding Conductor or do you run it all
in the same conduit together.

 

My thought is to run it all in the same conduit and utilize the metalic
conduit as the Equipment Ground instead of running a actual conductor for
the EGC.

 

All feedback is appreciated.

Al Frishman
AeonSolar

(917) 699-6641 <tel:%28917%29%20699-6641>  - cell
(888) 460-2867 <tel:%28888%29%20460-2867> 
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

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