[RE-wrenches] Concentrics at 250 volts plus

[Kelly Larson]

Hi William,

The requirement for bonding on BOTH ends comes when the wire though the conduit is a GEC.  For EGC, just one end of the conduit is sufficient.

Blessings,
Kelly


~~~~~
Kelly Larson
707-223-3209

Box 504
Ukiah, CA 95482
Electrical Engineer
NABCEP Certified Solar PV Installation Professional
IREC Certified Master Trainer for Photovoltaic Installer
CA Electrical Contractor# 868189
SolarKelly.com

On Jul 14, 2014, at 3:11 PM, William Miller wrote:

> Friends:
> 
> Please help us settle a crew debate before we come to blows:  for circuits 250 volts and higher, do we need to bond EMT at both ends?  Or, if there is bonded cabinet with a concentric on one end and a solid, bonded metal cabinet on the other, do we need a bonding bushing on the concentric end?
> 
> I say a conduit needs to be bonded only on one end. My misguided employee says both ends. Both cabinets are independently bonded.
> 
> Thanks in advance. 
> 
> William
> Miller Solar
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