Auxiliary Grounding Bars And Neutral Terminations

By
Home Inspector with NCW Home Inspections, LLC

Auxiliary Grounding Bars And Neutral Terminations

 

Wenatchee Home Inspections




One of the most common issues we see is double lugged neutrals on the grounding/neutral bus. Often this is a very easy correction but if the bus bar is crowded often adding an auxiliary grounding bar.



Link on why you cannot land more than one neutral on a terminal.
( Can I install more than one Neutral on a Panelboard terminal?)

                                    


Adding an auxiliary grounding bar is a simple and easy way to create more space. But when doing this you can only land grounding conductors on it.

What you cannot do is land neutrals on this auxiliary grounding bar. In doing this you are now using the enclosure to create continuity for the neutrals which are current carrying conductors, and this is a no-no.

            


2017 NEC-

200.2 General

 

Grounded conductors shall comply with 200.2(A) and (B).

 

(B) Continuity.

 

The continuity of a grounded conductor shall not depend on a connection to a metallic enclosure, raceway, or cable armor.

 

Informational Note: See 300.13(B) for the continuity of grounded conductors used in multiwire branch circuits.

 

From the 2014 NEC Handbook-

 

“This section requires grounded conductors be connected to a terminal or busbar that is specifically intended and identified for connection of grounded or neutral conductors. Because grounded conductors are current carrying, connecting them to a separate equipment grounding terminal or bar (that is directly connected to a metal or enclosure) results in the enclosure becoming a neutral conductor between the equipment grounding terminal and the point of connection for the grounded conductor.”

 


 

"This alternating current thing is just a fad. It is much too dangerous for general use."

Thomas Edison

 


 

 

If you find any errors or have additional information that would expand on any code, building standards or manufacturer requirements please let me know.

 

 

 


 

 

NCW Home Inspections, LLC  is a Licensed Washington State Home Inspection service located in Wenatchee Washington serving Chelan County, Douglas County, Kittitas County, Okanogan County and Grant County Washington and the cities of Wenatchee, Leavenworth, Cashmere, Oroville, Cle Elum, East Wenatchee, Quincy and many more…  

 

Your Wenatchee and Chelan Professional Real Estate, Home and Structural Pest Inspection Service

 

Instructor- Fundamentals of Home Inspection-  Bellingham Technical College

 

WA Home Inspector Advisory Licensing Board

 

www.ncwhomeinspections.com                                                   509-670-9572

You can follow me on Facebook, Twitter, Google+ and on my website Blog.

                      

 

close

This entry hasn't been re-blogged:

Re-Blogged By Re-Blogged At
Topic:
Home Buying
Location:
Washington Chelan County
Groups:
Active Rain Newbies
Ask the Home Inspector
Almost Anything Goes
Puget Sound - WA Real Estate
Methow Valley Realtors
Tags:
chelan real estate
wenatchee home inspeciton
electrical conductors
neutrals and grounding bars

Post a Comment
Spam prevention
Spam prevention
Show All Comments
Rainmaker
1,840,005
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

Boy, that box is a bus station!  Good explanation as usual.  Double good.

Oct 24, 2018 08:22 AM #1
Rainmaker
1,840,005
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

I speak with older electricians all the time and this was just the way they did it "back in the day...", their words.

It's like learning to ride a motorcycle from someone who knows all the wrong things to do.  And you think the way you learn is normal!

Oct 24, 2018 02:19 PM #2
Post a Comment
Spam prevention
Show All Comments

What's the reason you're reporting this blog entry?

Are you sure you want to report this blog entry as spam?

Rainmaker
488,648

Donald Hester

NCW Home Inspections, LLC
Home Inspection Services and Inspection Questions
*
*
*
*
Spam prevention

Additional Information