Sub Panel - Neutral & Ground Bars - Electrical - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree4Likes
  • 2 Post By jbfan
  • 2 Post By joed
Reply
 
Thread Tools
Display Modes
Old 09-19-2018, 06:14 AM   #1
Newbie
 
Join Date: Sep 2018
Posts: 2
Default

Sub panel - Neutral & Ground Bars


I am adding additional circuits for a renovation. My main panel is full, however, my sub panel has enough open breaker slots. When opening my sub panel to add these breakers, I noticed a couple of things:

1. The neutral terminals (on left side of breakers) would have enough extra terminal screws to add new neutral lines, however the neutral lug from the main panel is directly in the middle of one of the bars. This eliminates 6 neutral bar screws from being useful. Additionally, all but one of the other neutral terminal screws are already consumed with a neutral wire. I realize I cannot double up neutral wires in the same terminal screw. Even if I move the neutral lug that’s mounted in the middle of the bar, that will only open up about 3 neutral bar screws to use. Which still is not enough to match the available breaker slots.

2. The neutral bar and ground bars (on the right side) are bonded via the connection bar at the top of the panel. This does not seem to be correct since it’s a sub panel. Everything that I read and understand point to the need of having these completely separated within a sub panel for good reasons.

With the two points above, I was thinking of adding a new/separate ground bar directly to the box. I could then disconnect the ground from the main panel and the individual sub panel breaker grounds and reconnect them to the new/separate ground bar. This would then fix both points above..1. Open up new/additional neutral screws (that were previously used for grounds). 2. Eliminate the bonded neutral and ground terminals.

Can a professional confirm this approach is safe, compliant, and viable? Or provide another approach.

Picture of current sub panel is attached.
Attached Thumbnails
Sub panel - Neutral & Ground Bars-e33a0604-cacd-42df-b448-75748b912808_1537355528651.jpg  
Cshak is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-19-2018, 06:48 AM   #2
Electrical Contractor
 
jbfan's Avatar
 
Join Date: Jun 2004
Location: Newnan GA
Posts: 8,436
Rewards Points: 6,442
Default

Re: Sub panel - Neutral & Ground Bars


Add a ground bar, remove the green screw, move all grounds to the to the ground bar and you will be good.
jhil and CodeMatters like this.
__________________
Yes I am a pirate, two hundred years too late
The cannons don't thunder, there's nothing to plunder
I'm an over-forty victim of fate.
jbfan is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-19-2018, 06:49 AM   #3
Newbie
 
Join Date: Sep 2018
Posts: 2
Default


Perfect. Thanks!
Cshak is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-19-2018, 07:16 AM   #4
Super Moderator
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 19,809
Rewards Points: 30,934
Blog Entries: 11
Default

Re: Sub panel - Neutral & Ground Bars


For convenience you could add two ground bars, one on each side.
jbfan and CodeMatters like this.
joed is online now   Reply With Quote
Old 09-19-2018, 07:02 PM   #5
Licensed electrician
 
Join Date: Sep 2007
Location: Maryland
Posts: 12,637
Rewards Points: 3,740
Default


You need to add a ground bar over the raised bumps on the back of the panel. Both of the existing bars are for neutrals.

It.looks.like the green bond screw is installed. It should be removed it the feeder is 4 wires.
__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
120v to neutral, 240v to ground, sub panel dothings Electrical 11 05-30-2017 08:35 PM
[Canadian] Code re bonding neutral and ground in panel Proton Electrical 68 02-10-2014 10:55 AM
Main Breaker Panels - Neutral vs. Earth Ground TomM141 Electrical 3 02-03-2013 05:17 PM
Square D Homelite Main Panel - Ground / Neutral Bonding erm1981 Electrical 25 07-17-2012 10:25 PM
breaker panel question chadvavra Electrical 11 08-10-2007 09:20 AM




Top of Page | View New Posts