Sub Panel Diagrams

Closed Thread

  #1  
Old 05-16-13, 02:31 PM
ray2047's Avatar
Group Moderator
Thread Starter
Join Date: Mar 2006
Location: USA
Posts: 32,659
Sub Panel Diagrams

The term sub panel does not appear in the NEC but for convenience we use it to refer to any panel other than the panel containing the first OCPD (Over Current Protection Device). Below are three of the most common for subpanels not in the same structure and one for a subpanel in the same structure. The first four diagrams are based on 2008 NEC code. The fifth diagram is based on NEC code before the 2008 cycle assuming no other metallic pathways. It is usually grandfathered unless major changes are made. What is a major change is determined by the Authority Having Jurisdiction (AHJ).

Name:  sp1.jpg
Views: 444
Size:  71.4 KB

Name:  sp2.jpg
Views: 459
Size:  42.3 KB

Name:  sp2b.jpg
Views: 0
Size:  47.1 KB

Name:  sp7.jpg
Views: 344
Size:  40.8 KB
120 volt 30 amp RV panel using 240 volt Main Lug panel.

Name:  sp3.jpg
Views: 445
Size:  30.5 KB

TRANSFER SWITCH With subpanel connected to first OCPD and inlet.

Name:  sp6.jpg
Views: 345
Size:  35.5 KB

Name:  sp5.jpg
Views: 779
Size:  51.9 KB
 

Last edited by ray2047; Today at 06:21 AM.
Sponsored Links
  #2  
Old 05-31-13, 12:45 PM
Forum Topic Moderator
Join Date: Sep 2005
Location: USA
Posts: 4,059
Very helpful drawings Ray! They have been and will be quite useful.
 
  #3  
Old 11-26-13, 03:54 PM
Member
Join Date: Nov 2013
Location: usa
Posts: 10
main panel to sub panel same structure

Hi
I was wandering why the diagram on main panel & sub panel on same structure
has no ground rod & marked no ground rod? it is the 4th diagram down....
 
  #4  
Old 11-26-13, 04:38 PM
ray2047's Avatar
Group Moderator
Thread Starter
Join Date: Mar 2006
Location: USA
Posts: 32,659
Code (NEC) does not require ground rods for subpanels in the same structure.
 
  #5  
Old 11-27-13, 04:49 PM
Member
Join Date: Nov 2013
Location: usa
Posts: 10
sub panels

Hi
I see what you mean! the ground is on main panel! that make sense.

Thanks again for the great info.....
 
Closed Thread

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


Thread Tools
Search this Thread
Display Modes
'