Ground Rod

Reply

  #1  
Old 05-30-14, 11:55 AM
Member
Thread Starter
Join Date: Oct 2010
Location: USA
Posts: 44
Ground Rod

My main panel is grounded at the adjacent cold water pipe.
I understand this is no longer Code compliant but grandfathered in.
IF, I wanted to install a new ground rod...
What are the current requirements?
Copper rod?
How long?
How far away from the house?
How much exposed above the ground?
Guage of wire used to connect to panel?
Insulated or bare?
Many thanks!
 
Sponsored Links
  #2  
Old 05-30-14, 12:52 PM
pcboss's Avatar
Forum Topic Moderator
Join Date: Jul 2002
Location: Maryland
Posts: 14,361
The conductor to a ground rod never needs to be larger than #6. It can be bare or insulated.

The rod can be copper clad or galvanized and will be 8' long. It will be flush or below ground.

The distance away from the house needs to be far enough out to clear the footer.
 
  #3  
Old 05-30-14, 03:27 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: Twin Cities, MN
Posts: 11,984
The water service is your main grounding electrode. This should be bonded to the panel at the point of entry to the building. A ground rod is a supplemental grounding electrode. This is why the grounding electrode conductor to the ground rod never needs to be larger than #6 copper while the one to the water service conductor is required to get larger as the service size gets larger. (#6 for 100 amp #4 for 200 amp)
 
  #4  
Old 05-30-14, 03:30 PM
Member
Thread Starter
Join Date: Oct 2010
Location: USA
Posts: 44
Thanks!

Many thanks for your responses.
 
  #5  
Old 05-30-14, 04:02 PM
bigboypete's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2013
Posts: 218
This is why the grounding electrode conductor to the ground rod never needs to be larger than #6 copper while the one to the water service conductor is required to get larger as the service size gets larger. (#6 for 100 amp #4 for 200 amp)
I believe #8 protected by conduit is also acceptable. (in the case of the rod and 100A service).
 
  #6  
Old 05-31-14, 03:00 AM
Member
Join Date: Jan 2014
Location: USA
Posts: 699
Traditionally 8' x 5/8" copper clad steed ground rod , or bigger .

If you hit rock , there are other ways of doing it .

God bless
Wyr
 
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


Thread Tools
Search this Thread
Display Modes
'