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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-10-2010, 07:32 AM   #1
Newbie
 
Join Date: Sep 2010
Posts: 2
Share |
Default

2-2-2-4 aluim. to main lug HELP PLEASE


OK, I have a 200amp main panel in my house. I ran 2-2-2-4 220ft aluim. underground to my barn(it was cheap). In the barn i wired a total of five curcuits. in the main lug there is no bus for a ground. What do i do with wire #4? Do i need a ground rod at the main lug? If so do i put the 4th wire(ground) into the neutral bus and ground it with a rod? Also i was going to put this wire in a 60 amp breaker at the house, will a 2 awg wire even fit in there(I didnt buy one yet)? If not what should i do? Your help is appreciated already!!

nickpetri is offline   Reply With Quote
Old 09-10-2010, 07:48 AM   #2
Chicago, IL
 
Michael Thomas's Avatar
 
Join Date: Jan 2008
Location: Chicago, IL
Posts: 1,037
Default

2-2-2-4 aluim. to main lug HELP PLEASE


Take a look here:

http://ecmweb.com/grounding/electric..._vs_bonding_5/

__________________
Home Inspections, Infrared (Thermal Imaging) Leak Identification and Inspection Services, Roof, Attic, Building, Basement and Foundation Moisture Intrusion and Water Leak Inspections, Troubled Building Consultations - Serving Chicago and Suburbs http://paragoninspects.com/
Michael Thomas is offline   Reply With Quote
Old 09-10-2010, 08:10 AM   #3
Member
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 7,461
Default

2-2-2-4 aluim. to main lug HELP PLEASE


Add a ground bar/lug to the panel. The ground and neutral must be kept separate.
__________________
Do not PM with questions that can be asked in a forum. I will not respond.
joed is offline   Reply With Quote
Old 09-10-2010, 08:15 AM   #4
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Default

2-2-2-4 aluim. to main lug HELP PLEASE


You will need to buy and install a ground bar. Many times these panels will say on the box that the ground bar is not included. The neutral bar must be isolated from the panel case - it is usually mounted in standoffs. The ground bar will be screwed directly to the case. Yes, you need ground rod(s). All the ground wires will go to this bar.
The breaker will state what size wire it will accept.

Last edited by a7ecorsair; 09-10-2010 at 08:18 AM.
a7ecorsair is offline   Reply With Quote
Old 09-10-2010, 09:03 AM   #5
UAW SKILLED TRADES
 
Stubbie's Avatar
 
Join Date: Jan 2007
Location: Kansas
Posts: 4,989
Default

2-2-2-4 aluim. to main lug HELP PLEASE


Quote:
OK, I have a 200amp main panel in my house. I ran 2-2-2-4 220ft alum. underground to my barn(it was cheap). In the barn i wired a total of five circuits .. in the main lug there is no bus for a ground.
Quote:
What do i do with wire #4?
As mentioned you buy a ground bar for that model panel not another manufacturer. There will be swaged holes in the back of the panel that will allow you to bond the bar to the panel with screws included with the ground bar kit.

Quote:
Do i need a ground rod at the main lug?
Not at the neutral main lug. You will run a #6 solid copper (bare) and terminate it to the ground bar you install. The ground rods will be 8 ' you will attach the #6 using ground rod clamps approved for direct burial.


Quote:
If so do i put the 4th wire(ground) into the neutral bus and ground it with a rod?
Absolutely not see above


Quote:
Also i was going to put this wire in a 60 amp breaker at the house, will a 2 awg wire even fit in there?
Most 60 amp breakers will take a maximum #2 awg. That is probably the largest breaker you should use at that distance (220 ft).


A few helpful visual aides for you to look at for your installation






If you direct buried your feeder the only difference will be the burial depth which would be 24".
Attached Thumbnails
2-2-2-4 aluim. to main lug HELP PLEASE-feeder-sub-panel-1.jpg  
__________________
" One nice thing about the NEC articles ... you have lots of choices"

Stubbie

Last edited by Stubbie; 09-10-2010 at 12:51 PM.
Stubbie is offline   Reply With Quote
Old 09-10-2010, 09:17 AM   #6
UAW SKILLED TRADES
 
Stubbie's Avatar
 
Join Date: Jan 2007
Location: Kansas
Posts: 4,989
Default

2-2-2-4 aluim. to main lug HELP PLEASE


Ground bar kit




__________________
" One nice thing about the NEC articles ... you have lots of choices"

Stubbie

Last edited by Stubbie; 09-10-2010 at 09:20 AM.
Stubbie is offline   Reply With Quote
Old 09-10-2010, 09:27 AM   #7
UAW SKILLED TRADES
 
Stubbie's Avatar
 
Join Date: Jan 2007
Location: Kansas
Posts: 4,989
Default

2-2-2-4 aluim. to main lug HELP PLEASE


When you terminate your branch circuits equipment grounds and feeder equipment ground (the #4) and the ground rod grounding electrode conductor (#6) they will land on this ground bar.

Your grounded legs..ie..neutrals (white insulated wires) will land to the neutral bar on the insulated standoffs where your feeder neutral is connected.
__________________
" One nice thing about the NEC articles ... you have lots of choices"

Stubbie
Stubbie is offline   Reply With Quote
Old 09-10-2010, 09:32 AM   #8
Member
 
Join Date: Dec 2008
Posts: 162
Default

2-2-2-4 aluim. to main lug HELP PLEASE


And that ground bar clamp goes on BEFORE you start hammering your ground rod into the ground. Otherwise, the top will be so mushroomed out that you'll spend a good 20 mins with a file trying to get it to fit.


ASK ME HOW I KNOW. TWICE.
moondawg is offline   Reply With Quote
Old 09-10-2010, 09:49 AM   #9
Newbie
 
Join Date: Sep 2010
Posts: 2
Default

2-2-2-4 aluim. to main lug HELP PLEASE


Thank you all for quick responses - I now know what i need to do!!

nickpetri is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Murray main lug center - what type of tandem breaker? cl or ncl? plove79 Electrical 4 09-01-2010 08:08 PM
Dual Main Breakers dcwestcott Electrical 3 02-23-2009 07:26 PM
Adding ground bar to main panel WoodworkerDave Electrical 6 09-27-2008 04:52 PM
Replace main panel? And lots of other ?s Bcoleman6 Electrical 13 01-22-2008 09:40 AM
main lug vs main breaker for sub panel diyll Electrical 1 01-17-2008 08:18 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.