SER Cable - Electrical - DIY Chatroom Home Improvement Forum


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

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

Reply
 
Thread Tools Display Modes
Old 03-12-2010, 11:52 AM   #1
Newbie
 
Join Date: Mar 2010
Posts: 3
Rewards Points: 10
Question

SER Cable


I have added a large garage to my home. I currently have a 100 amp breaker panel and 100 amp meter base on the existing part, I have put a 200 amp meter combo on the far exterior (which is about 70') with a new 200 amp breaker panel back to back. I am putting a 100 amp breaker in the new 200 amp panel and running a service entrance cable from the existing 100 to the new 200 panel to this 100 amp breaker. My question is, what size service entry cable is needed to join these two panels that will supply the old 100 amp panel? Also, is aluminum safe or should I consider copper? All inside wiring is copper and this cable will be ran inside the garage. Some say if aluminum, it needs an inhibitor, some say that is only when connecting aluminum to copper, then I've read it can heat and be flamable. I am totally confused at this point.

Advertisement

oltl is offline   Reply With Quote
Old 03-12-2010, 12:04 PM   #2
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,975
Rewards Points: 2,206
Default

SER Cable


If I understand this correctly you are installing a new 200 amp service and abadoning the 100 amp meter and refeeding the the original 100 amp panel.
for 100 amp feeder back to 100 amp panel you will need 1/0-1/0-1/0-2 Al SER for 100 amps. Aluminum service cables are perfectly safe when installed properly. Antioxidants are not required by code but is an issue determined by the wire manufacturers. We always use it anyway just to be safe.

The refed 100 amp panel will need the equipment grounds and neutrals isolated as it will no longer be the service equipment.

Advertisement


Last edited by brric; 03-12-2010 at 03:38 PM.
brric is offline   Reply With Quote
Old 03-13-2010, 11:32 AM   #3
Newbie
 
Join Date: Mar 2010
Posts: 3
Rewards Points: 10
Default

SER Cable


Brric, thank you for your reply, this is very helpful. Just one more question, if I decide to go copper will a 2-2-2-3 or a 2-2-2-4 work for this? Codes don't really apply where I am, but I want to be safe. Thanks
oltl is offline   Reply With Quote
Old 03-13-2010, 11:41 AM   #4
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

SER Cable


Quote:
Originally Posted by oltl View Post
Codes don't really apply where I am, but I want to be safe. Thanks
Codes apply EVERYWHERE
Its called the National Electric Code
Scuba_Dave is offline   Reply With Quote
Old 03-13-2010, 11:45 AM   #5
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,975
Rewards Points: 2,206
Default

SER Cable


1-1-1-3 Cu SER would be code compliant.
brric is offline   Reply With Quote
Old 03-13-2010, 11:47 AM   #6
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,975
Rewards Points: 2,206
Default

SER Cable


Codes never apply unless they are adopted and enforced by the various AHJ's.
brric is offline   Reply With Quote
Old 03-13-2010, 11:55 AM   #7
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

SER Cable


Quote:
Originally Posted by brric View Post
Codes never apply unless they are adopted and enforced by the various AHJ's.
Can you name an area in the US that does not have an electric code ?
Code still applies even if it is not enforced
Its the Min standard to go by
Scuba_Dave is offline   Reply With Quote
Old 03-13-2010, 12:21 PM   #8
Newbie
 
Join Date: Mar 2010
Posts: 3
Rewards Points: 10
Default

SER Cable


Again, thanks brric. Scubba_Dave, I only meant not any particular city code. Didn't mean to offend anyone. I totally understand what you are saying, and I do respect the "National" codes. New at this, and how things can be misunderstood, next time I will be more careful with how I word things. First time to ask a question on line, so please forgive me. God Bless You and thank you for your reply also.
oltl is offline   Reply With Quote
Old 03-13-2010, 01:59 PM   #9
Electrical Contractor
 
kbsparky's Avatar
 
Join Date: Sep 2008
Location: Delmarva
Posts: 3,368
Rewards Points: 2,000
Default

SER Cable


If you use THHN/THWN copper conductors in a conduit, then all you would need is #3-3-4-8 for the 100 Amp feeder back to your original panel.

Advertisement

__________________
-KB

Life is uncertain -- eat dessert first!!
kbsparky is offline   Reply With Quote
Reply


Thread Tools
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
Need Advice Old Metal NM Cable Anchors bltglt507 Electrical 15 12-18-2009 05:31 PM
Cable question tommy_vercetti Home Theater 15 09-26-2009 10:10 AM
Underground service entrance cable requirements. kgt55 Electrical 9 06-22-2009 07:55 AM
Satellite vs. cable coaxial types? Badfish740 Home Theater 6 02-17-2009 12:00 PM
Coaxial Cable Question bahaisamurai Home Theater 9 08-08-2007 03:54 PM




Top of Page | View New Posts