The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
Yesterday at 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 15
HotLine1 10
Trumpy 8
Texas_Ranger 8
sparkyinak 7
Who's Online
0 registered (), 215 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#100273 - 11/08/06 03:13 AM New MC all purpose cable
shortcircuit Offline
Member

Registered: 06/27/04
Posts: 608
Loc: massachusetts
Well, there is a new MC product on the market from Southwire which uses an aluminum bonding wire in contact with the outer sheath for grounding.

Just snip the bond at the end of the sheath where the wires emerge and slip the connector on and connect to box. Also can be used with box clamps.

Here is a link to Southwire...
http://www.southwire.com/processGetArticle.do?commonId=c3ad73cd00d7c010VgnVCM1000002702a8c0____

Anybody used this product yet?

Comments?

shortcircuit

Top
2014 / 2011 NEC & Related Books and Study Guides
#100274 - 11/08/06 04:01 AM Re: New MC all purpose cable
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Is it actually on sale yet?

I have not seen anything but pictures of it yet.

I doubt I will be using it as most all our jobs require a copper EGC.

While we often run MC in place of EMT with the engineers approval I will be very surprised if we get the engineer to remove the copper EGC specification.

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

Top
#100275 - 11/08/06 08:48 AM Re: New MC all purpose cable
SteveFehr Offline
Member

Registered: 03/19/05
Posts: 1192
Loc: Chesapeake, VA
iwire, illustrations on that site imply it's availible with a green wire in addition to the Al ground.

Top
#100276 - 11/08/06 09:07 AM Re: New MC all purpose cable
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
That would be $$$hospital$$$grade$$$MC$$$ for redundant grounding.

Did I mention? $$$$$

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

Top
#100277 - 11/08/06 12:31 PM Re: New MC all purpose cable
Ron Offline
Member

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
How is the new product different than AC cable? Sounds the same.

Edit, I just saw the chart in the link showing the differences.

[This message has been edited by Ron (edited 11-08-2006).]
_________________________
Ron

Top
#100278 - 11/08/06 04:42 PM Re: New MC all purpose cable
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
The new stuff differs mainly in that the ground wire is aluminum, full size (for the ampacity), and separate from the jacket.

My own suspicion is that this is a product that is intended to replace both AC and MC. Don't be surprised if, in a few code cycles, the sections on AC and MC get combined, and the "normal" products are no longer made.

Top
#100279 - 11/08/06 06:17 PM Re: New MC all purpose cable
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
From what I've been told by an AFC (Southwire competitor) engineer, AC and MC cables are treated differently when it comes to listing.
AC cable has to meet pre-established specifications, and MC is subject only to performance testing.

AC & MC were under the same NEC Article (334) up until '78

Top
#100280 - 11/09/06 12:24 AM Re: New MC all purpose cable
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
While back a supply rep had some at the supply house - that was several months ago... From what I understand, they were still seeking approval for connectors for it to be approved as a ground path. Did they sort that out yet?
_________________________
Mark Heller
"Well - I oughta....." -Jackie Gleason

Top
#100281 - 11/09/06 08:55 AM Re: New MC all purpose cable
Zapped Offline
Member

Registered: 10/01/02
Posts: 481
Loc: Huntington Beach, CA, USA
I guess I'm not a big fan of the idea because I've seen what can happen to other mechanical grounds on RMC, EMT, etc. I still always run a ground wire and bond (pigtail) to my metal boxes. Gounding is a safety issue, and I hate to think of what can happen as a result of loose or improperly installed connector. I've seen a lot of "solutions" and "time-saving" devices that have tried to circumvent a wired-in ground, but I trust none of them. IT's not worth the extra minute or two it might save. IMHO.

Top
#100282 - 11/09/06 03:44 PM Re: New MC all purpose cable
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Bob:
I saw a few samples of this a while back...
Talked to a few guys on different sites that had the sample dropped off.

NO ONE seemed to have any interest. The #10 AL appeared to be a candidate for PITA award.

I do not see any advantage, nor did anyone else. And as above...what about the connectors??

John
_________________________
John

Top
Page 1 of 2 1 2 >



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals