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

   
Topic Options
Rate This Topic
#74573 - 01/27/07 09:37 AM Conductor marking?
guschash Offline
Member
Registered: 01/25/07
Posts: 12
Loc: Walbridge,Ohio,wood
What does the markings U and R stand for in Type SE Style U and Type SE Style R. in 310.14
Top
Work Gear for Electricians and the Trades
#74574 - 01/27/07 09:45 AM Re: Conductor marking?
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
I have no doubt 'R' stands for round.

I had always believed the 'U' meant flat as all SEU I have seen is flat.

However I have been shown that the 'U' stands for un-armored.

At one point typical SE cable was armored.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts
Top
#74575 - 01/27/07 12:46 PM Re: Conductor marking?
guschash Offline
Member
Registered: 01/25/07
Posts: 12
Loc: Walbridge,Ohio,wood
Ok, Thank you. I looked in the American Electricians Handbook,I couldn't find it I was sure it would be in there and it probably is but I didn't find it.
Top
#74576 - 01/27/07 02:40 PM Re: Conductor marking?
BigJohn Offline
Member
Registered: 03/06/04
Posts: 352
Loc: Boston, MA
Both Southwire and Encore Wire agree with Iwire. That's a lot of wires. Has anyone ever actually seen armored service cable?

-John

[This message has been edited by BigJohn (edited 01-27-2007).]
Top
#74577 - 01/28/07 01:05 AM Re: Conductor marking?
Lostazhell Offline
Member
Registered: 02/21/04
Posts: 1248
Loc: Bakersfield, CA (Originally Or...
so does AIW and Cerro Wire

Quote:
SEU
Service Entrance Cable (type SE, style U). (Unarmored).

SER
Service round entrance cable (Type SE, Style R).


from Cerro Wire


[This message has been edited by Lostazhell (edited 01-28-2007).]
Top
#74578 - 01/28/07 04:26 AM Re: Conductor marking?
guschash Offline
Member
Registered: 01/25/07
Posts: 12
Loc: Walbridge,Ohio,wood
Thanks Lastazhell, After reading what it says under " U ", I am leaning towards " U " having to do with the way wire is layer in the cable.
Top
#74579 - 01/28/07 04:52 PM Re: Conductor marking?
Redsy Offline
Member
Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
...Has anyone ever actually seen armored service cable?...

Several years ago I sent in a picture of some ASE.

I don't know what happened to the picture, but it looks like standard SEU with a flat metal tape wrapped underneath the jacket.
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Looking for older post
by sparkyinak
Today at 12:27 AM
License exam
by TRUE POWER
Yesterday at 11:33 PM
Members: Non-Members: Did you know?
by Admin
Yesterday at 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM

Who's Online
0 registered (), 90 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Member Since: 02/21/04
Posts: 1248

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