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#74573 01/27/07 12:37 PM
Joined: Jan 2007
Posts: 12
G
Member
What does the markings U and R stand for in Type SE Style U and Type SE Style R. in 310.14

#74574 01/27/07 12:45 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
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
#74575 01/27/07 03:46 PM
Joined: Jan 2007
Posts: 12
G
Member
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.

#74576 01/27/07 05:40 PM
Joined: Mar 2004
Posts: 391
B
Member
Both Southwire and Encore Wire agree with Iwire. That's a lot of wires. [Linked Image] Has anyone ever actually seen armored service cable?

-John

[This message has been edited by BigJohn (edited 01-27-2007).]

#74577 01/28/07 04:05 AM
Joined: Feb 2004
Posts: 1,438
Member
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).]

#74578 01/28/07 07:26 AM
Joined: Jan 2007
Posts: 12
G
Member
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.

#74579 01/28/07 07:52 PM
Joined: Mar 2001
Posts: 2,056
R
Member
...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.


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