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#74573 - 01/27/07 01:37 PM Conductor marking?  
guschash  Offline
Member
Joined: Jan 2007
Posts: 12
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


Work Gear for Electricians and the Trades

#74574 - 01/27/07 01:45 PM Re: Conductor marking?  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
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

#74575 - 01/27/07 04:46 PM Re: Conductor marking?  
guschash  Offline
Member
Joined: Jan 2007
Posts: 12
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.


#74576 - 01/27/07 06:40 PM Re: Conductor marking?  
BigJohn  Offline
Member
Joined: Mar 2004
Posts: 391
Boston, MA
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 05:05 AM Re: Conductor marking?  
Lostazhell  Offline
Member
Joined: Feb 2004
Posts: 1,431
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).]


#74578 - 01/28/07 08:26 AM Re: Conductor marking?  
guschash  Offline
Member
Joined: Jan 2007
Posts: 12
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.


#74579 - 01/28/07 08:52 PM Re: Conductor marking?  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
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.



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