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Joined: Jan 2007
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What does the markings U and R stand for in Type SE Style U and Type SE Style R. in 310.14
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Joined: Jan 2003
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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
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Joined: Jan 2007
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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.
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Joined: Mar 2004
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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).]
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Joined: Feb 2004
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so does AIW and Cerro Wire 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).]
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Joined: Jan 2007
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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.
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Joined: Mar 2001
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...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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Posts: 7,382
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