Vertical Riser Cable Support - another question

[451F]

There are two #10 THHN stranded conductors in a 1 inch rigid conduit. The installation requires a Vertical Riser Cable support. None of the manufacturers seem to make a device for such a small pipe and conductors. Some electricians tie a knot in the conductors at the top fitting. What do you do?

 

[ron]

I would use a product like an OZ Gedney http://www.emersonindustrial.com/en...upports/AEC_MC007_OZGEDNEY_Cable_Supports.pdf
except they don't make it for 1" RMC, they start at 1-1/2"

Otherwise I would use a flavor of a Kellums grip
http://ecatalog.hubbell-wiring.com/...x?Dest=hubbell-wiring.com/press/catalog/t.pdf

 

[451F]

Thanks for the response Ron,

Otherwise I would use a flavor of a Kellums grip
http://ecatalog.hubbell-wiring.com/...x?Dest=hubbell-wiring.com/press/catalog/t.pdf

I see in the link that the minimum cable size is 0.5" diameter. However, two #10 THHN are (0.164" diameter X 2 conductors) 0.328" and there is no outer cable over the slippery nylon to provide something for the metal net to grip.

Perhaps there are not enough towers for a company to make a support this small. Oh, wait - I forgot about all of the cell towers, water towers, television and radio towers...hmm...perhaps I should invent something.

What does the code say about using a device that is not NRTL listed or labeled in this application? (My CD rom is broken and my paper code is out of date...)

 

[Smart $]

... What does the code say about using a device that is not NRTL listed or labeled in this application?

300.19 does not mention anything on method being listed or labeled.

 

[masterinbama]

I have use poly twine and half hitches on the towers I wired.

 

[Cow]

In the few I've done, I've tied a loose knot.