Chater 9 tables

[arnettda]

The asteric that refers to RHH, RHW and RHW2 without outer covering what does that actually mean. I believe most of the wire is without outer covering.

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[Dennis Alwon]

I would like to see a picture but I believe the old Rhw with an outer jacket was a cloth material over the nylon or rubber insulation

Note 2 at the end of Annex C, Table C.1 indicates that an asterisk (*) with conductor insulation types RHH*, RHW*, and RHW-2* means that these types don’t have an outer covering. Insulation types RHH, RHW, and RHW-2 (without the asterisk) do have an outer cover. This is a cover (which may be a fibrous material) that increases the dimensions of the conductor more than the thin nylon cover encountered with conductors such as THHN

 

[arnettda]

So with today's wire when i try to do a pipe fill calculation I would always use the RHW with the asteric!

 

[Dennis Alwon]

That sounds right to me