Bruce L. Bergman wrote:
On Fri, 01 Aug 2008 19:31:19 -0400, Wes wrote:

Bruce L. Bergman wrote:


There are many grades, the US System is 'SO' for heavy duty rubber
jacket, Junior cord for light duty 'SJO'. The thermoplastic jacket
has a T in the mark - 'STO' and 'SJTO' The O is oil resistant, they
tack a W on the end for water resistant 'STOW'.

The J really means junior?


Youbetcha! Occam's Razor strikes again. And I have seen it
confirmed in several cable catalogs.

SO will take a lot more abuse than SJO.

-- Bruce --

Letter Letter Designation
S Standard.
SJ Junior.
E (Elastomer) Thermoplastic Rubber.
T Thermoplastic.
O Oil resistant outer jacket.
OO Oil resistant insulation and outer jacket.
W Approved for outdoor use.

--Winston