enblethen wrote:
10/3 has white, black and red, no green. 10/3 with ground is white, black and red with bare ground. This is for Romex!
SO has green.
OP wasn't talking about "Romex".
There were talking about this..
Which is "SJ" type of cable which is specified as 10/3 Sxxx and has one black (Hot), one white (Neutral) and one green (Ground).
Romex is specified differently because when the ground is included it is a bare wire (no insulation).
That is why Romex is specified like 10/3 as three insulated conductors (black, red, white) and no ground.
Romex 10/3 WITH ground is black, red, white and BARE.
In both cases only the insulated conductors are counted..
So if one wanted a SJ cord to handle 120V/240V they would need 10/4 which is black, red, white and green and the equivalent in Romex would be 10/3 WITH ground or black, red, white BARE..