readily distinguishable solid color or colors.

(B) Tracer in Braid. A tracer in a braid of any color con- trasting with that of the braid and no tracer in the braid of the other conductor or conductors. No tracer shall be used in the braid of any conductor of a flexible cord that contains a conductor having a braid finished to show white or gray.

Exception: In the case of Types C and PD and cords hav- ing the braids on the individual conductors finished to show white or gray. In such cords, the identifying marker shall be permitted to consist of the solid white or gray finish on one conductor, provided there is a colored tracer in the braid of each other conductor.

(C) Colored Insulation. A white or gray insulation on one

conductor and insulation of a readily distinguishable color
or colors on the other conductor or conductors for cords
having no braids on the individual conductors.
For jacketed cords furnished with appliances, one conductor having its insulation colored light blue, with the other conductors having their insulation of a readily distinguishable color other than white or gray.

Exception: Cords that have insulation on the individual conductors integral with the jacket.

The insulation shall be permitted to be covered with an outer finish to provide the desired color.

(D) Colored Separator. A white or gray separator on one conductor and a separator of a readily distinguishable solid color on the other conductor or conductors of cords having insulation on the individual conductors integral with the jacket.

(E) Tinned Conductors. One conductor having the indi vidual strands tinned and the other conductor or conductors

having the individual strands untinned for cords having
insulation on the individual conductors integral with the
jacket.

(F) Surface Marking. One or more ridges, grooves, or white stripes located on the exterior of the cord so as to identify one conductor for cords having insulation on the

individual conductors integral with the jacket.

400.23 Equipment Grounding Conductor Identifica tion. A conductor intended to be used as an equipment grounding conductor shall have a continuous identifying

marker readily distinguishing it from the other conductor or conductors. Conductors having a continuous green color or a continuous green color with one or more yellow stripes
shall not be used for other than equipment grounding
con
ductors. The identifying marker shall consist of one of
the
methods in 400.23(A) or (B).

(A) Colored Braid. A braid finished to show a continuous green color or a continuous green color with one or more yellow stripes.

(B) Colored Insulation or Covering. For cords having no braids on the individual conductors, an insulation of a continuous green color or a continuous green color with one or more yellow stripes.

400.24 Attachment Plugs. Where a flexible cord is pro vided with an equipment grounding conductor and equipped with an attachment plug, the attachment plug

shall comply with 250.138(A) and (B).

III. Portable Cables Over 600 Volts, Nominal

400.30 Scope. Part III applies to multiconductor portable cables used to connect mobile equipment and machinery.

400.31 Construction.