The most widely used cable in cathodic protection is commonly known as "HMW" or "HMWPE", which refers to the cable jacket or insulation.  HMWPE is short for High Molecular Weight Polyethylene, which is a durable, abrasion resistant and flexible.  This feature allows HMWPE to be "direct buried" and does not normally require installation conduit.  However, HMWPE does have some termperature and chemical limitations.
This cable insulation color is usually black (standard). However, other custom colors are available depending the cable size and quantity purchased.
Application
This cable is typically used as a DC cable in cathodic protection applications such as anode lead wires, header cables, structure connection, bond cables, test lead wires and more.  It can also be used for submerged installations in water tanks, offshore structures and other similar applications.T
 
Standards
Conductor
Stranded copper conductor conforms to ASTM Specification B-8.
 
Insulation
Insulation is high molecular weight polyethylene conforming to ASTM D-1248, Type 1, Class A, Category 5, Grades E4 & E5. Tensile Strengths Jl, J3. Available with high density polyethylene (Types II, III, IV) Class B & C (all colors).
Construction
Annealed, uncoated, stranded copper conductor, HMW polyethylene insulation. Surface printed.
 
ize (AWG)
No. of 
Strands
Circular
Mils
AWG
Diameter
Inches
Insulation
Thickness
Inches
Nominal
Diameter
Inches
Weight
Lbs per
1000 ft.
DC Ohms per 1000 ft.
at 20 C
#14
7
4,110
.0726
.110
.293
38
2.624