Conductors: Bare, soft annealed copper per ASTM B3.
- Sizes 8 - 2 AWG: Concentric, compressed or compact stranding, Class B (7 strands) per ASTM B-8 and UL Table 13.1 or 19 wire combination stranding per ASTM B- 787.
- Sizes 1 – 4/0 AWG: Concentric, compressed or compact stranding, Class B (19 strands) per ASTM B-8 and UL Table 13.1 or 19 wire combination stranding per ASTM B-787.
- Sizes 250 – 500 MCM: Concentric, compressed or compact stranding, Class B (37 strands) per ASTM B-8 and UL Table 13.1.
- Sizes 750 MCM: Concentric, compressed or compact stranding, Class B (61 strands) per ASTM B-8 and UL Table 13.1.
Insulation: High dielectric strength polyvinyl chloride, UL-1581 Table 50.145 (THWN 75˚C), UL- 1581 Table 50.155 (THHN 90˚C).
Thickness: UL-83 Table 15.8.
Conductor Jacket: Nylon (UL-83 par. 14.1.
Thickness: UL-83 table 15.8.
Cable Assembly: The applicable number of conductors and grounding wire are cabled together with fillers and optional binder tape.
Color Code: Black insulation with ICEA Method 4 printed numbers.
Overall Jacket: A black, gas/vapor tight, flame resistant, VW-1 rated Polyvinyl Chloride (PVC) jacket is applied over the assembly. The surface profile of the jacket shall approximate that of the underlying assembly. A high strength nylon rip cord shall be placed under the jacket to facilitate stripping of the jacket.
Identification: “Sizes (AWG) or MCM/No. of CDRS w/ground Type TC –ER THHN or THWN CDRs. Sun resistant and oil resistant, 600V. (UL) Direct Burial Ft4/IEEE 1202 (Sequential Footage)”.
