Description
| Spec Rating | Voltage Rating | Applications | Installations | Conductor Configuration | Mechanical Characteristics |
| 20-2 | 600 | Traffic Signal – Fire Protective Signal | Aerial or Duct | Twisted Pairs | Shielded, PE Outer Jacket |
| 20-3 | 600 | Traffic Signal – Fire Protective Signal | Figure-8 Aerial, Integral Msgr. | Cabled Conductors | PE Outer Jacket |
| 20-4 | 600 | Traffic Signal – Fire Protective Signal | Figure-8 Aerial, Integral Msgr. | Twisted Pairs | Shielded, PE Outer Jacket |
| 20-5 | 600 | Traffic Signal – Fire Protective Signal | Aerial, Duct or Buried | Cabled Conductors | Shielded, PE Inner and Outer Jacket |
| 20-6 | 600 | Traffic Signal – Fire Protective Signal | Aerial, Duct or Buried | Twisted Pairs | Shielded, PE Inner and Outer Jacket |
