| Trade Name |
Letter |
Max. Temp. |
Application Provisions |
| FLOURINATED ETHYLENE PROPYLENE | FEP OR FEPB | 90¡C 194¡F 200¡C 392¡F | DRY AND DAMP LOCATIONS DRY LOCATIONS - SPECIAL APPLICATIONS (2) |
| MINERAL INSULATION (METAL SHEATHED) | MI | 90¡C 194¡F 250¡C 482¡F | DRY AND WET LOCATIONS SPECIAL APPLICATIONS (2) |
| MOISTURE, HEAT AND OIL RESISTANT THERMOPLASTIC | MTW ** | 60¡C 140¡F 90¡C 194¡F | MACHINE TOOL WIRING IN WET LOCATIONS, NFPA#79-ART. 670 MACHINE TOOL WIRING IN DRY LOCATIONS, NFPA#79-ART. 670 |
| PAPER | | 85¡C 185¡F | FOR UNDERGROUND SERVICE CONDUCTORS, OR BY SPECIAL PERMISSION |
| PERFLUOROALKOXY | PFA | 90¡C 194¡F 200¡C 392¡F | DRY AND DAMP LOCATIONS DRY LOCATIONS - SPECIAL APPLICATIONS (2) |
| PERFLUOROALKOXY | PFAH | 250¡C 482¡F | DRY LOCATIONS ONLY. ONLY FOR LEADS WITHIN APPARATUS OR WITHIN RACEWAYS CONNECTED TO APPARATUS, (NICKEL OR NICKEL COATED COPPER ONLY). |
| THERMOSET THERMOSET | RH RHH | 75¡C 167¡F 90¡C 194¡F | DRY AND DAMP LOCATIONS DRY AND DAMP LOCATIONS |
| MOISTURE-RESISTANT THERMOSET MOISTURE-RESISTANT THERMOSET | RHW(5) RHW-2 | 75¡C 167¡F 90¡C 194¡F | DRY AND WET LOCATIONS - OVER 2,000 VOLT INSULATION SHALL BE OZONE-RESISTANT DRY AND WET LOCATIONS |
| SILICONE | SA | 90¡C 194¡F 125¡C 257¡F | DRY AND DAMP LOCATIONS FOR SPECIAL APPLICATIONS (2) |
| THERMOSET | SIS | 90¡C 194¡F | SWITCHBOARD WIRING ONLY |
| THERMOPLASTIC AND ASBESTOS | TA | 90¡C 194¡F | SWITCHBOARD WIRING ONLY |
| THERMOPLASTIC AND FIBROUS OUTER BRAID | TBS | 90¡C 194¡F | SWITCHBOARD WIRING ONLY |
| EXTENDED POLYTETRAFLUOROETHYLENE | TFE | 250¡C 482¡F | DRY LOCATIONS ONLY. ONLY FOR LEADS WITHIN APPARATUS OR WITHIN RACEWAYS CONNECTED TO APPARATUS, (OR AS OPEN WIRING) (NICKEL OR NICKEL COATED COPPER ONLY). |
| HEAT-RESISTANT THERMOPLASTIC | THHN | 90¡C 194¡F | DRY AND DAMP LOCATIONS |
| MOISTURE AND HEAT-RESISTANT THERMOPLASTIC | THHW | 75¡C 167¡F 90¡C 194¡F | WET LOCATION DRY LOCATION |
| MOISTURE AND HEAT-RESISTANT THERMOPLASTIC | THW (5) | 75¡C 167¡F 90¡C 194¡F | DRY & WET LOCATIONS SPECIAL APPL. WITHIN ELECTRIC DISCHARGE LIGHTING EQUIPMENT LIMITED TO 1000 OPEN-CIRCUIT VOLTS OR LESS, (SIZE 14-8 ONLY AS PERMITTED IN SECTION 410-31). |
| MOISTURE AND HEAT-RESISTANT THERMOPLASTIC | THWN (5) | 75¡C 167¡F | DRY AND WET LOCATIONS |
| MOISTURE RESISTANT THERMOPLASTIC | TW | 60¡C 140¡F | DRY AND WET LOCATIONS |
| UNDERGROUND FEEDER AND BRANCH-CIRCUIT CABLE-SINGLE CONDUCTOR, (FOR TYPE "UF" CABLE EMPLOYING MORE THAN 1 CONDUCTOR. (SEE NEC ART. 339) | UF | 60¡C 140¡F 75¡C 167¡F (8) | SEE ARTICLE 339 N.E.C. |
| UNDERGROUND SERVICE ENTRANCE CABLE SINGLE CONDUCTOR, (FOR TYPE "USE" CABLE EMPLOYING MORE THAN 1 CONDUCTOR. SEE N.E.C. ART. 338) | USE (5) | 75¡C 167¡F | SEE ARTICLE 338 N.E.C. |
| THERMOSET | XHH | 90¡C 194¡F | DRY AND DAMP LOCATIONS |
| MOISTURE-RESISTANT THERMOSET | XHHW (5) | 90¡C 194¡F 75¡C 167¡F | DRY AND DAMP LOCATIONS WET LOCATIONS |
| MOISTURE-RESISTANT THERMOSET | XHHW-2 | 90¡C 194¡F | DRY AND WET LOCATIONS |
| MODIFIED ETHYLENE TETRAFLUOROETHYLENE | Z | 90¡C 194¡F 150¡C 302¡F | DRY AND DAMP LOCATIONS DRY LOCATIONS SPECIAL APPLICATIONS (2) |
| MODIFIED ETHYLENE TETRAFLUOROETHYLENE | ZW (5) | 75¡C 167¡F 90¡C 194¡F 150¡C 302¡F | WET LOCATIONS DRY AND DAMP LOCATIONS DRY LOCATIONS - SPECIAL APPLICATIONS (2) |
Cables
