Southwire® Type TFFN may be used as fixture wire, machine tool wiring, or appliance wiring material as specified in the National Electrical Code. Voltage for all applications is 600 volts. Allowable temperatures are as follows:
| Cond. Size | 18 AWG 18 AWG | |
| Conductor Number | 1 1 | |
| Cond. Strands | 16 16 | |
| Diameter Over Conductor (in) (cm) | 0.045 0.11 | inch cm |
| Insulation Thickness (mils) (mm) | 15 0.38 | mils mm |
| Jacket Thickness (mils) (mm) | 5 0.13 | mils mm |
| Approx. OD (in) (cm) | 0.085 0.22 | inch cm |
| Copper Weight (lbs/1000') (kgs/km) | 4 6 | lbs/1000' kgs/km |
| Approx. Weight (lbs/1000') (kgs/km) | 7 10 | lbs/1000' kgs/km |
TBA stock codes are estimations only and actual product may vary. Please wait until a stock code is assigned to purchase connectors and/or fittings.