Fire protective signaling circuits. Also for smoke detectors, voice communications, audio control and initiating circuits. Article 760 of the NEC. Minimum Temperature -10ºC , Maximum Temperature 75ºC
| Cable Type | FPLR FPLR | |
| Cond. Size | 18 AWG 18 AWG | |
| Conductor Number | 4 4 | |
| Cond. Type | CU CU | |
| Cond. Strands | Solid Solid | |
| Diameter Over Conductor (in) (cm) | 0.040 0.10 | inch cm |
| Insulation Thickness (mils) (mm) | 10 0.25 | mils mm |
| Jacket Thickness (mils) (mm) | 15 0.38 | mils mm |
| Approx. OD (in) (cm) | 0.242 0.61 | inch cm |
| Copper Weight (lbs/1000') (kgs/km) | 20 30 | lbs/1000' kgs/km |
| Approx. Weight (lbs/1000') (kgs/km) | 33 49 | lbs/1000' kgs/km |
| DC Resistance at 25C (ohms/1000') (ohms/km) | 6.669 9.92 | ohms/1000' ohms/km |
| AC Resistance at 75C (ohms/1000') (ohms/km) | 8.030 11.95 | ohms/1000' ohms/km |
| Inductive Reactance (ohms/1000') (ohms/km) | 0.036 0.05 | ohms/1000' ohms/km |
| Min. Bend Radius (in) (cm) | 0.9 2.29 | inch cm |
| Allowable Ampacity Raceway 75C | - - | |
| Allowable Ampacity Raceway 90C | 11 11 |
