Appendix B: Worksheets 
P/N 3102351-EN • REV 005 • ISS 28DEC18  201 
Notes 
[1]   Use the manufacturer’s published wire resistance expressed in ohms per foot. For typical values, see 
Table 46 on page 197. 
[2]   Use the Maximum operating current at worst-case VFWR from the installation or catalog sheet of each 
device. 
[3]   For UL regulated notification appliances, this voltage must not drop below 16 VFWR. For other devices, get 
the minimum operating VFWR from the installation or catalog sheet.