EST3X Technical Reference Manual 231
Appendix A
System calculations
Summary
This appendix provides instructions and worksheets for calculating wire lengths
and sizing standby batteries.
Content
Network data riser limits 232
Data network specifications 232
Cable properties 233
Calculating a maximum length 233
Calculating maximum wire capacitance per foot 234
Signature data loop wire length 234
Determine the maximum allowable branch length 235
Determining the total loop length 241
Notification appliance signaling line circuit calculations 242
Introduction 242
What you will need 242
Worksheet method 244
Equation method 245
25 or 70 VRMS NAC wire length 248
Analog addressable circuit wire length 250
Cabinet battery 250
Battery calculations 251
Fiber optic cable worksheet 255
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