Crisis EVC Network Expander Installation Guide
Page 11
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4.4.2 Crisis EVC Network Master Station & Expander Panel - Ring Wiring
If more than 8 lines are required then an Expander Panel will be required in addition to the EVC Network Master Station, with the outstations
shared between both the EVC Network Master Station and the Expander Panel. The system has to be wired as a ring as shown in the schematic
below. This ensures that the loss of any single cable will not affect the operation of more than one outstation.
1 off 2 Core 1.5mm CSA
Standard Rated Fire Cable
1 off 2 Core 1.5mm CSA
Enhanced Rated Fire Cable
1 off 2 Core 1mm CSA
Standard PVC Minimum
Network 2 off 2 Core 1.5mm
CSA Standard Fire Rated
Cable unless Type A or
Type C Outstations are used,
then it must be Enhanced.
Figure 5: Typical Ring/Network Wiring Diagram - Crisis EVC Network Master Station & Expander