Cisco AIR-BR1310G-A-K9 - Aironet 1310 Outdoor Access Point/Bridge Hardware Installation Manual page 110

Appendix H Load-Dump Protection for Transportation Vehicles
Load-Dump Protection
Warning Connect the unit only to a DC power source that complies with the safety extra-low voltage (SELV)
requirements in IEC 60950 based safety standards. Statement 1033
To prevent damage to the access point/bridge or power injector, connect all coax cables from the power
Caution
injector to the access point/bridge and connect the power jack to the power injector before applying
power.
The external load-dump protection device must be installed across the access point/bridge power cable
between the vehicle battery and the access point/bridge. Ensure that the wire size (gauge) is large enough
to provide a minimum of 10 VDC to the power injector at all vehicle operating temperatures.
For vehicle cable selection criteria, refer to ISO 6722 (Road Vehicles, 60 V and 600 V Single-core
Cables; Dimensions, Test Methods and Requirements).
Cisco Aironet 1300 Series Wireless Outdoor Access Point/Bridge Hardware Installation Guide
H-2
OL-5048-06