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Cisco Aironet 1300 Series Outdoor Access Point/Bridge Hardware Installation Guide
OL-5048-02
Appendix F 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
Caution To prevent damage to the access point/bridge or power injector, connect all coax cables from the power
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).