Cisco BWX 8415 Installation And Commissioning Manual page 15

Chapter 1 Safety
c.
d.
e.
OL-19519-01
P R E L I M I N A R Y
The external DC power source, if current limited, shall have the limit set-point configured
higher than the BS Chassis breaker rating. (i.e. - If the power source is current limited to 10
amps and the BS circuit breaker is a 15 amp breaker, it will never trip because the power supply
is limiting the current to 10 amps.)
The external supply "Return" and the BS chassis shall be connected to a common Earth ground.
The BS Chassis has an external ground lug provided. The "+" terminal on the external power
supply is considered "Return or RTN" on a -48V system.
Do not remove protective earth connection before disconnecting the BS from the DC power
supply.
BWX 8415 Basestation Installation and Commissioning Guide
Safety Information
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