Cisco Asr 903 Aggregation Services Router Hardware Installation Guide - Cisco ASR 903 Hardware Installation Manual

Safety with Electricity
High leakage current – earth connection essential before connection to system power supply. Statement
Warning
342
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement
1001
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated for 550 W DC Power Supply (PID A900-PWR550-D and A900-PWR550-D-E):
For a -48/-60 VDC installation, the wire shall be 12 AWG minimum with a 20 A circuit breaker. For a
24 VDC installation, the wire shall be 8 AWG minimum with a 40 A branch circuit breaker. Statement
1005
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated for 1200 W DC Power Supply (PID A900-PWR1200-D): For a -48/-60 VDC
installation, the wire shall be 10 AWG minimum with a 50 A circuit breaker. Statement 1005
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. For an AC
installation, ensure that the branch circuit breaker is rated a maximum 20A.
Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the
same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer's instructions. Statement 1015
Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed
only through the use of a special tool, lock and key, or other means of security. Statement 1017
Warning Take care when connecting units to the supply circuit so that wiring is not overloaded. Statement 1018

Cisco ASR 903 Aggregation Services Router Hardware Installation Guide

58
Preparing for Installation