Cisco ASR 902U Hardware Installation Manual page 21

Overview
Output voltage
Wire gauge for DC input power connections
Maximum power output
Figure 4: DC PSU Module (A900-PWR1200-D)
Label
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Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
Power Supply Features
+12 VDC
12 AWG minimum for –48/-60 VDC
8 AWG minimum for 24 VDC
Connector accepts 8 AWG maximum
550 W
Component
T-shaped connector
7