Network Router User Manual

cables insert into the field-wiring terminals located on each power supply—the input
terminal is labeled -48V and the return terminal is labeled RTN.
CAUTION: Before router installation begins, a licensed electrician must attach a cable
lug to the grounding and power cables that you supply. A cable with an incorrectly
attached lug can damage the router (for example, by causing a short circuit).
Figure 57: DC Power and Grounding Cable Connections
For information about the DC power supply, including electrical specifications and
a description of components, see “DC Power Supply” on page 21. For instructions
on connecting the DC power and grounding cables during initial installation, see
“Connecting Power to a DC-Powered Router” on page 63. For instructions on replacing
the cables on an operating router, see “Disconnecting and Connecting DC
Power” on page 116.
NOTE: Power cords and cables must not block access to router components or drape
where people could trip on them.
Power Guidelines, Requirements, and Specifications ■ 181
Appendix C: Power Requirements, Guidelines, and Specifications