Cisco XR 12416 - Manual (Page 19)

2-19
Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide
OL-17440-01
Chapter 2 Preparing for Installation
Site Requirement Guidelines
You must terminate DC power cables using cable lugs at the power shelf end.
Ensure the lugs are dual-hole and that they are able to fit over M6 terminal studs
at 0.625-inch (15.88-mm) centers (for example, Panduit Part Number
LCD8-14A-L or equivalent).
Figure 2-7 shows the type of lug required for the DC-input cable connections.
Figure 2-7 DC Power Cable Lug
Figure 2-8 shows a source DC power distribution scheme for a DC-input power
shelf.
It shows two power cables attached to the DC-input power lugs for power shelf
bay B1 (far right bay of the DC-input power shelf when looking at the back panel).
The color coding of the source DC power cable leads depends on the color coding
of the site DC power source. Typically, green or green and yellow indicate that the
cable is a ground cable. Because there is no color code standard for the source DC
wiring, be sure that the power cables are connected to the DC-input power shelf
terminal studs using the proper positive (+) and negative (–) polarity.
• In some cases, the source DC cable leads might have a positive (+) or a
negative (–) label. This is a relatively safe indication of the polarity, but you
must verify the polarity by measuring the voltage between the DC cable leads.
When making the measurement, the positive (+) lead and the negative (–) lead
must always match the (+) and (–) labels on the power shelf.
• A green (or green and yellow) cable typically indicate that it is a ground
cable.
Crimp area
25527
2.24
0.48
0.08
0.25 0.37 0.63
End View
Ø 0.267
2 holes
All measurements in inches