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CAUTION: Ensure that each power cable lug seats flush against the surface of the
terminal block as you are tightening the nuts. Ensure that each nut is properly
threaded into the terminal. Applying installation torque to the nuts when
improperly threaded can result in damage to the terminal.
CAUTION: You must ensure that power connections maintain the proper polarity.
The power source cables might be labeled (+) and (–) to indicate their polarity.
There is no standard color coding for DC power cables. The color coding used by
the external DC power source at your site determines the color coding for the leads
on the power cables that attach to the terminal studs on each power supply.
d. Replace the terminal block cover over the terminals on the faceplate.
Figure 71: Connecting the DC Cable
5. Verify that the power cabling is correct, that the cables do not touch or block access to router
components, and that the cables do not drape where people could trip over them.
6. Attach the power cable to the DC power source. Then switch on the dedicated customer-site two-
pole circuit breaker.
117
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