Typical hand held Ohm meters will not measure 10MOhms, instead they will auto range to acquire a measurement
and give an out-of-range reading. This is an acceptable reading provided that the meter is in calibration.
Note
Step 3
Use the crimping tool mandated by the lug manufacturer to crimp the lugs to the DC-input cables. For details on lugs,
see the DC Power Systems, on page 6.
The cable should be sized according to local and national installation requirements. Use only copper cable.
The power supply terminal block lug width is 0.60 inch (1.50 cm). The terminal posts are centered 0.63 inches
(5/8 inch) (1.60 cm) apart and are M6-threaded. We recommend that you use an appropriately sized 180-degree
(straight) industry standard 2-hole, standard barrel compression lug.
Note
Step 4
Using the wrench, attach the positive and negative cable pairs to each terminal block on the upper power shelf (Power
A). Start with PM0 (located on the right side) and move left, finishing with PM7(located on the left side). Use the torque
wrench to tighten to a torque of 20 in.-lb (2.26 N-m). Route the power cables for the upper power shelf to the left.
Step 5
Using the wrench, attach the positive and negative cable pairs to each terminal block on the lower power shelf (Power
B). Start with PM0 (located on the right side) and move left, finishing with PM7(located on the left side). Use the torque
wrench to tighten to a torque of 20 in.-lb (2.26 N-m). Route the power cables to the right.
Ensure cables are dressed correctly to ensure enough clearance to install the upper air
grille.
Note
What to Do Next
After the DC power shelf wiring has been installed, attach the terminal block covers. Continue to the Installing
DC Terminal Block Covers, on page 33 for instructions.
Cisco CRS Routers 16-Slot Line Card Chassis Enhanced Router Installation Guide
32
Installing Power Components
Installing AC or DC Power Shelf Wiring
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