Cisco Systems 100/200/300/400 - page 93

D-3
Cisco Content Delivery Engine 100/200/300/400 Hardware Installation Guide
OL-13478-03
Appendix D Connecting DC Power Connecting DC Power to a CDE200
– Star washer
– PM ground ring lug 1
– PM ground ring lug 2
– Star washer
– Nut
Note Install star washers between the ring lug and chassis ground connection so that the star washers
dig into the metalwork finish and make a good ground bond. Use a wrench to tighten the nut and
secure the connection.
Figure D-3 CDE200 PM Ground Stud Order
Step 3 Attach the building ground wire to the building ground stud (see Figure D-4).
Warning The DC ground connection in the CDE serves as a functional earth point to maintain the full EMI and
EMC integrity of the equipment. The purpose is to mitigate the damaging effects of electrostatic
discharge. This connection should be installed by a trained service person and the equipment is to be
installed per local code or local authority having jurisdiction (AHJ). The building ground wire should
not exceed 3 meters in length and be sized similarity to the conductors used for the DC power
connections (–48 VDC and +Return).
1Nut 3PM ground ring lug
2Star washer 4PM ground stud
1
280227
2
3
324