Cisco 3800 Series - Manual (Page 45)

Grounding the Router
15
Installing Cisco 3800 Series Routers in an Equipment Rack
OL-5969-01
You must connect the router chassis to a reliable earth ground. The ground wire must be installed in
accordance with local electrical safety standards.
• For NEBS-compliant grounding, use size AWG 6 (13 mm 2 ) wire and the two-hole barrel lug
provided in the router accessory kit.
• For NEC-compliant grounding, use size AWG 14 (2 mm 2 ) or larger wire and an appropriate
user-supplied ring terminal.
• For EN/IEC 60950-compliant grounding, use size AWG 18 (1 mm 2 ) or larger wire and an
appropriate user-supplied ring terminal.
To connect the router to a reliable earth ground, follow these steps:
Step 1 Strip one end of the ground wire to the length required for the two-hole barrel lug or terminal.
• For the NEBS two-hole barrel lug, approximately 0.75 in. (20 mm)
• For a user-provided ring terminal, as required
Step 2 Crimp the ground wire to the two-hole barrel lug or ring terminal, using a crimping tool of the
appropriate size.
Step 3 Attach the two-hole barrel lug or ring terminal to the router chassis as shown in Figure 8 , Figure 9 ,
Figure 10 , or Figure 11 . For a two-hole barrel lug, use the two screws with captive locking washers
provided. For a ring terminal, use one of the screws provided. Tighten the screws to a torque of 8 to 10
in-lb (0.9 to 1.1 N-m).
Step 4 Connect the other end of the ground wire to a suitable grounding point at your site.
Figure 8 NEBS-Compliant Two-Hole Barrel Lug Ground Connection on Cisco 3825 Router
117015
EN
NMD- ESW- 36
23x 5x
FastEthernet Ports
22x 4x 21x 3x 20x 2x 19x 1x 18x 0x
29x 11x 28x 10x 27x 9x 26x 8x 25x 17 24x 6x
35x 17x 34x 16x 33x 15x 32x 14x 31x 13x 30x 12x
Ext Pwr -48V
0x
18x
GE0 10/100/ 1000 Base-Tx
35x
10/100/100 0 Base-Tx
GE1
17x
Ground lug
attachment