Cisco VG224 - Analog Phone Gateway Quick Start Manual page 11
Voice gateway
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Also See for VG224 - Analog Phone Gateway:
- Software manual (66 pages) ,
- Hardware installation manual (75 pages) ,
- Manual (10 pages)
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Warning
Use copper conductors only. Statement 1025
You must connect the 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
• For NEC-compliant grounding, use size AWG 14 (2 mm
• For EN/IEC 60950-compliant grounding, use size AWG 18 (1 mm
terminal.
To connect the chassis to a reliable earth ground, perform the following steps:
Locate a suitable ground.
Step 1
Using a multimeter, measure the resistance between various possible ground locations, such as between the ground of
Tip
a junction box (outlet) and the ground of a power tap, between the ground of a junction box and a metal water pipe,
between the Cisco IAD chassis and the ground of a power tap, and between the Cisco IAD chassis and the ground of a
junction box. A good ground connection should read between 0.0 and 0.5 ohms.
Strip one end of the ground wire to the length required for the ground lug or terminal.
Step 2
• For the NEBS ground lug—approximately 0.75 in. (20 mm)
• For user-provided ring terminal—as required
Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3
Attach the ground lug or ring terminal to the chassis as shown in Figure 10 or Figure 11. For the ground lug, use the
Step 4
two screws with captive locking washers provided. For a ring terminal, use one of the screws provided. Use a number 2
Phillips screwdriver, and tighten the screws to a torque of 8 to 10 in-lb (0.9 to 1.1 N-m).
Connect the other end of the ground wire to a grounding point at your site.
Step 5
Figure 10
NEBS-Compliant Chassis Ground Connection Using Ground Lug
Ground lug
Figure 11
Chassis Ground Connection Using Ring Terminal
Ring terminal
attachment
2
) wire and the ground lug provided in the accessory kit.
2
) or larger wire and an appropriate user-supplied ring terminal.
VG 22 4- 24
FX S
VG 22 4- 24
FX S
2
) or larger wire and an appropriate user-supplied ring
11
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