Nortel Networks Option 11C Mini manual Grounding multiple pieces of equipment in a rack/cabinet

Page 144 of 332 Chapter 11 – Installing the system ground

Procedure 8

UK grounding procedure for the Option 11C Mini chassis

1Connect a protective and functional ground wire from the grounding strip on the Krone Test Jack Frame to the ground at the building entry point.

Use a green/yellow wire no thinner than 10 mm2.

2In each chassis, connect a ground wire from the ground lug in the chassis to the ground connection at the Test Jack Frame.

Use a green/yellow wire no thinner than 10 mm2. Place a DO NOT DISCONNECT tag on the grounding wire.

3Measure the resistance of the ground between the Krone Test Jack Frame and the Main Chassis frame ground.

The resistance must not be more than 0.253/4 at 30 amperes.

—————————— End of Procedure ——————————

Grounding multiple pieces of equipment in a rack/cabinet

For multiple pieces of equipment installed in a rack/cabinet, make a separate ground connection from each piece of equipment to the NTBK80 grounding block. Consider each Main Chassis and Chassis Expander pair, however, as one ground. Jumper the Chassis Expander ground to the Main Chassis ground. See Figure 39.

If a piece of Data Communications Equipment installed in a rack/cabinet does not have a grounding lug, ground the rack to the NTBK80 grounding block. See Figure 39.

When you ground the rack to the grounding block, the equipment is grounded using the Single Point Grounding method, as shown in Figure 6 on page 52.

553-3021-209 Standard 3.00 April 2000