Earth bonding the front and rear doors to the rack frame

You might need to earth (ground) bond the front and rear doors to the frame.

About this task

Before you begin, ensure that you have the following items.

8 AWG copper wire with either solid green or green-yellow insulation
Wire with approximately 0.5 inches (1.25 cm) of insulation that is stripped from each end of the wire.
A ring-type connector that is secured to each end of the wire, according to the instructions that come with the connectors.
M5 bolt and external star washers
M6 external star washers

Note: You must use a 6-point (pt) socket with an extension bar to remove the bolts from the top cover. Other tools might cause the bolt heads to become rounded and difficult to remove.

Procedure

To earth (ground) bond the rack front and rear doors to the rack frame, complete the following steps.

On the rack door, locate the earth (ground) connection point.
The following figure shows a ground connection point on the door.
Figure 1. Ground point on the door
Using an 8 mm 6-point socket, remove an M6 bolt on the rack. Use the connection point screw that is closest to the door hinge.

Note: The ground points are at each corner of the rack. The ground point for the acoustic door is near the upper hinge side.
Place one ring terminal and then one external star washer on the bolt.
The following figure shows the order in which the screw, ring terminal, and external star washer are installed.
Figure 2. Ring terminal and external star washer
Use the external star washer and m5 bolt to secure the wire to the door ground point.
Place the other wire connector ring on the screw and add the M6 external star washer, as shown in Figure 2.
Use a hex socket to tighten the screw into the connection point on the rack frame.
Repeat steps 1 - 6 to earth (ground) bond the other door.