Installation guidelines
3-29
User Guide Rel 1.0 Standard May 1999
Procedure 3-9 (continued)
Connecting the earth ground to the cabinet
Step Action
5
Connect the earth ground wires (2 AWG solid bare tinned copper) from the
ground ring to the ground bar (see Figure 3-5 and Figure 3-20).
Note:
The ground-to-earth resistance must be less than or equal to
25 Ohms.
6
Reinstall the front base cover of the SPC and termination compartment by
attaching it with the two 1/4 in. tamper-proof screws.
7
Install the bulb-seal gasket around the SPC and termination compartment
door as follows:
a.
Locate the bulb-seal gasket previously secured in the cabinet.
b.
Install each of the two ends of the bulb-seal gasket around the edge of
the front cover plate.
Note:
Start at the lower corners when you install the gasket.
c.
Join the two ends of the bulb-seal gasket together to form a continuous
seal.
Note:
At the edge of the cover plate at the butt joint.
8
Open the AC compartment door.
9
Install a 2 AWG solid tinned copper wire from the AC compartment ground
bar to the ground ring.
Note:
Add this bonding wire when the power pedestal ground is installed at
a distance greater than 5 ft away from the cabinet.
10
Continue the cabinet installation process (see Procedure 3-10, “Installing the
surge arrestor”).
—end—
To Next Page
Loading...
