CN 3960 Hardware Installation Guide
25
I
NSTALLATION
I
NSTALLING
S
UPPLEMENTAL
G
ROUND
2
Installing Supplemental Ground
The ground wire is provided as a supplemental ground.
The grounding screws are
supplied and are located on the far left of the rear of the chassis. See Figure 1-3:
Rear of CN 3960, on page 7 for the location of the grounding screws.
You are required to provide the grounding lug and grounding wire. The following
description indicates the required specifications:
•
#6 AWG (minimum) wire
•
2 hole lug @ 5/8” centers and with hole size for #10 or 1/4” screw
The following procedure explains how to connect the CN 3960 to supplemental ground:
1. Using a Phillips screwdriver and the two screws (supplied), connect a copper
conductor ground wire to the ground connectors on the far left of the rear of the
chassis. Figure 2-1 shows a grounding lug attached to the chassis with the supplied
screws.
Figure 2-1:
Installed grounding lug
2. Connect the other end of the grounding wire to supplemental ground in accordance
with local and national regulations and safety guidelines, and the grounding
procedures used by your company.
3. Using a voltmeter, verify that the DC resistance between the chassis and the
supplemental ground source is less than 25 milliohms.
You have grounded the CN 3960. You are now ready to proceed with installing power to
the CN 3960 using one of the following procedures:
•
For AC devices, see the
Installing an AC Power Supply section on page 27.
•
For DC devices, see the
Installing a DC Power Supply section on page 29.
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