Installation guide

Grounding the BlackDiamond 20808 Chassis
BlackDiamond 20808 Switch Hardware Installation Guide
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To attach the air baffles:
1 On the side of the chassis, locate the slots for the top and bottom locking tabs. Determine whether
the open side of the baffle will face the front or back of the chassis.
On the left side (as you face the rear of the chassis), the baffle must open toward the back of the
chassis. On the right side, the baffle must open toward the front of the chassis.
2 Position the baffle over the air intake grill and insert the back edge tabs into the slots at the edge of
the grill (Figure 22).
Figure 22: Installing an Air Baffle
3 Align the top and bottom locking tabs with the small slots above and below the air intake grill, and
push the tabs into the slots.
4 With the baffle against the side of the chassis, slide it toward the back edge of the baffle to engage
the locking tabs.
5 Secure the baffle to the chassis using the captive retaining screws.
6 Repeat steps 2 through 5 to attach the other baffle.
Grounding the BlackDiamond 20808 Chassis
Although grounding the BlackDiamond 20808 chassis is optional, it is recommended. The rear panel of
the chassis provides a grounding point with threaded holes for attaching a ground cable.
You need the following materials to ground the chassis:
● Two 10-24 screws
● One copper, standard barrel 2-hole compression grounding lug with 0.63-inch hole spacing, type
LDC, equivalent to Panduit part number LCD4-14A-L or Thomas & Betts part number: LCN4-14
● Appropriate copper grounding wire for your system, based on the available input current for the
power supply:
■ For AC systems using a 20A breaker per PSU, the chassis ground minimum size is 14 AWG.
■ For DC systems using a 60A breaker per PSU, the chassis ground minimum size is 4 AWG.
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