Extreme Networks e" series, Руководство по установке оборудования

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156 Extreme Networks Consolidated "e" and "i" Series Hardware Installation Guide
Alpine 3800 Series Chassis Installation
Grounding the Alpine 3802 Chassis
To ground the Alpine 3802 chassis in accordance with NEBS standards, gather the following materials:
• Two zinc-plated steel lockwashers
• Two zinc-plated steel nuts
• One Panduit-style, standard two-hole barrel, copper compression lug
• AWG, high-strand-count copper wire cable, appropriate for your chassis
— 8 AWG for the Alpine 3808
— 10 AWG for the Alpine 3804
— 14 AWG for the Alpine 3802
• Flathead screwdriver
To ground the chassis:
1 Strip 0.5 inch (1.2 cm) of insulation from the appropriate AWG, high-strand-count copper wire cable.
2 Insert the cable into the cable lug.
CAUTION
Be sure that no copper is visible between the lug and the cable insulation.
3 Using a 1 /
4
-inch or 5 /
16
-inch flathead screwdriver, tighten the cable retention screw, to 20 inch-pounds of
torque.
4 Attach the ground lug, lock washers, and nuts (in that order) to the grounding studs on the rear of
the chassis. Tighten the nuts to 125 inch-pounds of torque.
After the chassis is installed, install power supplies and connect power as described in Chapter 8. Then
install required modules as described in Chapter 9 and Chapter 10.
Grounding the Alpine 3804 or 3806 Chassis
To ground the Alpine 3804 or 3906 chassis, gather the following materials:
• Two 1/4-20 screws
• One copper, standard barrel 2-hole compression grounding lug, type LDC, equivalent to Panduit
part number LCD4-14B-L
• Appropriate grounding wire for your system, based on the available input current for the power
supply:
— For AC systems using a 20-Amp breaker per PSU (SSI AC), the chassis ground can be as small as
14 AWG.
— For DC systems using a 40-Amp breaker per PSU (SSI DC), the chassis ground can be as small as
10 AWG.
• Crimping tool
• Torque screwdriver