Juniper Networks EX4200 - Manual (Page 168)

CAUTION: Using a grounding cable with an incorrectly attached lug can damage the
switch.
Follow the procedure that applies to your switch:
■ Connecting Earth Ground to an EX2200 or EX3200 Switch on page 142
■ Connecting Earth Ground to an EX4200 Switch on page 142
■ Connecting Earth Ground to an EX8208 Switch on page 144
■ Connecting Earth Ground to an EX8216 Switch on page 145
Connecting Earth Ground to an EX2200 or EX3200 Switch
The protective earthing terminal is located on the rear of the chassis in an EX2200
switch and in an EX3200 switch.
An AC-powered EX Series switch chassis gets additional grounding when you plug
the power supply in the switch into a grounded AC power outlet by using an AC
power cord appropriate for your geographical location. For EX2200 switches, see
AC Power Cord Specifications for EX2200 Switches. For EX3200 switches, see “AC
Power Cord Specifications for EX3200 and EX4200 Switches” on page 98.
Before you connect earth ground to the protective earthing terminal on an EX2200
or EX3200 switch, ensure that you have the following parts and tools available:
■ Grounding cable for your switch—The grounding cable must be minimum 14 AWG
(2 mm²), minimum 90°C wire, or as permitted by the local code.
■ Grounding lug for your grounding cable
■ Washers and 10-32x.25-in. screws to secure the grounding lug to the protective
earthing terminal
■ Phillips (+) screwdriver, number 2
To connect earth ground to an EX2200 or EX3200 switch:
1. Connect one end of the grounding cable to a proper earth ground, such as the
rack in which the switch is mounted.
2. Place the grounding lug attached to the grounding cable over the protective
earthing terminal. See Figure 52 on page 141.
3. Secure the grounding lug to the protective earthing terminal with screws.
4. Dress the grounding cable and ensure that it does not touch or block access to
other switch components and that it does not drape where people could trip
over it.
Connecting Earth Ground to an EX4200 Switch
The protective earthing terminal is located on the left side of the chassis in an EX4200
switch.
142 ■ Connecting Earth Ground to an EX2200 or EX3200 Switch
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches