Juniper EX2300 Series Hardware Manual page 142

Special Instructions to Follow Before Connecting Earth Ground to an EX Series Switch | 139
Connecting Earth Ground to an EX Series Switch | 140
To ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements,
you must connect an EX Series switch to earth ground before you connect power to the switch. You
must use the protective earthing terminal on the switch chassis to connect the switch to earth ground
(see Figure 75 on page 141).
You must install the EX Series switch in a restricted–access location and ensure that the chassis is
always properly grounded. EX Series switches have a two–hole protective grounding terminal provided
on the chassis. See Table 37 on page 134
switches. We recommend that you use the protective grounding terminal as the preferred method for
grounding the chassis regardless of the power supply configuration. However, if additional grounding
methods are available, you can also use those methods. For example, you can use the grounding wire in
the power cord of an AC power supply or use the grounding terminal or lug on a DC power supply. This
system was tested to meet or exceed all applicable EMC regulatory requirements with the two-hole
protective grounding terminal connected correctly.
Ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable you
supply. Using a grounding cable with an incorrectly attached lug can damage the switch.
Parts and Tools Required for Connecting an EX Series Switch to Earth Ground
Before you begin connecting an EX Series switch to earth ground, ensure you have the parts and tools
required for your switch.
Table 37 on page 134 lists the earthing terminal location, grounding cable and lug specifications, and
parts needed for connecting an EX Series switch to earth ground.
for the location of the earthing terminals on various EX Series
133