Juniper EX4300 Series User Manual

Connect Earth Ground to an EX Series Switch
IN THIS SECTION
Parts and Tools Required for Connecng an EX Series Switch to Earth Ground | 186
Special Instrucons to Follow Before Connecng Earth Ground to an EX Series Switch | 193
Connecng Earth Ground to an EX Series Switch | 195
To ensure proper operaon and to meet safety and electromagnec interference (EMI) requirements,
you must connect an EX Series switch to earth ground before you connect power to the switch. You
must use the protecve earthing terminal on the switch chassis to connect the switch to earth ground
(see Figure 66 on page 196).
You must install the EX Series switch in a restricted–access locaon and ensure that the chassis is
always properly grounded. EX Series switches have a two–hole protecve grounding terminal provided
on the chassis. See Table 70 on page 187 for the locaon of the earthing terminals on various EX Series
switches. Under all circumstances, use this grounding connecon to ground the chassis. For AC-
powered systems, you must also use the grounding wire in the AC power cord along with the two-hole
grounding lug connecon. This tested system meets or exceeds all applicable EMC regulatory
requirements with the two-hole protecve grounding terminal.
Ensure that a licensed electrician has aached an appropriate grounding lug to the grounding cable you
supply. Using a grounding cable with an incorrectly aached lug can damage the switch.
Parts and Tools Required for Connecng an EX Series Switch to Earth Ground
Before you begin connecng an EX Series switch to earth ground, ensure you have the parts and tools
required for your switch.
Table 70 on page 187 lists the earthing terminal locaon, grounding cable and lug specicaons, and
parts needed for connecng an EX Series switch to earth ground.
186

Juniper EX4300 Series Specifications

General

Product Series	EX4300 Series
Power Consumption	Varies by model and configuration
Virtual Chassis Technology	Up to 10 switches
Software	Junos OS
Ports	24-port and 48-port models
10GBASE SFP+ Ports	Up to 8 ports
40GBASE QSFP+ Ports	2
Uplink Ports	Up to 4 ports
Jumbo Frames	Up to 9216 bytes
Operating Temperature	0°C to 45°C
Relative Humidity	5% to 90% noncondensing
Input Voltage	100 to 240V AC
Power Supply	AC or DC
Power Supply Options	AC or DC
Stacking	Yes
Layer 2 Features	Includes VLAN, STP, RSTP, MSTP, LACP
Layer 3 Features	OSPF, BGP
Management	CLI, Web GUI, SNMP
Security Features	DHCP snooping
QoS	8 queues per port, DSCP
Storage Temperature	-40°C to 70°C