WARNING: The switch is installed in a restricted-access location. It has a
separate protective earthing terminal (sized for UNC 1/4-20 ground lugs)
provided on the chassis in addition to the grounding pin of the power supply
cord. This separate protective earthing terminal must be permanently
connected to earth.
CAUTION: Beforeswitchinstallationbegins, ensure thata licensed electrician
has attached an appropriate grounding lug to the grounding cable that you
supply. Using a grounding cable with an incorrectly attached lug can damage
the switch.
Each AC power supply weighs approximately 6.6 lb (2.99 kg) and consists of one AC
appliance inlet, an AC input switch, a fan, and LEDs to monitor the status of the power
supply. See Figure 22 on page 44.
Figure 22: AC Power Supply for an EX9208 Switch
Each power supply has its own fan and is cooled by its own internal cooling system.
EX9208 switches support 2520 W AC power supply. The AC power supply supports both
the low-voltage line (100–120 VAC) and the high-voltage line (200–240 VAC) AC power
configurations.
Each AC power supply has a single AC appliance inlet located on the power supply that
requires a dedicated AC power feed. We recommend that you use a customer site circuit
breaker rated for 16.0 A @ 100 VAC or 16.0 A @ 200 VAC circuit breaker minimum for
each AC power supply, or as required by local code. Doing so enables you to operate the
switch in any configuration without upgrading the power infrastructure.
AC Power Supply Configurations
The EX9208 switch supports either the low-line (100–120 V) AC power configuration or
the high-line (200–240 V) AC power configuration.
Copyright © 2017, Juniper Networks, Inc.44
EX9208 Switch Hardware Guide
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