Chapter 7: Installing Summit External Power Supplies
Summit Family Switches Hardware Installation Guide
302
CAUTION
Be sure that proper ESD controls are in use before switch maintenance is performed. This includes but is
not limited to wrist straps that are grounded to the switch chassis and earth grounds.
WARNING!
Extreme Networks AC power supplies do not have switches for turning the unit on and off. Remove the
wall plug from the electrical outlet to disconnect the power to an Extreme Networks AC power supply. Make sure
that this connection is easily accessible.
When the power supply is outside the chassis (not installed), do not plug the power supply into an electrical outlet.
Plugging an uninstalled AC power supply into an electrical outlet exposes you to a hazardous energy and is a
potential fire hazard.
WARNING!
Always be sure that the DC circuit is de-energized before connecting or disconnecting the DC wiring
harness at the DC power socket on the rear of the EPS-150DC unit, and before connecting or disconnecting the
redundant power cord between the switch and the EPS-150DC unit.
Pre-installation Requirements
You need the following tools and equipment to install an external power supply:
● # 1 Phillips screwdriver
● Rack mount screws suitable for your organization’s equipment rack
● Screwdriver suitable for use with your rack-mount screws
● AC power cord
An AC power cord is not included with the external power supply. You must obtain a power supply
cord that meets the requirements listed under
“Power Cord Requirements for AC-Powered Switches and
AC Power Supplies” on page 500
.
NOTE
When you connect an external power supply, consider all of the equipment that is connected to the
power supply circuit to ensure that the circuit is not overloaded. Use proper overcurrent protection, such as a
circuit breaker, to prevent overcurrent conditions.
The switch and each redundant power supply source should be plugged into separate branch circuits to
provide redundancy.
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