Installation guide

Meeting Power Requirements
E4G Series Routers Hardware Installation Guide
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Meeting Power Requirements
This section describes power requirements and includes the following topics:
● Power Supply Requirements
● AC Power Cables
● Uninterruptible Power Supply Requirements
● DC Power Requirements
Power Supply Requirements
Follow these recommendations when you plan power supply connections for the E4G series routers:
● Place the equipment in an area that accommodates the power consumption and component heat
dissipation specifications.
● Be sure that your power supply meets the site DC power or AC power requirements of the network
equipment.
● When you connect power to installed equipment, do not make this connection through an extension
cord or power strip.
● If your router includes more than one power supply, connect each power supply to a different,
independent power source.
If a power source fails, it will affect only the router power supply to which it is connected. If all
router power supplies are connected to a single power source, the entire router is vulnerable to a
power source failure.
● In regions that are susceptible to electrical storms, Extreme networks recommends that you plug
your system into a surge suppressor.
For power specifications for the E4G series routers, see Appendix B.
WARNING!
Extreme Networks routers do not have a switch for turning power to the unit on and off. For systems using
an AC power supply, power to the router is disconnected by removing the wall plug from the electrical outlet.
For systems connected to DC power, turn off power to the chassis by de-energizing the circuit that feeds the power
supply. This is usually accomplished by turning off a circuit breaker. Disconnecting the DC power cable from the DC
power source must be done by a qualified, licensed electrician.
AC Power Cables
AC power input cords are not included with Extreme Networks routers and power supplies. You can
purchase AC power cords for use in the US and Canada from Extreme Networks or from your local
supplier.
Power supply cords for use outside of the United States and Canada are typically provided separately
by third-party distribution centers. Make sure that the power cord you use is certified for the country of
end use and suitable for the device.
The power cord must meet the requirements listed in “Power Cord Requirements for AC Power
Supplies” on page 125.