Extreme Networks Summit X150 Series Hardware Installation Manual page 216

Connecting the X250 or X450 DC Wiring Harness to the DC Source Voltage
A three-wire, 6-foot long DC wiring harness is included with the Summit family X250 or X450 DC-
powered switch.
The DC wiring harness must be properly connected to the DC source voltage at your facility by a
qualified electrician before you attach the connector on the wiring harness to the DC power supply
socket on the switch. The figure below shows the wiring harness and connector. For information about
the wire-to-pin connection, see
Connector.
Warning
The Summit DC-powered switch and rack must be connected to protective earth ground
before installing any switch components.
Wiring the DC input power harness to your facilities DC source voltage must be performed by
a qualified, licensed electrician. After the wiring harness is connected to a permanent DC
voltage source by a qualified, licensed electrician, you can remove, replace and maintain a
Summit DC-powered switch without further electrician assistance. However, always be sure
that the DC circuit is de-energized before connecting or disconnecting the DC power
connections at the rear of the switch.
Caution
The DC wiring harness must be properly connected to a DC main circuit breaker rated no
greater than 20 A.
Provide proper connection and strain relief on the DC wiring harness in accordance with all
local and national electrical codes.
Figure 187: Three-wire Cable Harness
Note
Each wire on the harness has been properly marked for proper attachment to the DC power
source. Leave these labels on each lead wire for future reference.
Grounding a Summit X440 DC-Powered Switch
Before you connect the power input cable to a Summit X440 DC-powered switch, you must ground the
chassis, following the instructions in this section.
Summit Family Hardware Installation Guide
Wire-to-Pin Connection Specifications Pinouts for the DB-9 Console
Installing Summit Family Switches
216