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Summit Family Switches Hardware Installation Guide
125
Connecting the DC Wiring Harness to the DC Source Voltage
After the internal DC power supply is installed, it must be connected to a DC power source. A
three-wire, 6-foot long DC wiring harness is included with the Summit DC switch and internal DC
power supply. The DC wiring harness must be properly connected to the DC source voltage at your
facility by a qualified electrician before the connector on the wiring harness can be attached to the DC
power supply socket on the switch. Figure 95 shows the wiring harness and connector. For information
about the wire-to-pin connection, see Table 51 on page 265.
WARNING!
The Summit X450a-24tDC or Summit X450a-24xDC switch and rack must be connected to protective earth ground
before installing any switch components.
WARNING!
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.
CAUTION
Provide proper connection and strain relief on the DC wiring harness in accordance with all local and national
electrical codes.
Figure 95: 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.
EWUG005