3. Push the power supply in until the latch snaps into place.
Caution
Do not slam the power supply into the switch.
4. Reconnect the ground wire as described in Connecting the Ground Wire to a 300 W DC Power
Supply on page 347.
Connecting the Ground Wire to a 300 W DC Power Supply
To connect the ground wire to the Summit 300 W DC power supply, follow these steps:
1. Verify that the DC circuit is de-energized.
2. Identify the grounding point on the front panel of the power supply.
See Figure 287.
Figure 287: Connecting the Ground Wire (Front-to-Back Model 10933 Shown)
1 = Grounding point
2 = Ground wire
3. Insert an M4 screw (provided) through the ring terminal on the ground and into the grounding point
on the power supply.
4. Tighten the screw to 15.9 in-lb (1.8 N-m).
5. Connect the other end of the wire to a known reliable earth ground point at your site.
6. Connect the switch to the DC power source. See the instructions in Connecting DC Power Cables to
a 300 W DC Power Supply on page 347.
Connecting DC Power Cables to a 300 W DC Power Supply
Your Summit 300 W DC power supply (part no. 10933 or 10944) can connect to both +24 V and -48 V
power sources. The connection instructions are diîš‚erent depending upon the power source voltage.
For connection instructions, refer to the appropriate topic:
• Connecting the DC Power Cables to a +24 V Source on page 348
• Connecting the DC Power Cables to a -48 V Source on page 350
Replacing DC Power Supplies
Connecting the Ground Wire to a 300 W DC Power
Supply
ExtremeSwitching Hardware Installation Guide 347
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