Extreme Networks Summit X150 Series Hardware Installation Manual page 349

Connecting the Ground Wire
To connect the ground wire to the Summit 850 W DC power supply:
1 Verify that the DC circuit is de-energized.
2 Identify the grounding point on the front panel of the power supply (see
Ground Wire on page 349).
3 Insert an M3.5 screw (provided) through the ring terminal and into the grounding point on the
power supply.
4 Tighten the screw to 12.6 inch-pounds.
5 Connect the other end of the wire to a known reliable earth ground point at your site.
Figure 336: Connecting the Ground Wire
1 = Grounding point
Connecting the DC Power Cables
1 Verify that the DC circuit is de-energized.
2 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an
appropriate ground point on the rack.
3 Slide the cover off the terminal block (see
page 350).
4 Connect the DC power input cables as follows:
a On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the
captive square washer.
b Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the
negative terminal (labeled –48V).
Summit Family Hardware Installation Guide
Replacing DC Power Supplies in Summit Family Switches
2 = Ground wire
Figure 337: Connecting the DC Power Cables (Part 1)
Figure 336: Connecting the
on
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