Dell C7008 Installing page 38

Step Task (continued)
Remove the outer nuts and washers from each of the remaining studs.
7
Connect the -48 VDC and Return cables from each PEM to the remote sources.
8
Verify that the remote source is in the OFF position.
a
Locate the appropriate studs on the PEM front panel.
b
• The two top studs (furthest from the GND) are the return (+48V DC) connection. The cable attached to these
studs is typically red.
• The two bottom studs (closest to GND) are the -48 V DC connection. The cable attached to these studs is
typically black.
3/4-inch spacing.
Apply a coat of anti-oxidant paste to the connector studs, if required.
c
Replace the washers and nuts on the studs.
d
Route the terminated cables out toward the rack rail.
e
Secure the nuts with a nut driver or torque wrench (not to exceed 4 ft/lbs).
f
Figure 8-3. Grounding
Ground
Connector
Step Task (continued)
Replace the safety cover and tighten the captive screw.
9
Note that the safety cover can be rotated to accommodate system configurations.
Turn the Over-Current Protector to the ON position
10
Turn the remote source (the circuit breaker panel) to the ON position.
11
38 | Installing DC Power Entry Modules
NOTE:
Cables must be terminated only with a UL-listed 2-hole lug to accommodate 1/4-inch studs with
Return (+48V)
Connectors
-48V Connectors
(Figure 8-1).