Figure 162. Removing the safety ground wire
1. #6-32 nut 2. spring washer
3. grounding post 4. safety ground wire
Assembling DC input power wires
Prerequisites
NOTE:
For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform all
connections to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself.
All electrical wiring must comply with applicable local or national codes and practices. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow all safety instructions that came with the
product.
Steps
1. Strip the insulation from the ends of the DC power wires, exposing approximately 13 mm (0.5 inches) of copper wire.
NOTE:
Reversing polarity when connecting DC power wires can permanently damage the power supply or the
system.
2. Insert the copper ends into the mating connectors and tighten the captive screws at the top of the mating connector using a Phillips
number 2 screwdriver.
NOTE:
To protect the power supply from electrostatic discharge, the captive screws must be covered with the
rubber cap before inserting the mating connector into the power supply.
3. Rotate the rubber cap clockwise to fix it over the captive screws.
4. Insert the mating connector into the power supply.
198
Installing and removing system components
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