Dell PowerEdge E31S Series Owner's Manual page 137

NOTE: Use alpha wire part number 3080 or equivalent (65/30 stranding)
Required wires
● One UL 10 AWG, 2 m maximum (stranded) black wire [–(48–60) V DC]
● One UL 10 AWG, 2 m maximum (stranded) red wire (V DC return)
● One UL 10 AWG, 2 m maximum green/yellow, green with a yellow stripe, stranded wire (safety ground)
Assembling and connecting the safety ground wire
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 end of the green or yellow wire, exposing approximately 4.5 mm (0.175 inch) of copper wire.
2. Using a hand-crimping tool (Tyco Electronics, 58433-3 or equivalent), crimp the ring-tongue terminal (Jeeson Terminals Inc.,
R5-4SA or equivalent) to the green or yellow wire (safety ground wire).
3. Connect the safety ground wire to the grounding post on the back of the system by using a #6-32 nut equipped with a
locking washer.
Figure 75. Assembling and connecting the safety ground wire
1. #6-32 nut
3. grounding post
2. spring washer
4. safety ground wire
Installing and removing system components 137