Dell MD1420 Hardware Owner's Manual page 20

• Molex # 39422-0012 mating DC power connector
Required Tools
• Hand-crimping tool (Tyco Electronics, 58433-3 or equivalent).
• Wire-stripper pliers capable of removing insulation from size 10 AWG solid or stranded, insulated copper wire.
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 (stranded) green/yellow/green with a yellow stripe wire (safety ground)
Assembling and connecting the safety ground wire
NOTE: For equipment using –(48–60) V DC power supplies, 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.
NOTE: It is recommended that you use stranded copper wire type.
1. Strip the insulation from the end of the green or yellow wire (safety ground wire), exposing approximately 4.5 mm (0.175 inch) of
copper wire.
2. Using a hand-crimping tool, crimp the ring-tongue terminal to the green or yellow wire.
3. Connect the safety ground wire to the grounding post on the back of the system using a #6/32 nut equipped with a locking washer
and tighten it firmly to the grounding post.
Figure 17. Assembling and connecting the safety ground wire
a. #6/32 nut
b. spring washer
c. locking washer
d. safety ground wire terminal
e. grounding post
Wiring the power cables
NOTE: For equipment using –(48–60) V DC power supplies, 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
20 Installing enclosure components