Owners Manual

Required Wires
• One UL 4 AWG, 2 m maximum (stranded) black wire [–(48–60) V DC]
• One UL 4 AWG, 2 m maximum (stranded) red wire (V DC return)
• One UL 4 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.
1. Strip the insulation from the end of the green/yellow wire (safety ground wire), exposing approximately 4.5 mm (0.175 inch) of copper
wire.
2. Using a hand-crimping tool (Tyco Electronics 1490749-1, Upper Die 1490414-2, and Lower Die 1-1490413-6), crimp the ring-tongue
terminal (Amp/Tyco PN 33115-1) to the green/yellow wire.
3. Connect the safety ground wire to the grounding post on the back of the system using a #5/16 nut equipped with a locking washer.
The nut must be torqued to 16 in lbs (1.8 N-m) to ensure proper ground wire retention.
Figure 41. Assembling and Connecting the Safety Ground Wire
1.
grounding post 2. safety ground wire terminal
3. locking washer 4. #5/16 nut
Installing Enclosure Components 67