CAUTION: When stranded wiring is required, use approved wiring termination, such as closed-
loop or spade-type with upturned lugs. These terminations are the appropriate size for the wires
and must be double crimped, one on the conductor and one on the insulation.
CAUTION: When installing the unit, the ground connection must always be made first and
disconnected last to prevent an energy hazard.
CAUTION: Never defeat the ground conductor or operate the equipment in the absence of a
suitably installed ground conductor. Contact the appropriate electrical inspection authority or an
electrician if you are uncertain that suitable grounding is available.
Input Requirements• Supply voltage: –(48–60) V DC
• Current consumption: 75 A (maximum)
Kit Contents• Molex # 394260002 at PSU end
• Molex # 39422-0012 mating DC power connector
Required Tools• Hand-crimping tool (Tyco Electronics 1490749-1, Upper Die 1490414-2, Lower Die 1-1490413-6).
• Wire-stripper pliers capable of removing insulation from size 4 AWG solid or stranded, insulated
copper wire.
NOTE: Use alpha wire part number 3080 or equivalent (65/30 stranding).
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 WireWARNING: 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.
79