Arista CCS-720XP Series, Quick Start Manual

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Note: Stranded copper wiring is required and should meet local and national installation
requirements. Wires and grounding lugs are not supplied.
1. Attach an ESD grounding strap.
2. Prepare the stranded copper wiring for the power supply to be used.
Table 6: Wiring, Lug, and
Tightening Torques for DC PSU provides wiring, lug, and tightening torque information for the
power supplies covered in this guide.
Table 6: Wiring, Lug, and Tightening Torques for DC PSU
Wire Size(1) Tightening Torque PSU
(AWG) (mm2)
Lug Type(1)
Nm in lbs.
PWR-721-DC-RED 10 - 12 6.0 - 4.0 Twin #10 studs
spaced for dual-hole
lug with 5/8" hole
spacing. 2.7 24
1. Unless otherwise noted, applies to -48V, Battery return, and Protective earth wires.
3. Strip the wires to the appropriate length for the lugs to be used.
4. Use agency-approved compression (pressure) lugs for wiring terminations.
5. Slip on heat-shrink tubing on the wire ends before assembling the lugs on to the wire.
6. Crimp the lugs with the proper tool, and ensure that the tubing extends over the barrel of the lugs
and the insulation on the wires ( Figure 9: Lugs Wiring Terminations ).
Figure 9: Lugs Wiring Terminations
1 Insulated wire 3 Lug (all three terminals) B 1/2"
2 Heat-shrink tubing A 1/4" C 5/8"
7. Shrink the tubing with a heat gun.
4.2.2.2 Connecting a DC Power Supply to Power Source
To connect a DC power supply to power source:
1. Prepare the stranded wiring ( Wire and Lug Preparation ).
2. Attach the appropriate lugs to the source DC wires.
3. Connect the DC-input wires to the appropriate terminals using the specified torque (
Table 6: Wiring,
Lug, and Tightening Torques for DC PSU ) in the following order.
Note: Remove terminal covers as needed.
a. Ground wire to the Protective Earth (PE ) terminal.
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