Comply with Local and National Electrical Codes: “To reduce risk of electric shock or fire, installation of
the equipment must comply with local and national electrical codes.”Statement 1074
Warning
Step 3 Prepare enough length power cable, the wire range 6AWG~8AWG. Size the power cables to the distance between the
power supply and the DC power grid. If you need to cut the cable, cut it at the end that connects to the DC power grid,
remove 0.75 inch (19 mm) of insulation from the cut ends, and attach them to the DC power system. Be sure to connect
the negative cables to negative lines and positive cables to positive lines.
For all your power connections, if you are using cables with two different colors, use one color cable for all
positive circuits and the other color for all negative circuits.
Note
Hazardous voltage or energy may be present on DC power terminals. Always replace cover when terminals
are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1075
Warning
Step 4 Remove the three screws that hold down the safety cover for the terminal box on the front of the DC power supply and
remove the cover (see the following figure)
The terminal box has four slots for four power terminals (ordered as negative [-], positive [+], positive [+],
and negative [-]). Each terminal has two nuts that you use to fasten a power cable to the terminal.
Note
Figure 51: Removing the Safety Cover for the Terminal Box on the 3-kW DC Power Supply
Remove screws from cover.1
Remove the safety cover.2
Step 5 Install four cables (two positive and two negative cables) in the four terminal slots as follows:
a. Remove 16mm insulation of the other end of the cables.
b. Unscrew the two nuts in each of the four terminal slots, take out the lug.
c. Attach and crimp each lug to the end of each power cable
d. Attach each cable lug to the two terminal posts in each slot, fasten with two nuts, and tighten to 40 in-lb (4.5 N·m).
Cisco MDS 9700 Series Switches Hardware Installation Guide
173
Installing, Removing, and Verifying Field Replaceable Units
Connecting a DC Power Supply Directly to DC Power Sources