1 Front of power distribution panel 6 (B) Return (-) power cable
2 (A) -48 V dc (-) bus bar 7 (B) -48 V dc (-) power cable
3 (A) -48 V dc (-) power cable 8 (B) Return (-) bus bar
4 (A) Return (-) bus bar 9 (B) -48 V dc (-) bus bar
5 (A) Return (-) power cable
f. If you want to install a power status alarm, connect the alarm cable to the terminal board on the
back cover of the dc power distribution panel.
Note: Ensure that you remove the oxidation on the copper bus bars.
g. Ensure that the power-source ground cable is routed correctly and connects the power-source
ground cable to the copper bar at the lower-back or upper-back center of the rack.
h. If the rack is on a raised floor, attach the -48 V dc power source cables to the rear of the rack with
cable-restraint straps.
Figure 16. Return bus bar
Racks and rack features 19