Communication Server Large System Installation and Commissioning

Page 86 of 456 Installing AC power
NN43021-310 Standard 02.01 December 2007
Procedure 5
Installing the UPS ground cabling
1 Make sure the safety ground/protective earth wire is connected on all
Large System columns.
2 Daisy-chain ground cables to each UPS (see Figure 32) using #6 AWG
wire.
3 Daisy-chain ground cables to each bypass switch (if equipped) using
#6 AWG wire.
4 Run a #6 AWG wire between the ground lug on the rear of the pedestal,
the bypass switch, and the UPS to a common frame ground point.
5 Run a #6 AWG wire between the common ground point and the ground
bus in the service panel.
End of Procedure
CAUTION
Damage to Equipment
Take care when connecting battery leads to the UPS.
A battery reversal can result in severe damage to the
UPS.