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Electrical Connections—UPS
27
3.2.8 Safety Ground
The safety ground busbar is below the neutral input and output busbars as shown in Figure 13
below. The safety ground cable must be connected to the ground busbar and bonded to each cabinet in
the system. This ground busbar is then connected to the ground electrode conductor (GEC).
All cabinets and cable conduit should be grounded in accordance with local regulations.
!
WARNING
Risk of electrical shock and arc flash. Can cause property damage, injury anddeath.
Failure to follow proper grounding procedures can result in electric shock hazard to personnel
or the risk of fire, should a ground fault occur.
NOTE
Proper grounding significantly reduces problems caused by electromagnetic interference.
NOTE
The ground and neutral busbars are easily accessible when the right side panel is removed.
Cable connections should be made before a cabinet is attached to the right side of the Liebert
®
APM
™
or before the UPS is placed where another obstruction, such as a wall, is against the
Liebert APM’s the right side.