![](/images/new-backgrounds/1196320/19632063x1.webp)
Wiring Connections
8.0WIRING CONNECTIONS
! WARNING
Verify that all incoming high and low voltage power circuits are
All power connections must be completed by a licensed electrician experienced in wiring UPS equipment and in accordance with all applicable national and local electrical codes.
Improper wiring may cause damage to the UPS or injury to personnel.
! CAUTION
All shielded cables,
NOTE
Use appropriately sized wire as a grounding conductor. Solid metal conduit is not a suitable ground conductor for UPS systems and could negatively affect system performance.
8.1Specific Connections
Refer to the drawings in this manual and any other drawings provided by Liebert for this installation. Make all of the following connections:
1.AC power cables from input power source circuit breaker (RIB) to each UPS Module Input. Observe phase rotation.
2.AC power cables from bypass power source circuit breaker (BIB) to UPS system bypass input at System Control Cabinet (SCC). Observe phase rotation.
! CAUTION
If there are
See 6.0 - Configuring Your Neutral and Ground Connections for an explanation of proper grounding techniques.
3.AC power cables from each UPS module output to SCC or to switchgear for critical load bus. Observe phase rotation.
4.Each UPS module must have its output neutral connected to the SCC for parallel operation. A minimum of a
5.AC power cables from UPS System Control Cabinet (SCC) Output to critical load or maintenance bypass panelboard or switchgear. Observe phase rotation.
NOTE
If your installation includes a Maintenance Bypass Panelboard or switchgear, some or all power cables will be terminated in that equipment. Make sure all required wiring between the UPS system and this switchgear is completed per the submittal drawings. Observe phase rotation.
26