Cabling method
The UPS single switch, UPS no switch, and the UPS with four switches model supports bottom cable access.
Figure 4.3 Power Cables Wiring Route of 120 kVA
Item Description Item Description
1 BAT+ 3 PE
2 BAT- 4 Bottom cable access
WARNING! Before cables connection, make sure that all external and internal power switches of the UPS are
off, and post necessary warning signs to prevent inadvertent operation of the switches. Meanwhile, measure
the voltages between the UPS terminals and the voltages between the terminals and the earth.
See Figure 4.2 on the previous page to Figure 4.3 above, open the front door of the UPS, and remove the protective cover to
reveal the power cable connection terminals (see Figure 4.2 on the previous page). Connect the protective earth cable to the
PE input terminal in the cabinet.
WARNING! Risk of electric shock or fire. Can cause equipment damage, personnel injury or death. The earth
grounding cable and neutral line connection must comply with the national electrical code and all the
applicable local code.
4 Electrical Installation Proprietary and Confidential ©2023 Vertiv Group Corp. 39
Vertiv™ Liebert® APM2 30 to 120 kVA Modular UPS User Manual
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