Connecting Power Cables; Connecting I/O Cables-Single-Input Configuration - Vertiv Liebert EXS Installer/User Manual

2.3 Connecting Power Cables

WARNING! Risk of electrical shock. Can cause equipment damage, injury and death. Before
beginning installation, verify that all external overcurrent protection devices are open (Off), and
that they are locked-out and tagged appropriately to prevent activation during the installation.
After the power cables are connected, the terminal block's protective cover must be reinstalled
to remove the electric shock hazard.
When connecting input and output cables, follow national and local wiring regulations, take the
environment into account, and refer to NFPA 70, Table 310-16. The recommended minimum cables and
overcurrent protection is listed in Table 2.1 below, and Table 2.2 below, are based upon an 86°F
(30°C) ambient temperature.
Table 2.1 Currents and Wire Size—UPS Rectifier Input
Maximum Current,
Amps
37
Table 2.2 AC Currents and Wire Size—UPS Bypass Input* and Output
Maximum Current,
Amps
28
* Bypass input for dual input configurations only.
Table 2.3 Ring-terminal Part Numbers
Manufacturer Part #
2.3.1 Connecting I/O Cables—Single-input Configuration
1. Prepare to connect the UPS power cables to the I/O terminal block on the UPS rear panel, see
Figure 2.4 on the next page:
• Remove the wiring access cover plate to gain access to the input and output terminal
blocks.
• Remove the conduit/cable entry area panel to punch holes for the conduit size needed,
and attach the conduits to the rear of the conduit plate
2 Installation and Commissioning
75°C THW
Recommended OPD, Copper Wire (phase)
Amp Trip Number of Cables per
Phase: 1
50 6 AWG
75°C THW
Recommended OPD, Copper Wire (phase)
Amp Trip Number of Cables per
Phase: 1
40 8 AWG
10 (5.26)
McMaster-Carr: 7113K462
Thomas & Betts: RC10-14
Tyco Electronics: 1577648-1
75°C THW 75°C THW
Copper Wire Copper Wire
(neutral) (Ground)
Number of Number of
Cables: 1 Cables: 1
6 AWG 10 AWG
75°C THW 75°C THW
Copper Wire Copper Wire
(neutral) (Ground)
Number of Number of
Cables: 1 Cables: 1
8 AWG 10 AWG
2
AWG (mm )
8 (8.36)
McMaster-Carr: 7113K444
Thomas & Betts: RDV717
Tyco Electronics: 132331-1
Recommended
Torque
3 nm (2.2 ft-lb)
Recommended
Torque
3 nm (2.2 ft-lb)
6 (13.3)
McMaster-Carr: 7113K366
Thomas & Betts: RE6-14
—
23