UPS Model
Recommended External
Over-current Protection
Recommended Wire Size (Including Ground
Wire) (90°C Copper Wire)
Maximum Wire Size
Accepted by Terminal
Block
Terminal Tightening
Torque
GXT5-5000IRT5UXLN
40 A
10 mm
2
(8 AWG)
6 AWG 20 lb-in (2.26 Nm)
GXT5-5000IRT5UXLE
GXT5-6000IRT5UXLN
50 A
GXT5-6000IRT5UXLE
GXT5-8000IRT5UXLN
63 A 16 mm
2
(6 AWG)
GXT5-8000IRT5UXLE
GXT5-10KIRT5UXLN
GXT5-10KIRT5UXLE
GXT5-16KIRT9UXLN
1-phase: 140 A
3-phase: 50 A
1-phase: 35 mm
2
(1 AWG)
3-phase: 10 mm
2
(8 AWG) for L1, L2, L3, 1
AWG for N, G
53.5 mm
2
(1/0 AWG) 110 lb-in (12.4 Nm)
GXT5-16KIRT9UXLE
GXT5-20KIRT9UXLN
1-phase: 160 A
3-phase: 63 A
GXT5-20KIRT9UXLE
Table 3.3 Terminal-Block Electrical Specifications
To make the terminal-block connections:
1. Loosen the screws from the cable-entry/conduit-box cover, and pull the cables through the knockout leaving
some slack for connection.
NOTE: We recommend using the knockouts to install input and output wiring in separate conduit. You must use a
suitable cable gland or risk electric shock.
2. Referring to the appropriate terminal-block connection instructions, connect the cables to the corresponding
input/output terminals and use a torque wrench to turn the screw clockwise until tightened as specified in Table
3.3 above.
• Connecting to Terminal Blocks on 5 kVA and 6 kVA Model
• Connecting to Terminal Blocks on 8 kVA and 10 kVA Models
• Connecting to Terminal Blocks on 16 kVA and 20 kVA models
3. Re-install the cable-entry/conduit-box cover, and tighten the screws.
3.6.3 Connecting to Terminal Blocks on 5 kVA and 6 kVA Model
These models offer a single type of I/O connection, 1-in 1-out common source. Figure 3.6 on the next page, shows the terminal
block. Refer to the details in Terminal Block Connections on the previous page, when making the connections.
3 Installation Proprietary and Confidential ©2024 Vertiv Group Corp. 39
Vertiv™ Liebert® GXT5 UPS Installer/User Guide
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