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INPUT ISOLATION TRANSFORMER INSTALLATION
Table 3. UPS Terminal Block (TB1) Wiring
Wire Function
Input
Ground
AUX
Not Used
L1
Neutral
L2
Output
L1
Neutral
L2
Not Used
Ground
* Use only 75°C-rated copper wire. Minimum wire size is based on 120/208 full load ratings applied to NEC Code Table 310‐16. Code may require a larger
AWG size than shown in this table because of temperature, number of conductors in the conduit, or long service runs. Follow local requirements.
20
Eaton 9155 UPS (8–15 kVA) User's Guide
12. Wire the output of the input isolation transformer terminal block to the UPS input
terminal block (see Table 3 and Figure 11).
Terminal Position
TB1‐1
TB1‐2-1 and 2-2
TB1‐2A-1 and 2A-2
8 kVA
TB1‐3
10 kVA
TB1‐4
12 kVA
15 kVA
TB1‐5
TB1‐6
TB1‐7
TB1‐8
TB1‐8A-1 and 8A-2
TB1‐9
TB1
13. Replace the UPS wiring access cover and the input isolation transformer wiring
cover.
14. Continue to "Stabilizing the Cabinet" on page 43 to complete the UPS
installation.
15. On the input isolation transformer, punch one pilot hole in the conduit landing for
the input conduit using a Greenlee punch or similar device (see Figure 10 on
page 19).
16. Install the supplied edge grommet in the top of the input isolation transformer
wiring cover.
S
164201553 Rev G (www.eaton.com/powerquality)
Minimum Wire Size*
8 AWG
—
—
2
4 AWG (21.2 mm
)
2
3 AWG (26.7 mm
)
2
2 AWG (33.6 mm
)
2
2 AWG (33.6 mm
)
8 AWG
8 AWG
8 AWG
—
8 AWG
1
3
4
2 2A
Input
Figure 11. UPS Terminal Block
Conduit Connection
Tightening Torque
(Entry Size)
25 lb in
2" access hole for
(2.83 Nm)
1‐1/2" conduit
25 lb in
2" access hole for
(2.83 Nm)
1‐1/2" conduit
5
6
7
8
9
8A
Output
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