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UPS ELECTRICAL INSTALLATION
Eaton 9170
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UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality
49
The following notes are referenced in the system wiring diagrams
(Figure 32 through Figure 34).
NOTE 1 The customer must provide input overcurrent protection. See NEC
Section 240-21 or local requirements. See Table 6 on page 40 for circuit breaker ratings to
size the protection device according to local code requirements.
NOTE 2
The customer must size the AC circuit conductors. All AC circuit
conductors, including the neutral conductor, must be the same size (ampacity), have the same
rating (75°C) copper wire, and be sized according to the input circuit breaker. See Table 7 on
page 41 for recommended wire sizes. The UPS input and output conductors must be run
through separate conduits.
NOTE 3
The customer must provide output overcurrent protection. See NEC
Section 240-21 or local requirements. See Table 16 and Table 17 on pages 98 and 101 for
maximum output overcurrent protection device ratings.
NOTE 4 See “Equipment Clearances” on page 9 for installation and service clearances
before installing the UPS. Use flexible conduit on the UPS or the external battery cabinet if
either must be moved.
NOTE 5 External UPS battery cabinets are optional. See “Battery Cabinet Installation” on
page 61 for installation instructions.
NOTE 6 UPS output circuits shall be installed in dedicated conduit systems and not shared
with other electrical circuits.