- Eaton UPS User's Guide

UPS ELECTRICAL INSTALLATION

Eaton 9170

UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality

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.