UPS Only Installation

W A R N I N G

Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and initial startup. Risk of electrical shock.

Use the following procedure to hardwire the UPS:

1.Verify that the electrical connections to the installation site have been properly installed.

2.A wall-mounted, user-supplied, readily-accessible disconnection device must be incorporated in the input wiring.

Compare the circuit breaker ratings and wire sizes to the ones in the following wiring table:

Table 1. Circuit Breaker Ratings

UPS Capacity

Input Circuit Breaker Rating

Minimum Wire Size*

 

8 kVA

60A

4 AWG (21.2 mm2)

10 kVA

80A

3 AWG (26.7 mm2)

12 kVA

100A

2 AWG (33.6 mm2)

15 kVA

100A

2 AWG (33.6 mm2)

*Use only 90°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.

NOTE To accommodate the feature of easy system expandability, it is recommended that initial installation of the Powerware 9155 UPS contain wiring to support the maximum capacity of the UPS cabinet.

3.Switch off utility power to the distribution point where the UPS will be connected. Be absolutely sure there is no power.

4.Determine your equipment’s grounding requirements according to your local electrical code.

5.Verify that the UPS battery circuit breaker is in the OFF position (see Figure 5).

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Powerware® 9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com