Electrical Installation
12
Avaya
t
RS9 UPS (9–18 kVA, 9-Slot Models) Site Preparation, Installation and Operator’s Manual
S
164201543 Rev A
Input Current Ratings
Table 1 contains the required circuit breaker ratings for hardwired
installations.
Table 1. Required Input Circuit Breaker Sizes (200–240 Vac, 60 Hz)
UPS Capacity
Input Circuit
Breaker Rating
UPS with 1 Battery
Charger Module
UPS with 2 Battery
Charger Modules
9 kVA
60A
75A
100A
12 kVA
80A
100A
125A
15 kVA
100A
125A
125A
18 kVA
125A
125A
125A
NOTE
To accommodate the feature of easy system expandability, it is recommended that
initial installation of the Avaya RS9 UPS contain wiring to support a 18 kVA unit.
See Table 2 for recommended conductor size to wire the input circuit
breaker.
Table 2. Recommended Wire Sizes
Input Circuit Breaker Size
75
°
C Copper Wire Size
Conductor Screw Torque
60A
4 AWG (21.2 mm
2
)
35 in lb (4.0 Nm)
75A, 80A
3 AWG (26.7 mm
2
)
45 in lb (5.1 Nm)
100A
2 AWG (42.1 mm
2
)
55 in lb (6.2 Nm)
125A
1/0 AWG (53.5 mm
2
)
65 in lb (7.3 Nm)
FOR U.S. INSTALLATIONS, READ THIS IMPORTANT NOTE!
Conductor sizes shall be no smaller than the 75°C wire size based on the ampacities given in
Table 310–16 of the National Electrical Code, ANSI/NFPA 70-1999, and article 220. All circuit
conductors, including neutral conductor, must be the same size (ampacity) wire. 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 code requirements.
