Circuit Breaker Input Ratings - Eaton 9PXM8S4K User Manual

Circuit Breaker Input Ratings

3 3 . . 2 2 C C i i r r c c u u i i t t B B r r e e a a k k e e r r I I n n p p u u t t R R a a t t i i n n g g s s
Table 1. Recommended Breaker Sizes
NOTE 1
NOTE 2
NOTE 3
See Table 2
Table 2. Recommended Wire Sizes
Input Breaker Size
• Table 2
minimum recommended circuit breaker sizes for each model and voltage application are listed on the
wiring diagrams.
• Conductor sizes shall be no smaller than the 75°C wire size based on the ampacities given in Table 310.15
(B)(16) of the National Electrical Code® (NEC®), ANSI/NFPA 70-2017, and article 220. All circuit
conductors, including the 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.
16 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 10
UPS Capacity
4kVA
8kVA
12kVA
16kVA
20kVA
If you are installing an optional super charger module in the UPS, then it is the same as a
power module with the proper input circuit breaker sizes and ratings.
To accommodate the feature of easy system expandability, it is recommended that
initial installation of the Eaton 9PXM UPS contains wiring to support the maximum
capacity of the UPS cabinet of 20kVA for 12-slot and 16-kVA for 8-slot cabinets.
The 9PXM is limited to an input current of 125A. In the event an additional charging
module has been employed in conjunction with the maximum allotted number of power
modules, no additional input ampacity will be required.
for recommended conductor sizes to wire the input circuit breakers.
25A
50A
80A
100A
125A
lists the mm2 and AWG wire size for each circuit breaker size shown on the wiring diagrams. The
Input Circuit breaker Rating
25A
50A
80A
100A
125A
75° Copper Wire Size
5.3 mm2 (10 AWG)
8.4 mm2 (8 AWG)
21.2 mm2 (4 AWG)
33.6 mm2 (2 AWG)
42.1 mm2 (1 AWG)
IMPORTANT
75°C Copper Wire Size
5.3 mm2 (10 AWG)
8.4 mm2 (8 AWG)
21.2 mm2 (4 AWG)
33.6 mm2 (2 AWG)
42.1 mm2 (1 AWG)
Conductor Screw Tourqe
4.0 Nm (35 lb in)
4.5 Nm (40 lb in)
5.1 Nm (45 lb in)
6.6 Nm (50 lb in)
6.6 Nm (50 lb in)