Eaton 9PXM8S4K User Manual

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36 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 10Table 5. UPS Recommended Breaker SizesUPS Capacity Input Circuit breaker Rating 75°C Copper Wire Size4kVA 25A 5.3 mm2 (10 AWG)8kVA 50A 8.4 mm2 (8 AWG)12kVA 80A 21.2 mm2 (4 AWG)16kVA 100A 33.6 mm2 (2 AWG)20kVA 125A 42.1 mm2 (1 AWG)NOTE If a super charger is installed in an EBM, the circuit breaker for the AC input to EBMmust be a 25 A breaker with 5.3 mm2 (10 AWG) copper wire.NOTE To accommodate the feature of easy system expendability, it is recommended thatinitial installation of the Eaton 9PXM UPS contains wiring to support the maximumcapacity of the UPS cabinet : 20kVA for 12–slot cabinets and 16kVA for 8 slot chassis.See for recommended conductor sizes to wire the input circuit breakers.Table 6. UPS Recommended Wire SizesInput Breaker Size 75° Copper Wire Size Conductor Screw Tourqe25A 5.3 mm2 (10 AWG) 4.0 Nm (35 lb in)50A 8.4 mm2 (8 AWG) 4.5 Nm (40 lb in)80A 21.2 mm2 (4 AWG) 5.1 Nm (45 lb in)100A 33.6 mm2 (2 AWG) 6.6 Nm (50 lb in)125A 42.1 mm2 (1 AWG) 6.6 Nm (50 lb in)cIMPORTANTFOR U.S. INSTALLATIONS, READ THIS IMPORTANT NOTE• lists the mm2 and AWG wire size for each circuit breaker size shown on the wiring diagrams. Theminimum recommended circuit breaker sizes for each model and voltage application are listed on thewiring 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 circuitconductors, including the neutral conductor, must be the same size (ampacity) wire. Code may require alarger AWG size than shown in this table because of temperature, number of conductors in the conduit, orlong service runs. Follow local code requirements.UPS Input Current Ratings