Eaton 9PXM8S4K User Manual

Also see for 9PXM: Manual User guide User guide

16 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 1033..22 CCiirrccuuiitt BBrreeaakkeerr IInnppuutt RRaattiinnggssTable 1. 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 1 If you are installing an optional super charger module in the UPS, then it is the same as apower module with the proper input circuit breaker sizes and ratings.NOTE 2 To accommodate the feature of easy system expandability, it is recommended thatinitial installation of the Eaton 9PXM UPS contains wiring to support the maximumcapacity of the UPS cabinet of 20kVA for 12-slot and 16-kVA for 8-slot cabinets.NOTE 3 The 9PXM is limited to an input current of 125A. In the event an additional chargingmodule has been employed in conjunction with the maximum allotted number of powermodules, no additional input ampacity will be required.See Table 2 for recommended conductor sizes to wire the input circuit breakers.Table 2. 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)cIMPORTANT• Table 2 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.Circuit Breaker Input Ratings