Eaton 93PM Sidecar Integrated Accessory Cabinet-Bypass (150 kW and 200 kW SIAC-B) Installation and Operation Manual P-164000387—Rev 08 25• For external wiring, use 75°C copper wire. Wire sizes listed in Table 2 and Table 3 are for copper wiringonly. If wire is run in an ambient temperature greater than 40°C, higher temperature wire and/or larger sizewire may be necessary. Wire sizes are based on using the specified breakers.• Recommended wire sizes are based on NFPA National Electrical Code® (NEC®)70 Table 310.15(B)(16) 75°C ampacity with 40°C ambient correction factors.• Three-wire SIAC-B models do not use a neutral. Four-wire SIAC-B models use a neutral for bypass inputand load output, but not for rectifier input.• The neutral conductor is sized the same as the phase conductor for balanced and resistive loads. Non-linear loads, up to the maximum of 1.5x the load current, require a larger neutral conductor and should besized in accordance with NFPA NEC 70 Article 310.15(B)(5).• Refer to NEC Article 250 and local codes for proper grounding practices.• Phase rotation must be clockwise starting with phase A (rotation A, B, C).• Per NEC Article 300-20(a), all three-phase conductors must be run in the same conduit. A ground wiremust be run in the same conduit as the phase conductors.• Conduit is to be sized to accommodate three phase conductors, one neutral conductor (four-wire modelsonly), and one ground conductor. If an oversized neutral conductor (four-wire models only) is to beinstalled, a larger conduit size is needed to accommodate the oversized neutral.• Refer to the appropriate Eaton 93PM UPS Installation and Operation manual, listed in paragraph1.7 For More Information, for UPS cabinet conduit and terminal specifications and locations.• Material and labor for external wiring recommendations are to be provided by the customer.• If installing an external maintenance bypass, all feeds to the UPS including the Rectifier Input Breaker (RIB)(if installed) must have a service disconnect independent of the maintenance bypass power path. Mostmaintenance bypass solutions provide UPS input feeds derived from but isolated from the maintenancebypass power path. If the maintenance bypass solution being installed does not provide such functionality,DO NOT use a single feeder breaker to supply both the UPS and the maintenance bypass.• The term line-up-and-match refers to accessory cabinets that are physically located adjacent to the UPS.The term standalone refers to accessory cabinets that are located separate from the UPS.For three-wire SIAC-B external power wiring recommendations, including the minimum AWG size of externalwiring, see Table 2 or Table 3. Wire sizes listed are for copper wiring only.Table 2. External Power Wiring Recommendations: Eaton 93PM 150 kW and 200 kW Three-Wire SIAC-B – Two andThree Breaker Maintenance BypassBasic Unit RatingUnits Rating 60 HzkW 150 200Input/Output Voltage Volts 480/480 480/480AC Input to Maintenance Bypass(3) Phases, (1) GroundAMaximum Amps 218 291Minimum Conductor Size (Phase A, B, and C)Number per PhaseAWG or kcmil(each)2/0(2)4/0(2)Minimum Conductor Size (Ground)Number per Phase — AWG or kcmil(each)4(1)3(1)AC Output to Critical LoadFull Load Current(3) Phases, (1) GroundCMaximum Amps 180 240Installation Plan and Unpacking
