Eaton 93PM IAC-T Series Installation And Operation Manual

16 Eaton 93PM Integrated Accessory Cabinet-Tie (50 kW and 100 kW IAC-T) Installation and Operation Manual P-164000371—Rev 05WARNINGAs a result of the connected loads high leakage current is possible. Connection to earth ground is required forsafety and proper product operation. Do not check IAC-T operation by any action that includes removal of theearth (ground) connection with loads attached.• Refer to national and local electrical codes for acceptable external wiring practices.• For external wiring, use 90°C rated copper wire with the ampacity based on 75°C copper stranded wire.Wire sizes listed in Table 3 through Table 11 are for copper wiring only. If wire is run in an ambienttemperature greater than 40°C, higher temperature wire and/or larger size wire may be necessary. Wiresizes are based on using the specified breakers.• The IAC-T AC output wiring to the critical load for 1+1, 2+1, or 3+1 parallel configurations should be sizedthe same as if wiring a 2+0, 3+0, or 4+0 parallel system respectively if a Maintenance Isolation Switch(MIS) is not installed in the IAC-T.• 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.• A neutral conductor is not used from the source or supplied to the load.• 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 phase, ground, and equipment ground conductors must be run in the sameconduit when there is a risk of induced currents.• Conduit is to be sized to accommodate one neutral conductor the same size as the phase conductor andone ground conductor. If two neutral conductors or an oversized neutral conductor are to be installed, sizethe conduit to accommodate the extra wire or size.• 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 requirements are to be provided by the customer.• 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 Integrated Accessory Cabinet-Tie (IAC-T) external power wiring recommendations, including the minimumAWG size of external wiring, see Table 3 through Table 11. Wire sizes listed are for copper wiring only.Table 3. External Power Wiring Recommendations for the Eaton 93PM 50 kW IAC-T and 93PM 100 kW IAC-T – 1+1, and 2+0 Parallel Configurations without MIS and MBPBasic Unit RatingUnits Rating 60 HzkW 50 50 100 100Input/Output Voltage Volts 480/480 480/480 480/480 480/480Parallel Configuration — 1+1 2+0 1+1 2+0AC Input from each UPSFull Load Current from each UPS(3) Phases, (1) Ground AMaximum Amps 60 60 120 120Minimum Conductor Size (Phase A, B, and C)Number per PhaseAWG or kcmil(each)4(1)4(1)2/0(1)2/0(1)Installation Plan and Unpacking