Eaton Power Xpert Solar 1500 User Manua

Appendix DPower Xpert Solar 1500/1670 kW Inverter MN141001EN—October 2014 www.eaton.com 71Appendix DTorque ValuesThe tables below list the torque for all of the electricalconnections by enclosure section. These tables may be usedto verifying that the electrical and mechanical connections.Table 20. DC Section Electrical Connection Torque ValuesTable 21. AC Section Electrical Connection Torque ValuesTable 22. Ground ConnectionsLocationDC CabinetComponentDesignatorComponentDescriptionCircuitNumber TorqueFuse Bus Non-Grounded InputCircuitsPV Positive (for negativegrounded PV systems)N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)Negative Bus Grounded Input Circuits PV Negative (for negativegrounded PV systems)N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)Ground Bus Equipment GroundCircuitsPV Equipment: EGC N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)5/16 inch UNC Fasteners: 12–15 lb.-ft (16–20 Nm)LocationAC CabinetComponentDesignatorComponentDescriptionCircuitNumber TorquePhasesA-B-CThroat via flex-bus Flex-Bus KitSee Appendix B156 = A157 = B158 = C1/2 inch UNC Fasteners: 50–60 lb.-ft (68–81 Nm)AC Ground AC EGC ■ AC-EquipmentGrounding Conductor(EGC)■ PV Grounding ElectrodeConductor (GEC) as perNEC 690.47 (C)N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)5/16 inch UNC Fasteners: 12–15 lb.-ft (16–20 Nm)LocationComponentDesignatorComponentDescriptionCircuitNumber TorqueDC Cabinet Equipment GroundCircuitsPV Equipment: EGC N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)5/16 inch UNC Fasteners: 12–15 lb.-ft (16–20 Nm)AC Cabinet AC EGC ■ AC-EquipmentGrounding Conductor(EGC)■ PV GroundingElectrode Conductor(GEC) as per NEC690.47 (C)N/A 1/2 inch UNC Fasteners: 45–50 lb.-ft (61–68 Nm)7/16 inch UNC Fasteners: 30–35 lb.-ft (40–47 Nm)3/8 inch UNC Fasteners: 17–22 lb.-ft (23–30 Nm)5/16 inch UNC Fasteners: 12–15 lb.-ft (16–20 Nm)