Eaton PV240 User Manual

Eaton Corporation Page 53 Ver 1.1C) Use a multi-meter to measure the AC voltage from the combiner box forAC utility. It is important to confirm the AC voltage that being used ismatching with the correct configuration of utility configuration dip switchused.D) Refer to the information from the table 310.16 in the National ElectricalCode (NEC) in order to select the proper size of AC cables for thePosition 1 pole / Position 2 pole / Position 3 pole.The following table is shown the information of cables size and tighteningtorque that should be used in the position (1) pole / position (2) pole /position (3) pole in the AC terminal when a 208V grid system appliedwith the PV inverter:ModelTerminal blockPV240(PV238) PV250 PV260 PV270Terminal blocklabeled with (1),(2), (3)Admissibleconductor size10 AWG 8 AWG 6 AWG90 oC / 194 oF, CopperTorque 15.6 lbf-in (18 Kgf-cm) 33.1 lbf-in (38.1 Kgf-cm)Terminal blocklabeled with (G)Admissibleconductor size 10AWGTorque 15.6 lbf-in (18 Kgf-cm) 33.1 lbf-in (38.1 Kgf-cm)IMPORTANTThe selection for the AC cable size and required torques for thePosition 1 / Position 2 / Position 3 were referring with the table310.16 from the National Electrical Code (NEC).E)E) Connect the AC cables with PV inverter by inserting them through theconduits into wiring box as figure 7.2.2.2 shown:Figure 7.2.2.2: Insert the AC cables through conduit