Page 113.3.2 UPS WIRING CONNECTIONTo make the mains power and load connections,follow the instructions below:1. Install a magneto-thermal switch (63A for 6 & 10kVAversions, 125A for 15 and 20kVA versions) withintervention curve D upstream of the machine (4 polesfor three-phase versions, 2 poles for single-phaseversions).2. The connection terminals to use for the input and outputlines are located on the backpanel. Unscrew the 4screws located on the sides of the cover (one on eachside, see figure).3. Remove the backpanel cover (see figure to the side).Fig.3-3 Wiring connectionSINGLE - PHASE VERSION (9E6KI ONLY )4. (SINGLE-PHASE CONNECTION 9E6KI): use 3 cables with cross-section 6 mm2 (EARTH, N and L) for the input, and 3cables with cross-section 6 mm2 for the output (EARTH, N and L).5. Connect the wires to the relative terminals, following exactly the instructions given below:Input linea - Make sure that the magneto-thermal switch upstream is open.b - Connect the earth wire to screw A.c - Connect the neutral wire to terminal 2.d - Connect the live wire to terminal 1.Output linea - Connect the earth wire to screw B.b - Connect the neutral wire to terminal 3.c - Connect the live wire to terminal 4.R.E.P.O.a - The REPO connection (between terminal 5 and 6) is normally open. For more information please refer to the REPO sectionof this manualFig.3-4 6K terminal view6. Tighten the terminals well, close the backpanel cover and secure it with the screws taken out earlier.The suggested tighten force is 1.2~1.6Nm.