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6 Electrical ConnectionSMA Solar Technology AG <br />Installation Manual SBxx-1SP-US-41-IA-xx-12 33 <br />5. Guide the conductors from the conduit into the inverter. In the process, install the conductors in <br />the inverter such that they do not come into contact with communication cables, the cable of <br />the LED assembly or other live conductors. Lay the conductors as a loop if they are too long. <br />6. Connect the equipment grounding conductor of the utility grid to the equipment grounding <br />terminal: <br />• Strip the insulation of the equipment grounding <br />conductor by 18 mm (0.71 in). <br />• Insert the screw through the conical spring washer, the clamping bracket and the washer. <br />• Guide the equipment grounding conductor between the washer and clamping bracket <br />and tighten the screw (TX 25) (torque: 6 Nm ± 0.3 Nm (53.10 in-lb ± 2.65 in-lb)). <br />7. Plug the terminal block for the AC connection in the <br />AC-out slot in the inverter, and tighten it with a flat- <br />blade screwdriver (blade width: 4 mm (5/32 in)) <br />(torque: 0.3 Nm (2.65 in-lb)). <br />AC-ou t SPS <br />1 <br />L1 L2N <br />2 <br />8. Ensure that the terminal block is securely in place and the screws are tightened. <br />9. Strip off the conductor insulation of L1, L2 and, if applicable, N by 18 mm (0.71 in) each. <br />10. In the case of fine stranded wire, provide the conductors with a bootlace ferrule. <br />11. Connection of conductors of finely stranded wire <br />To connect conductors made of finely stranded wire, each terminal point must be opened. <br />• First insert the connector into the terminal point all the way to the lock (round <br />opening). Then insert a flat-blade screwdriver (blade: 4 mm (5/32 in)) as far as it can <br />go into the actuation shaft (rectangular opening). Hereby the lock opens and the <br />conductor can be placed into the terminal point as far as possible. After the <br />connection has been made, the flat-blade screwdriver must be pulled out of the <br />actuation shaft. <br />12. WARNING <br />Fire hazard due to faulty conductor connection <br />If the conductors are inserted into the actuation shafts (right-angled openings), a fire may <br />occur during inverter commissioning. <br />13. Connect the conductors to the terminal block for the AC connection: <br />EN <br />G <br />L <br />I <br />S <br />H <br />534 S Sycamore St <br />- 10110979707/01/22