SMA SC 500HE-US Installation - Manual (Page 64)

8 Electrical Connection SMA America, LLC
64 SC500HEUS-IA-US_en-14 Installation Manual
3. Plug the copper inner conductor of the cable into
the screw terminal.
4. Tighten the screw terminal using a screwdriver.
The required torque is 315 in-lb.
5. Connect all ungrounded DC path cables of the PV
modules as described above.
Connection to busbars
1. Open the Sunny Central as described in section 10.1.
2. Position the cable lug or lugs on the busbar.
3. Insert the lock washers and screws into the holes.
4. Tighten the screw with a nut in a clockwise direction using a torque of 55 ft.-lbs.
5. Connect all grounding cables as described above.
6. The ungrounded DC path cables are connected.
A Busbar for the connection of the PV modules'
ungrounded DC path cables.
Position: Interface Cabinet, right wall, middle.