SMA Solar Technology AG
Electrical Connection
Technical Description
SSMUS-TUS094511
39
7.2.1 PV modules: Connecting ground
The PV modules are grounded at the lower screw
terminals (A) in the Sunny Central String-Monitor.
1. Strip the cable by approx. 0.3 in. (8 mm).
2. Open the screw terminal with a screwdriver
counterclockwise.
3. Plug the copper inner conductor of the cable into
the screw terminal.
4. Tighten the screw terminal with a screwdriver clockwise. Required torques:
5. Connect all grounding cables of the modules as described above.
☑ The PV modules are grounded.
Wire size
Torque
6 - 4 AWG
45 in-lb (5 Nm)
8 AWG
40 in-lb (4.5 Nm)
10 AWG
35 in-lb (4 Nm)
A
0.3 in.
