Torques And Cable Sizes; Negative Grounding; Positive Grounding - SMA SUNNY CENTRAL STRING-MONITOR US Technical Description

Technical Data
13.1 Torques and Cable sizes
Use 90 °C (194 °F), copper wire for all DC wiring connections to the screw terminals between
• PV-modules and Sunny Central String Monitor
• Sunny Central String-Monitor and Sunny Central
Use 90 °C (194 °F) copper wire for all DC wiring connections to the fuse holders.
13.1.1 Negative Grounding
PV module connections
Cables of the PV modules
DC+
DC–
Ground
Connection - Sunny Central
Cables to the Sunny Central
DC+
DC–
Ground
13.1.2 Positive grounding
PV module connections
Cables of the PV modules
DC+
DC–
Ground
78 SSMUS-TUS094511
Cable Size
Rigid wire: 10 - 6 AWG
Multistrand wire: 10 - 8 AWG
6 - 4 AWG
8 AWG
10 AWG
6 - 4 AWG
8 AWG
10 AWG
Cable Size
350 kcmil
350 kcmil
350 kcmil
Cable Size
6 - 4 AWG
8 AWG
10 AWG
Rigid wire: 10 - 6 AWG
Multistrand wire: 10 - 8 AWG
6 - 4 AWG
8 AWG
10 AWG
SMA Solar Technology AG
Torque
19.5 in-lb (2.2 Nm)
45 in-lb (5 Nm)
40 in-lb (4.5 Nm)
35 in-lb (4 Nm)
45 in-lb (5 Nm)
40 in-lb (4.5 Nm)
35 in-lb (4 Nm)
Torque
325 in-lb
325 in-lb
325 in-lb
Torque
45 in-lb (5 Nm)
40 in-lb (4.5 Nm)
35 in-lb (4 Nm)
19.5 in-lb (2.2 Nm)
45 in-lb (5 Nm)
40 in-lb (4.5 Nm)
35 in-lb (4 Nm)
Technical Description