Fronius SYMO Series

25
EN-US
NOTE!
When connecting aluminum cables:
► Follow all national and international guidelines regarding the connection of aluminum
cables.
► Follow the instructions of the cable manufacturer, especially the note about whether an
annual check to ensure that the cables are firmly attached should be performed.
NOTE!
Form a min. 4 in. (100 mm) cable loop with all cables.
NOTE!
To ensure that the inverter operates without any problems:
► Make sure that the grid's neutral conductor is grounded. For insulated networks (with-
out grounding), this is not the case, and operation of the inverter is not possible.
► A neutral conductor is required for measurement purposes when operating the invert-
er. The neutral conductor must have a current carrying capacity of at least 1 A.
Permitted Cables AC cables with the following design can be connected to the AC terminals of the inverter:
- Copper (Cu) or aluminum (Al): round, solid
- Copper: round, stranded, up to conductor class 4
Cu / Al Cu
AC & DC = copper cables (Cu)
The following wire combinations can be used for wiring.
Select a sufficiently large cable cross-section based on the actual device output!
AWG
round
AWG
strand
ed
AWG
stranded/round
AWG
round/round
AWG
stranded/stranded
4
2)
6
2)
6/6
4)
6/12
2)
6/14
2)
6/16
3)
8
2)
8
1)
8/10
1)
8/12
1)
8/14
1)
8/12
2)
8/10
2)
8/12
1)
8/14
1)
8/16
3)
10
2)
10
1)
10/10
1)
10/12
1)
10/14
1)
10/10
1)
10/12
1)
10/14
1)
10/16
3)
12
2)
12
1)
12/10
1)
12/12
1)
12/14
1)
12/16
1)
12/10
1)
12/12
1)
12/14
1)
12/16
1)
14
2)
14
1)
14/10
1)
14/12
1)
14/14
1)
14/16
1)
14/10
1)
14/12
1)
14/14
1)
14/16
1)
16
3)
16
3)
16/14
1)
16/16
1)
16/10
3)
16/12
1)
16/14
1)
16/16
1)
AC & DC = aluminum cables (Al)
The following wire combinations can be used for wiring.
Select a sufficiently large cable cross-section based on the actual device output!
AWG
round
AWG
strand
ed
AWG
stranded/round
AWG
round/round
AWG
stranded/stranded
4
2)
6
2)
6
4)
6/12
2)
6/14
2)
6/16
5)
8
2)
8
2)
8/10
2)
8/12
2)
8/14
2)
8/12
2)
8/10
2)
8/12
2)
8/14
2)
8/16
5)