Permitted Cables - Fronius Symo Series Installation Instructions Manual

solar module are decisive factors in the protection of the solar module.
The maximum short circuit current I
The string fuse release current can be set to greater than 15 A if required. However, a re-
lease current of 20 A must not be exceeded.
If the inverter is being operated with an external string collection box, the DC connector kit
25 (item numbers 42,0201,4479 for DC+ and 42,0201,4480 for DC-) must be used. In this
case the solar modules are externally protected in the string collection box and the metal
bolts should be used in the inverter.
National regulations regarding fuse protection must be observed. The electrical engineer
carrying out the installation is responsible for the correct choice of string fuses.
Danger due to faulty fuses.
This can result in fire.
► Only replace faulty fuses with new ones of the same rating.
The inverter is delivered with metal bolts as standard.

Permitted Cables

AC cables with the following design can be connected to the AC terminals of the inverter:
Cu / Al
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
AWG
strand
round stranded/round
ed
2)
4
2) 4)
6 6/6
2) 1) 1)
8 8 8/10
36
CAUTION!
Option DC SPD
DC+ 2.1
DC+ 1.3
DC+ 1.2
Do not remove cover! Do not remove cover!
DC+ 1.1
Cu
- Copper (Cu) or aluminum (Al): round, solid
- Copper: round, stranded, up to conductor class 4
AWG
1) 1)
8/12 8/14
per terminal is 15 A.
SC
DC+ 2.3
DC+ 2.2
Each Terminal: I Each Terminal: I
AWG
round/round
2)
8/12
DC- 1.2
DC- 1.1
= 15 A = 15 A
max max
AWG
stranded/stranded
2) 2)
6/12 6/14
2) 1) 1)
8/10 8/12 8/14
3)
6/16
3)
8/16