SMA AUTOMATIC SWITCH BOX L - Manual (Page 34)

Electrical Connection SMA Solar Technology AG
34 AS-BoxL-IEN084410 Installation Guide
5.8 Generator connection (optional)
Cable requirements
The cable type and laying method must be suitable for the application and use location.
5.8.1 Sizing the lead fuse
ATTENTION!
Cable overload due to incorrect design. Destruction of the cable.
• Select the required cable cross section according to the nominal power of the
generator.
• The design of the output fuse of the generator may affect the design of the cable to
the PV system.
• If the generator does not have an output fuse, implement the cable connection to the
Automatic Switch Box in a ground-fault proof and short-circuit proof manner. As an
alternative - especially for long cable distances - you can install an additional fuse
box close to the generator.
Object Description Value
A Cable cross-section Max. 16 mm
2
B Strip insulation 18 - 20 mm
Wire sleeves
When using fine-strand cables, also use wire sleeves.
This only applies for the cable connected to the "F6 Generator" fuse element.
Sizing the lead fuse
Size the lead fuse in accordance with the requirements of the generator. You can use a
lead fuse of 40 A at the most. Use type D02 lead fuses.
D02 fuse plugs with a nominal current of 35 A are included in the scope of delivery.
However, you must verify that they meet the requirements.