SMA America, LLC
Electrical connection
Installation Guide
SBCBTLUS-IUS094510
23
6.4 Connecting PV modules
6.4.1 Inserting the string fuses
1. Open the Sunny Boy Combiner Box as described in section 8.1 ”Opening the Sunny Boy
Combiner Box” (page 27).
2. Insert fuses into the fuse holders.
3. Insert all fuse holders provided with the Sunny Boy
Combiner Box.
4. Close the Sunny Boy Combiner Box as described in section 8.2 ”Closing the Sunny Boy
Combiner Box” (page 28).
☑ The string fuses are inserted.
