SMA SUNNY BOY 7000-US - DC Input Grounding

Electrical Connection SMA America, LLC
48 SB50US-80US-IA-en-36 Installation Manual
Fuses
The DC disconnect for the inverter must have a minimum rating of 600 V DC and 36 A continuous.
The DC disconnect is supplied with 4 fuses (one fuse per string) designed for 15 A and 600 V DC.
The 4 fuses of the DC disconnect may be used for a maximum of 20 A and 600 V DC.
When dimensioning the fuses, observe the National Electrical Code
®
690.8 and 690.9.
6.6.2 DC Input Grounding
The Sunny Boy is configured ex works for plants with negative PV array grounding. Certain types of
PV modules may make it necessary to ground the negative pole rather than the positive pole.
Position of the GFDI Fuse and the Jumper for Negative Grounding
1. Insert the fuse in position (1).
2. Insert the jumper in position (2).
Position of the GFDI Fuse and the Jumper for Positive Grounding
1. Insert the fuse in position (1).
2. Insert the jumper in position (2).
2
1
2
1