SMA SUNNY BOY 3.8-US Instructions D'installation page 48

6 Electrical Connection
7. Connect the conductors to the fuses in accordance
with the labeling. To do so, insert each conductor
into the terminal point of the fuse and tighten the
screw using a cross-head screwdriver (PZ 2; torque:
2 Nm to 2.5 Nm (18 in-lb to 22 in-lb)).
8. Ensure that the terminal points are allocated to the correct conductors.
9. Ensure that the conductors are plugged completely into the terminal points up to their
insulation.
48 SBSxx-US-10-IA-xx-11
SMA Solar Technology America LLC
Installation Manual