SMA SUNNY BOY 3.0-US Instructions D'installation page 35

SMA Solar Technology America LLC
• If two equipment grounding conductors are
to be connected to one equipment
grounding terminal, guide both equipment
grounding conductors between the washer
and clamping bracket and tighten the screw
with a Torx screwdriver (TX 25) (torque:
6 Nm ± 0.3 Nm (53.10 in-lb ± 2.65 in-lb)).
Here, every equipment grounding
conductor must have contact with an inner
edge of the clamping bracket.
7. Plug the connecting terminal plate for the DC connection into the DC-in slot in the inverter.
While doing so, only touch the connecting terminal plate on the black enclosure.
8.
Danger to life due to electric arc
The connecting terminal plate must be fastened to the slot with two screws. If the connecting
terminal plate is not correctly mounted and comes out of the slot, an electric arc can form. An
electric arc can cause life-threatening burns and can cause fire.
• Tighten the screws of the connecting
terminal plate using a flat-blade
screwdriver (blade width: 3.5 mm
(0.14 in)) (torque: 0.3 Nm (2.65 in-lb)).
• Ensure that the connecting terminal plate is securely in place and the screws are
tightened.
9. Strip off the conductor insulation by 18 mm (0.71 in).
10. In the case of fine stranded wire, provide each conductor with a bootlace ferrule.
11. Connection of conductors of finely stranded wire
To connect conductors made of finely stranded wire, each terminal must be opened.
• First insert the connector into the round terminal all the way to the lock. Then insert
a flat-blade screwdriver (blade: 3.5 mm (0.14 in)) as far as it can go into the
square clamping contact above the round terminal. This opens the lock and the
connection to the connecting terminal plate can occur. After the connection has
been made, the flat-blade screwdriver must be pulled out of the square clamping
contact.
Installation Manual
6 Electrical Connection
SB30-77-1SP-US-40-IA-xx-13 35