SMA SUNNY BOY 3800TL-US Installation Manual page 43

SMA America, LLC
15. If there is another string for input A, connect it in the same way to the terminal blocks for input A.
16. Connect the first string for input B to the terminal
blocks for input B. Use a flat-blade screwdriver
(blade width: 5 mm) for this (torque: 15 in-lb.
(1.7 Nm)).
• Insert the cable DC+ into the screw terminal +
and tighten the terminal. Ensure the correct
polarity when doing so.
• Insert the cable DC − into the screw terminal −
and tighten the terminal. Ensure the correct
polarity when doing so.
17. If there is another string for input B, connect it in the same way to the terminal blocks for input B.
18. Ensure that all screw terminals are correctly connected and that the cables are securely
positioned in the screw terminals
19. Turn the rotary switch of the DC Disconnect to the Off position.
20. Push the DC Disconnect lid diagonally under the
upper edge of the enclosure and press the lid
down. The lid must be flush with the enclosure
edge.
21. Tighten the lid of the DC Disconnect using an Allen
key (AF 4) and the corresponding screw and
conical spring washer (torque : 44 in-lb. (5 Nm)).
Installation Manual
6 Electrical Connection
SB3-5TLUS22-IA-en-16 43