SMA SC 250U - Manual (Page 37)

SMA America, LLC 6 Electrical connection
Installation Guide DISU_SCUS-IA-IUS111711 37
Figure 17: Mounted screw terminal
1. Strip the cable by about 1
1
⁄
5
in. (30 mm).
2. Open the set screw of the terminal completely.
3. Plug the conductor of the cable into the screw terminal and tighten it with the specified torque
(see section 6.2 ”Cable requirements”, page 32).
Position Description
A Nut ‒ size: M 12
B Spring washer
C Washer
D Screw terminal
E Busbar
F Screw head ‒ size: M12
4.
Torque at pre-mounted screw terminals
The screw terminals are pre-mounted upon delivery.
If necessary, tighten the screw terminal to the busbar again using a torque wrench with a
torque of 27 ft‒lb. (37 Nm).