SMA SC 500HE-US Installation - Manual (Page 85)

SMA America, LLC 11 Technical Data
Installation Manual SC500HEUS-IA-US_en-14 85
11.2 Torques and Cable Sizes
Required torque values
Connect all cable using copper or aluminium conductors that are suitable for temperatures of
+194°F (+90°C) and in accordiance with National Electrical Code
®
ANSI/NFPA 70 and
Canadian Electrical Code respectively.
Connection method Cable size Torque
Cable fixing in screw terminal 4 AWG to 600 kcmil
(25 mm² to 304 mm²) 41.5 ft.-lbs. (56.5 Nm)
Cable lug, aluminum on copper
busbar 4 AWG to 800 kcmil
(25 mm² to 405 mm²) 27.5 ft.-lbs. (37 Nm)
Cable lug, copper on copper
busbar 4 AWG to 800 kcmil
(25 mm² to 405 mm²) 44.5 ft.-lbs. (60 Nm)