SMA ST6-US - Manual (Page 24)

Electrical connection SMA America, LLC
24 ST36-48US-IA-IUS112321 Installation Guide
7 Electrical connection
Refer to the table below for the appropriate wire sizes and torque values.
Terminal Wire Size Wire type Torque
DC Terminal Blocks (PV-
return or PV grounded
conductors)
6 ... 2 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
80 lbs in
(9 Nm)
14 ... 8 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
35 lbs in
(3.9 Nm)
DC Fuse Holder (PV-hot
or PV ungrounded
conductors)
16 ... 10 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
19 lbs in
(2.2 Nm)
AC Terminal Blocks 350 kcmil ... 3/0 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
200 lbs in
(22.6 Nm)
2/0 ... 1 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
100 lbs in
(11.4 Nm)
6 ... 2 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
80 lbs in
(9 Nm)
14 ... 8 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
35 lbs in
(3.9 Nm)
Primary protective
earthing terminal
2/0 ... 2 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
89 lbs in
(10 Nm)
Inverter protective
earthing terminal
6 ... 14 AWG 600 V minimum rated 194 °F
(90 °C); copper or copper clad
conductors only
27 lbs in
(3 Nm)
Cover Screws — — 53 lbs in
(6 Nm)