3-20
3.3 Inverter Wiring
3.3.1 Wire Gauges and Tightening Torque
To comply with UL standards, use UL approved copper wires (rated 75° C) and round crimp terminals
(UL Listed products) as shown in table below when connecting to the main circuit terminals. Teco
recommends using crimp terminals manufactured by NICHIFU Terminal Industry Co., Ltd and the
terminal crimping tool recommended by the manufacturer for crimping terminals and the insulating
sleeve.
Table 3.3.1.1 Wire gauges and tightening torque terminal screw size
Wire size
mm
2
(AWG)
Terminal
Screw
size
Model of round
crimp terminal
Tightening torque
kgf.cm (in.lbs)
Model of
insulating
sleeve
Model of
crimp tool
0.75 (18)
M3.5 R1.25-3.5 8.2 to 10 (7.1 to 8.7) TIC 1.25 NH 1
M4 R1.25-4 12.2 to 14 (10.4 to 12.1) TIC 1.25 NH 1
1.25 (16)
M3.5 R1.25-3.5 8.2 to 10 (7.1 to 8.7) TIC 1.25 NH 1
M4 R1.25-4 12.2 to 14 (10.4 to 12.1) TIC 1.25 NH 1
2 (14)
M3.5 R2-3.5 8.2 to 10 (7.1 to 8.7) TIC 2 NH 1 / 9
M4 R2-4 12.2 to 14 (10.4 to 12.1) TIC 2 NH 1 / 9
M5 R2-5 22.1 to 24 (17.7 to 20.8) TIC 2 NH 1 / 9
M6 R2-6 25.5 to 30.0 (22.1 to 26.0) TIC 2 NH 1 / 9
3.5/5.5 (12/10)
M4 R5.5-4 12.2 to 14 (10.4 to 12.1) TIC 3.5/5.5 NH 1 / 9
M5 R5.5-5 20.4 to 24 (17.7 to 20.8) TIC 3.5/5.5 NH 1 / 9
M6 R5.5-6 25.5 to 30.0 (22.1 to 26.0) TIC 3.5/5.5 NH 1 / 9
M8 R5.5-8 61.2 to 66.0 (53.0 to 57.2) TIC 3.5/5.5 NH 1 / 9
8 (8)
M4 R8-4 12.2 to 14 (10.4 to 12.1) TIC 8 NOP 60
M5 R8-5 20.4 to 24 (17.7 to 20.8) TIC 8 NOP 60
M6 R8-6 25.5 to 30.0 (22.1 to 26.0) TIC 8 NOP 60
M8 R8-8 61.2 to 66.0 (53.0 to 57.2) TIC 8 NOP 60
14 (6)
M4 R14-4 12.2 to 14 (10.4 to 12.1) TIC 14 NH 1 / 9
M5 R14-5 20.4 to 24 (17.7 to 20.8) TIC 14 NH 1 / 9
M6 R14-6 25.5 to 30.0 (22.1 to 26.0) TIC 14 NH 1 / 9
M8 R14-8 61.2 to 66.0 (53.0 to 57.2) TIC 14 NH 1 / 9
22 (4)
M6 R22-6 25.5 to 30.0 (22.1 to 26.0) TIC 22 NOP 60/ 150H
M8 R22-8 61.2 to 66.0 (53.0 to 57.2) TIC 22 NOP 60/ 150H
30/38 (3 / 2)
M6 R38-6 25.5 to 30.0 (22.1 to 26.0) TIC 38 NOP 60/ 150H
M8 R38-8 61.2 to 66.0 (53.0 to 57.2) TIC 38 NOP 60/ 150H
50/ 60 (1/ 1/ 0)
M8 R60-8 61.2 to 66.0 (53.0 to 57.2) TIC 60 NOP 60/ 150H
M10 R60-10 102 to 120 (88.5 to 104) TIC 60 NOP 150H
70 (2/0)
M8 R70-8 61.2 to 66.0 (53.0 to 57.2) TIC 60 NOP 150H
M10 R70-10 102 to 120 (88.5 to 104) TIC 60 NOP 150H
80 (3/0)
M10 R80-10 102 to 120 (88.5 to 104) TIC 80 NOP 150H
M16 R80-16 255 to 280 (221 to 243) TIC 80 NOP 150H
100 (4/0)
M10 R100-10 102 to 120 (88.5 to 104) TIC 100 NOP 150H
M12 R100-12 143 to 157 (124 to 136) TIC 100 NOP 150H
M16 R80-16 255 to 280 (221 to 243) TIC 80 NOP 150H
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