3 
VFD-B Series 
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 
3-9
3.5 Main Circuit Wiring   
 
1HP to 3HP (VFD007B23A, VFD007B43A, VFD007B21A, VFD015B21A, 
VFD015B23A, VFD015B43A, VFD015B21B, VFD015B23B, 
VFD022B23B, VFD022B43B) 
 
L1
/
T
S
/
/
U
V
W
/
/
/
T3
T2
T1
+2
/
B1
R
L2
L3
+1 B2
 
 
Control Terminal   
Torque: 4Kgf-cm (3 in-lbf) 
Wire: 12-24 AWG   
 
Power Terminal   
Torque: 18 kgf-cm (15.6 in-lbf) 
Wire Gauge: 10-18 AWG stranded wire, 12-18 AWG solid wire 
Wire Type:  Copper only, 75°
C