8
Determining Wire and Fuse Sizes
The maximum motor currents in your application determines the recommended wire size.
The following table gives the wire size in AWG. The “Power Lines” column applies to the
inverter input power, output wires to the motor, the earth ground connection, and any other
components shown in the “Basic System Description” on page 7. The “Signal Lines”
column applies to any wire connecting to the two green connectors just inside the front
cover panel.
Motor Output
Wiring
Applicable equipment
kW
HP
Inverter Model
Power
Lines
Signal Lines
Fuse (UL-rated,
class J, 600V ,
Maximum
allowable
current)
Type E
C.M.C.
0.4 1/2
WJ200-004MF
AWG12 /
3.3mm
2
50A
MMS-32H,
120 V, 40 A
0.75
1
WJ200-007MF
AWG10 /
5.3mm
2
18 to 28
AWG / 0.14
to 0.75 mm
2
shielded wire
(see Note 4)
50A
MMS-32H,
120 V, 40 A
Note 1:
Field wiring must be made by a UL-Listed and CSA-certified closed-loop terminal
connector sized for the wire gauge involved. Connector must be fixed by using
the crimping tool specified by the connector manufacturer.
Note 2:
Be sure to consider the capacity of the circuit breaker to be used.
Note 3:
Be sure to use a larger wire gauge if power line length exceeds 66ft. (20m).
Note 4:
Use 18 AWG / 0.75mm
2
wire for the alarm signal wire ([AL0], [AL1], [AL2]
terminals).
Note 5:
Type E Combination Motor Controller marking is to indicate that the unit shall be
connected with, LS Industrial System Co., Ltd, Type E Combination Motor
Controller MMS Series .
