Determining Wire And Fuse Sizes - Hitachi SJ200 Series Instruction Manual

2–18
Step-by-Step Basic Installation

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 component shown in the
"Signal Lines" column applies to any wire connecting to the two green 8-position
connectors just inside the front panel half-door.
Motor Output
(kW/HP)
kW HP
0.2 1/4
0.4 1/2
0.55 3/4
0.75 1
1.1 1 1/2
1.5 2
2.2 3
3.7 5
5.5 7 1/2
7.5 10
0.4 1/2
0.75 1
1.5 2
2.2 3
3.0 4
4.0 5
5.5 7 1/2
7.5 10
Note 1:
Note 2:
Note 3:
Note 4:
Inverter Model
SJ200-002NFEF/NFU
SJ200-004NFEF/NFU
SJ200-005NFEF
SJ200-007NFEF/NFU
SJ200-011NFEF
SJ200-015NFEF/NFU
SJ200-022NFEF/NFU
SJ200-037LFU
SJ200-055LFU
SJ200-075LFU
SJ200-004HFEF/HFU
SJ200-007HFEF/HFU
SJ200-015HFEF/HFU
SJ200-022HFEF/HFU
SJ200-030HFEF
SJ200-040HFEF/HFU
SJ200-055HFEF/HFU
SJ200-075HFEF/HFU
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.
Be sure to consider the capacity of the circuit breaker to be used.
Be sure to use a larger wire gauge if power line length exceeds 66 ft. (20m).
Use 18 AWG / 0.75 mm
terminals).
"Basic System Description" on page
Wiring
Power Lines Signal Lines
2
AWG16 / 1.3 mm
2
AWG14 / 2.1 mm
2
AWG12 / 3.3 mm
2
AWG10 / 5.3 mm
2
18 to 28 AWG /
AWG12 / 3.3 mm
0.14 to 0.75 mm
2
AWG10 / 5.3 mm
shielded wire
(see Note 4)
2
AWG8 / 8.4 mm
2
AWG16 / 1.3 mm
2
AWG14 / 2.1 mm
2
AWG12 / 3.3 mm
2
wire for the alarm signal wire ([AL0], [AL1], [AL2]
2–8. The
Applicable
equipment
Fuse (UL-rated,
class J, 600V)
10A
15A
20A (single ph.)
15A (three ph.)
30A (single ph.)
20A (three ph.)
30A
2
40A
50A
3A
6A
10A
15A
20A
25A