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CABLING AND FUSES
Use cables with heat resistance of at least 158 °F (70 °C). The cables and the fuses must be dimensioned according to the
tables below.
The fuses function also as cable overload protection.
These instructions apply only to cases with one motor and one cable connection from the frequency converter to the
motor. In any other case, ask the factory for more information.
EMC category
Mains cable types
Motor cable types
Control cable types
Cable type
1
Power cable intended for fixed installation and the specific mains voltage. Shielded cable not
required.
(NKCABLES / MCMK or similar recommended)
2
Power cable equipped with concentric protection wire and intended for the specific mains
voltage.
(NKCABLES / MCMK or similar recommended).
3
Power cable equipped with compact low-impedance shield and intended for the specific mains
voltage.
(NKCABLES / MCCMK, SAB / ÖZCUY-J or similar recommended).
*360º earthing of both motor and FC connection required to meet the standard
4
Screened cable equipped with compact low-impedance shield (NKCABLES /Jamak, SAB /
ÖZCuY-O or similar).
Frame
Horsepower
MI2
.33-1HP
MI3
1.5HP
Frame
Horsepower
MI1
.33-.75HP
MI2
1-2HP
MI3
3HP
Table 9. Cable types required to meet standards.
Table 10. Cable type descriptions.
Table 11. Cable and fuse sizes for SmartVFD HVAC2, 115 V, 1~.
Fuse
Mains cable
[A]
Cu [AWG]
20
2*14+14
32
2*10+10
Table 12. Cable and fuse sizes for SmartVFD HVAC2, 208 - 240 V, 1~.
Fuse
Mains cable
[A]
Cu [AWG]
10
2*16+16
20
2*14+14
32
2*10+10
cat. C2
1
3
4
Description
Main
Motor cable
terminal
Cu [AWG]
[AWG]
3*16+16
16-12
3*16+16
16-12
Main
Motor cable
terminal
Cu [AWG]
[AWG]
3*16+16
16-12
3*16+16
16-12
3*16+16
16-10
9
SMARTVFD HVAC2
cat. C4
1
1
4
Terminal cable size (min/max)
Earth
Control
terminal
terminal
[AWG]
[AWG]
16-12
20-16
16-12
20-16
Terminal cable size (min/max)
Earth
Control
terminal
terminal
[AWG]
[AWG]
16-12
20-16
16-12
20-16
16-10
20-16
Relay
terminal
[AWG]
20-16
20-16
Relay
terminal
[AWG]
20-16
20-16
20-16
31-00109EF—01
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