User`s manual

3.3 Main Circuit Wiring
3-21
3
Wiring and Connection
 Wire Types
Use the following type of wire for main circuit.
The following table shows the wire sizes and allowable currents for three wires. Use
wires with specifications equal to or less than those shown in the table.
• 600 V grade heat-resistant polyvinyl chloride insulated wire (HIV)
Note: The values in the table are for reference only.
Cable Type
Allowable Conductor
Temperature °C
Symbol Name
IV 600 V polyvinyl chloride insulated wire 60
HIV
600 V grade heat-resistant polyvinyl chloride
insulated wire
75
AWG
Size
Nominal
Cross
Section
Diameter
(mm
2
)
Configuration
(Number of
Wires/mm
2
)
Conductive
Resistance
(Ω/km)
Allowable Current at
Surrounding Air Temperature
(A)
30°C 40°C 50°C
20 0.5 19/0.18 39.5 6.6 5.6 4.5
19 0.75 30/0.18 26.0 8.8 7.0 5.5
18 0.9 37/0.18 24.4 9.0 7.7 6.0
16 1.25 50/0.18 15.6 12.0 11.0 8.5
14 2.0 7/0.6 9.53 23 20 16
12 3.5 7/0.8 5.41 33 29 24
10 5.5 7/1.0 3.47 43 38 31
8 8.0 7/1.2 2.41 55 49 40
6 14.0 7/1.6 1.35 79 70 57
4 22.0 7/2.0 0.85 91 81 66