Wiring
3.4.1 Applicable Wire Sizes and Closed-loop Connectors
3-8
Table 3.3 Closed-loop Connector Sizes (JIS C 2805) (For 200 V/400 V Classes)
Wire Thickness mm
2
Terminal Screws Size
M3.5 1.25 to 3.5
0.5
M4 1.25 to 4
M3.5 1.25 to 3.5
0.75
M4 1.25 to 4
M3.5 1.25 to 3.5
1.25
M4 1.25 to 4
M3.5 2 to 3.5
M4 2to4
2
M5 2to5
M6 2to6
M8 2to8
M4 5.5 to 4
M5 5.5 to 5
3.5/5.5
M6 5.5 to 6
M8 5.5 to 8
M5 8to5
8
M6 8to6
M8 8to8
M6 14 to 6
14
M8 14 to 8
M6 22 to 6
22
M8 22 to 8
30/38 M8 38 to 8
M8 60 to 8
50/60
M10 60 to 10
80
80 to 10
100
M10
100 to 10
100 100 to 12
150
M12
150 to 12
200 200 to 12
M12
×
2 325 to 12
325
M16 325 to 16
Determine the wire size for the main circuit so that line voltage drop is within 2% of the rated voltage.
Line voltage drop is calculated as follows:
(If there is the possibility of excessive voltage drop, use a larger wire suitable to the required length.)
Line voltage drop
(V) = 3
x wire resistance (Ω/km) x wire length (m) x current (A) x 10
−3
3
IMPORTANT