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64
Wires & Cables
Copper conductor
cross section
2
mm
Reduction Factor
Number of
simultaneous
loaded
conductors on
each tray
Installation
Method
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
35
48
64
84
118
158
212
262
330
420
499
580
670
30
41
54
71
100
134
180
223
281
357
424
493
570
28
38
51
66
93
125
167
207
261
332
394
458
529
26
36
48
63
89
119
159
197
248
315
374
435
503
33
46
61
80
112
150
201
249
314
399
474
551
637
28
39
52
68
96
128
172
212
267
340
404
470
543
25
35
46
60
85
114
153
189
238
302
359
418
482
24
33
44
57
80
107
144
178
224
286
339
394
456
23
32
42
55
78
104
140
173
218
277
329
383
442
22
31
41
54
76
101
136
168
211
269
319
371
429
22
30
40
53
74
100
134
165
208
265
314
365
422
22
30
40
52
73
98
131
162
205
260
309
360
415
21
29
39
51
72
96
129
160
201
256
304
354
409
1
1
2
0.85
3
0.79
4
0.75
1
0.95
2
0.81
3
0.72
4
0.68
5
0.66
6
0.64
7
0.63
8
0.62
9
0.61
fixed on a ceiling or under floor
Current Carrying capacity in A
on floor or wall
In conduit
in a void or
in a pipe
1
1
2
0.8
3
0.7
4
0.65
5
0.6
6
0.57
7
0.54
8
0.52
9
0.5
10
0.48
12
0.45
14
0.43
16
0.41
20
0.38
Current Carrying capacity in (A) Duct
29
39
52
66
92
120
160
196
248
309
426
457
23
31
42
53
74
96
128
157
198
247
341
366
20
27
36
46
64
84
112
137
174
216
298
320
19
25
34
43
60
78
104
127
161
201
277
297
17
23
31
40
55
72
96
118
149
185
256
274
Size
17
22
30
38
52
68
91
112
141
176
260
243
16
21
28
36
50
65
86
106
134
167
230
247
15
20
27
34
48
62
83
102
129
161
222
238
15
20
26
33
46
60
80
98
124
155
213
229
14
19
25
32
44
58
77
94
119
148
204
219
13
18
23
30
41
54
72
88
112
139
192
206
12
17
22
28
40
52
69
84
107
133
183
197
12
16
21
27
38
49
66
80
102
127
175
187
11
15
20
25
35
46
51
74
94
117
162
174
2
mm
1.5
2.5
4
6
10
16
25
35
50
70
95
120