Table 4.8 - Current ratings of mineral insulated cables clipped direct
Cross-sectional area
Volt
p.v.c. sheath
2 x single or twin
p.v.c. sheath 3 core
p.v.c. sheath 3 x single or twin
Bare sheath 2 x single
Bare sheath 3 x single
(mm˛)
(A)
(A)
(A)
(A)
(A)
1.0
500v
18.5
16.5
16.5
22.0
21.0
1.5
500v
24.0
21.0
21.0
28.0
27.0
2.5
500v
31.0
28.0
28.0
38.0
36.0
4.0
500v
42.0
37.0
37.0
51.0
47.0
1.0
750v
20.0
17.5
17.5
24.0
24.0
1.5
750v
25.0
22.0
22.0
31.0
30.0
2.5
750v
34.0
30.0
30.0
42.0
41.0
4.0
750v
45.0
40.0
40.0
55.0
53.0
6.0
750v
57.0
51.0
51.0
70.0
67.0
10.0
750v
78.0
69.0
69.0
96.0
91.0
16.0
750v
104.0
92.0
92.0
127.0
119.0

Extracted from The Electricians Guide Fifth Edition
by John Whitfield

Published by EPA Press
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Click here for list of abbreviations