Table 4.7 - Current ratings and volt drops for sheathed multi-core p.v.c.-insulated cables
Cross sectional area
In conduit in thermal insulation
In conduit in thermal insulation
In conduit on wall
In conduit on wall
Clipped direct
Clipped direct
Volt drop
Volt drop
(mm˛)
(A)
(A)
(A)
(A)
(A)
(A)
(mV/A/m)
(mV/A/m)
-
2 core
3 or 4 core
2 core
3 or 4 core
2 core
3 or 4 core
2 core
3 or 4 core
1.0
11.0
10.0
13.0
11.5
15.0
13.5
44.0
38.0
1.5
14.0
13.0
16.5
15.0
19.5
17.5
29.0
25.0
2.5
18.5
17.5
23.0
20.0
27.0
24.0
18.0
15.0
4.0
25.0
23.0
30.0
27.0
36.0
32.0
11.0
9.5
6.0
32.0
29.0
38.0
34.0
46.0
41.0
7.3
6.4
10.0
43.0
39.0
52.0
46.0
63.0
57.0
4.4
3.8
16.0
57.0
52.0
69.0
62.0
85.0
76.0
2.8
2.4

Extracted from The Electricians Guide Fifth Edition
by John Whitfield

Published by EPA Press
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