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By
far the largest and most important component of any earthing or
structural lightning protection system is the actual conductor.
Furse offer a
comprehensive range of copper and aluminium conductors in each of the
main world standard formats, ie flat tape, solid circular and stranded.
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Conductor colour chart
The
choice of a lightning protection conductor is usually governed by its
aesthetic impact on the structure to be protected. For many people the
term lightning conductorconjures up an image of a bright green strip
running down the spire of a church. This would clearly be unacceptable
to the owner / architect of a modern structure.
In
order to reduce the impact of an external system Furse offer a range of
UV stabilised PVC covered tapes and solid circular conductors in
colours chosen to match common building materials.
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| Black |
18B29 |
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| Green |
BS 6746C |
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| Grey |
00A07 |
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| Stone |
08B23 |
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| White |
10B15 |
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| Brown |
06C39 |
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Copper conductor ratings
For
below ground earthing applications Furse produce a large range of bare
copper, tape and stranded conductors thus offering the designer of the
system the correctly rated conductor without the need to oversize.
The
following conductor ratings are based upon the recommendations of BS
7430 with an initial conductor temperature of 30°C and a maximum
temperature of 250°C.
Conductor
size |
CSA |
kA for
1 sec |
kA for
3 sec |
Part no |
Conductor
size |
CSA |
kA for
1 sec |
kA for
3 sec |
Part no |
| 12.5 x 1.5mm |
18.75 |
3.3 |
1.9 |
TC005 |
31 x 6mm |
186 |
32.7 |
18.9 |
TC050 |
| 12.5 x 3mm |
37.5 |
6.6 |
3.8 |
TC010 |
38 x 3mm |
114 |
20.1 |
11.6 |
TC055 |
| 20 x 1.5mm |
30 |
5.3 |
3.0 |
TC015 |
38 x 5mm |
190 |
33.4 |
19.3 |
TC060
-FU |
| 20 x 3mm |
60 |
10.6 |
6.1 |
TC020 |
38 x 6mm |
228 |
40.1 |
23.2 |
TC065 |
| 25 x 1.5mm |
37.5 |
6.6 |
3.8 |
TC025 |
40 x 3mm |
120 |
21.1 |
12.2 |
TC067 |
| 25 x 3mm |
75 |
13.2 |
7.6 |
TC030 |
40 x 4mm |
160 |
28.2 |
16.3 |
TC066 |
| 25 x 4mm |
100 |
17.6 |
10.2 |
TC035 |
40 x 5mm |
200 |
35.2 |
20.3 |
TC071 |
| 25 x 6mm |
150 |
26.4 |
15.2 |
TC040 |
40 x 6mm |
240 |
42.2 |
24.4 |
TC068 |
| 30 x 2mm |
60 |
10.6 |
6.1 |
TC039 |
40 x 6.3mm |
252 |
44.4 |
25.6 |
TC069 |
| 30 x 3mm |
90 |
15.8 |
9.1 |
TC042 |
50 x 3mm |
150 |
26.4 |
15.2 |
TC070 |
| 30 x 4mm |
120 |
21.1 |
12.2 |
TC044 |
50 x 4mm |
200 |
35.2 |
20.3 |
TC075 |
| 30 x 5mm |
150 |
26.4 |
15.2 |
TC043 |
50 x 5mm |
250 |
44.0 |
25.4 |
TC078 |
| 31 x 3mm |
93 |
16.4 |
9.5 |
TC045 |
50 x 6mm |
300 |
52.8 |
30.5 |
TC080 |
| 31.5 x 4mm |
126 |
22.2 |
12.8 |
TC048 |
50 x 6.3mm |
315 |
55.4 |
32.0 |
TC082 |
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| Lightning Conductors |
| Flat Tape | Solid Circular | Stranded |
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