| Lightning Conductors |

| Flat Tape | Solid Circular | Stranded |

Lightning Protection Conductors

Conductor chart and copper ratings
furse

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.

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.

Black 18B29  
Green BS 6746C  
Grey 00A07  
Stone 08B23  
White 10B15  
Brown 06C39  

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

 

| Lightning Conductors |

| Flat Tape | Solid Circular | Stranded |