Conductors TNB.COM（导体TNB.COM）.pdf

Conductors By far the largest an dmost important component of any structural lightning protection or earthing system is the actual conductor. Selection of the correct conductor type for the installation is highly important, an dis likely to be the initial consideration of a lightning protection or earthing system designer. A comprehensive range of Furse copper an daluminium conductors are available in each of the main worl dstandar formats, i.e. flat tape, soli dcircular an dstranded. A itionally each format is available in a variety of conductor sizes, to meet differing lightning protection an dearthing requirements. Specification will depen don whether the application is for an above groun dstructural lightning protection system, or a below groun dearthing installation. Conductors for structural lightning protection systems Furse lightning protection conductors are available in copper an daluminium, an dare supplie dbare or with PVC coating (see below). For most installations, copper is specifie ue to its high conductivity an danti- corrosive properties. The following sizes are suitable for the majority of above groun dlightning protection systems: Flat tape conductor: 25 x 3 mm bare tape, or 25 x 3 mm PVC covere dtape Solid circular conductor 8 mm diameter bare or PVC covere dsoli dcircular conductor Stranded conductor 70 mm2 bare or PVC covere dstrande dconductor Conductor colour chart The choice of a lightning protection conductor is Black 18B29* usually governe dby its aesthetic impact on the structure to be protected. For many people the term lightning conductor conjures up an image of a Green BS 6746C discoloure dcopper strip running do