Hello,
we recently had some severe thunderstorms again.
A quick question: we have a modern townhouse with a flat roof. I have never seen a lightning rod.
Is it always necessary to install one on the roof?
Hmm, probably a silly question, but I would appreciate some clarification.
we recently had some severe thunderstorms again.
A quick question: we have a modern townhouse with a flat roof. I have never seen a lightning rod.
Is it always necessary to install one on the roof?
Hmm, probably a silly question, but I would appreciate some clarification.
Lightning rods can be blown away by winds and storms.
Numerous side strikes recorded on towers prove that lightning mostly, but not necessarily, strikes the highest points and not always the locations with the lowest impedance.
Preferred strike points are areas with high field line concentration, such as lightning rods or building corners.
Where lightning protection systems are required by building regulations or recommended following a risk assessment according to IEC 62305-2, it is not sufficient to install only the external lightning protection system—commonly referred to as a lightning rod—which includes air-termination devices, down conductors, and grounding system. It must always be installed together with an internal lightning protection system, which includes equipotential bonding and surge protection.
Lightning protection should therefore not focus solely on direct strikes but requires a comprehensive concept that takes into account that the total number of indirect surge damages is approximately five times higher than direct lightning damages, including total losses.
As a result, after the transition period of DIN VDE 0100-443:2006-10 and DIN VDE 0100-534:2006-10 has expired, surge protection will also be mandatory for new buildings even without a lightning protection system.
Numerous side strikes recorded on towers prove that lightning mostly, but not necessarily, strikes the highest points and not always the locations with the lowest impedance.
Preferred strike points are areas with high field line concentration, such as lightning rods or building corners.
Where lightning protection systems are required by building regulations or recommended following a risk assessment according to IEC 62305-2, it is not sufficient to install only the external lightning protection system—commonly referred to as a lightning rod—which includes air-termination devices, down conductors, and grounding system. It must always be installed together with an internal lightning protection system, which includes equipotential bonding and surge protection.
Lightning protection should therefore not focus solely on direct strikes but requires a comprehensive concept that takes into account that the total number of indirect surge damages is approximately five times higher than direct lightning damages, including total losses.
As a result, after the transition period of DIN VDE 0100-443:2006-10 and DIN VDE 0100-534:2006-10 has expired, surge protection will also be mandatory for new buildings even without a lightning protection system.
Dipol schrieb:
Therefore, after the transition period for DIN VDE 0100-443:2006-10 and DIN VDE 0100-534:2006-10 expires, surge protection will also become mandatory for new buildings without lightning protection systems.A requirement for surge protection (not to be confused with external lightning rods) also sounds reasonable and should already be implemented by any competent electrician.
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