Lightning Protection Testing and Certification


Lightning Protection Testing and Certification

What is the need for Lightning Protection Testing and Certification?

Lightning strikes hit the ground approximately 300,000 times each year. The lightning protection system is there to intercept, conduct and disperse a lightning strike safely to earth. Without a lightning protection system, a building’s structure, electronic systems, and the living beings working around or within it are all at high risk. There are many ways in which lightning strikes can cause damage or injury. Lightning strikes (or even electrical discharges due to nearby lightning) can cause fires, explosions, chemical releases or mechanical disruption within or around a building. This could lead to injuries, physical damage, or even loss of life.


Upon satisfactory inspection and testing, all equipment will be certified accordingly, and any reports will be issued at no extra cost. Many of our competitors charge an additional fee for the certification.

A full photographic report will be issued when a system fails to enable our customer to see the work required. We will then have the works carried out at your earliest convenience so that you are compliant with the regulations.

We always inspect and recertify every single accessible earthing position on site, whereas a lot of our competitors will test and inspect only 1 in 3 or 4 positions and give you an overall reading. This is less time-consuming for the sub-contractor but is not an efficient reading for the client.

Are Lightning Conductor Inspections and Retestings Necessary?

Are Lightning Conductor Inspections and Retestings Necessary?

Yes, lightning protection testing is essential. Our retesting inspections include a comprehensive visual check to ensure the system is in good working condition and accessible earth readings. Key points of inspection include:

  • Resistance to earth readings for each earth termination
  • Equi-potential bonds
  • Corrosion of earth electrodes
  • Condition of connections
  • Deterioration and corrosion of air-termination elements, conductors, and connections
  • Conductor fixings

Barton’s engineers are fully qualified and follow all work regulations, performing installation, detailed inspection, and testing of lightning protection systems. Our engineers hold gold cards and provide excellent service on-site.

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In Britain, lightning strikes are more common than you might think. Lightning protection systems prevent excess electric energy from damaging your building by providing a safe path to the ground. This process prevents water from flowing through electrical wiring and piping, which could cause significant damage. Testing lightning conductors and grounding installations involves visually inspecting and testing these systems.

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Frequently Asked Questions

Why Do You Need Lightning Protection Testing and Certification?

Every year, lightning strikes the ground about 300,000 times. A lightning protection system intercepts, conducts, and safely disperses these strikes to the ground. Without it, buildings, electronic systems, and people are at high risk. Lightning can cause fires, explosions, chemical releases, and mechanical disruptions, potentially leading to injuries, structural damage, or even fatalities.

What is Lightning Testing & Certification?

Lightning testing and certification involve a series of tests that adhere to industry standards to evaluate the effectiveness, safety, and compliance of lightning protection systems. These systems protect buildings, structures, and electrical equipment from lightning-induced damage.

How Do You Test for Lightning Protection?

Several methods exist for lightning protection testing, with the direct strike test being the most common. This involves using a high-voltage generator to simulate a lightning strike. Other tests measure and test the resistance of grounding systems and examine surge protection devices.

How Often Should a Lightning Conductor System Be Tested & Certified in the UK?

According to British Standard BS EN 62305, lightning protection systems should be inspected and tested at least every 12 months or after significant alterations or repairs. This ensures the system remains compliant with safety regulations.

What is the BS EN 62305 Test?

The BS EN 62305 test includes standards set by the British Standards Institution for lightning protection systems. These guidelines cover the design, installation, inspection, and recertification of systems to meet safety requirements.

What is the Best Protection Against Lightning?

A properly installed and maintained lightning protection system offers the best defence against lightning. This system includes conductors, grounding systems, surge protection devices, and bonding connections to safely dissipate the energy from a lightning strike.

Are Lightning Protection Systems Worth It?

Yes, investing in a lightning protection system is worthwhile, considering the potential damage and safety risks associated with lightning strikes. These systems protect buildings and structures and safeguard electrical equipment from costly repairs or replacements.

Is Lightning Protection Testing & Certification a Legal Requirement in the UK?

Yes, in the UK, certain buildings and structures must have a lightning protection system installed. This includes high-rise buildings, hospitals, schools, and other public facilities. Non-compliance can result in fines or legal consequences.

Lightning Protection Requirements According to British Standard (BS EN 62305)

Section 5 of the Electricity at Work Act 1989 mandates regular visual inspections and testing of all lightning conductors, ideally not exceeding 12 months between checks. Inspections ensure that lightning protection measures meet British standards (BS EN 62305), reducing the risk of damage to structures and the people within them.

Lightning protection systems must safely channel the current to the earth, ensuring equipment continues to function, and the building or structure, as well as its occupants, remain safe. A poorly maintained system may fail to effectively carry the current to the ground.