Lightning Protection Testing
Periodic inspection and testing of structural lightning protection systems to BS EN 62305, with a test certificate.
View service →Lightning protection
Earth Resistance Testing
Earth electrode and earthing system resistance measured with calibrated equipment and recorded per test point.
- Independent inspectors
- BS EN 62305
- Certificate every test
- Midlands, South & Wales
The earth is where a lightning system sends the strike. If the electrode resistance creeps up, the current looks for another route, and that route might be through the building.
We measure the resistance of each earth electrode and the overall earth, using dead-earth or clamp methods as the site allows, and compare the results with the previous test.
Standards
Inspected against
BS EN 62305-3Physical damage to structures and life hazardBS 7430Code of practice for protective earthingBS EN 62561Lightning protection system componentsBS 6651Withdrawn code of practice, still common on older installations
What we check
Inspection checklist
- Individual earth electrode resistance
- Overall system earth resistance
- Test clamp condition and access
- Earth pits and inspection covers
- Comparison with previous results
- Bonding between earth systems
- Calibrated test equipment
- Results recorded per test point
How it works
From building details to test certificate
- 1
Send your site details
The site address and the building size, or your last test certificate, is enough to price the job.
- 2
Fixed quotation
Priced per site, with multi-site estates grouped into efficient routes.
- 3
Inspection & testing
Every air termination, down conductor and earth inspected and tested on site.
- 4
Certificate & report
Test certificate, results per test point, photos of defects and the next test date.
FAQs
Common questions
What earth resistance should we see?
The common target for a lightning protection earth is 10 ohms or less overall, though BS EN 62305 places more weight on the electrode arrangement.
What if the readings are too high?
We recommend remedial work, usually extra or deeper electrodes, and can quote for it.
Can you test without disconnecting the system?
Clamp-on testing lets us measure many electrodes without disconnecting them, where the system allows.
Coverage
Earth Resistance Testing inspection near you
Related services
More lightning protection services
Lightning Protection Maintenance & Repairs
Repairs to failed tapes, clamps, test points and earth electrodes, so your system passes its next test.
View service →Lightning Risk Assessment
Risk assessment to BS EN 62305-2 to show whether a building needs lightning protection, and at what level.
View service →Lightning Protection Condition Surveys
A full survey and drawing of an existing lightning protection system when records are missing or out of date.
View service →Free quotation
Book earth resistance testing
Send the building address or your last certificate. We'll come back with a fixed price and the earliest date.
Phone 01242 420 255
- Reply within one working day
- Fixed price per site
- No obligation