Certified once a year.
Protected every second.
We certify it. We watch it. We fix it.
For over 20 years, Wattson & Ohms has been the accredited engineering authority behind the earthing, lightning and surge protection that keeps South Africa’s mines and heavy industry safe. We don’t just design and certify those systems — we stand behind them around the clock, proving they’re working and putting them right when they’re not.
Protect the site. Then prove it stays protected.
Designed, installed, certified.
We design, install and compliance-test the systems that keep your people, plant and production safe from lightning, earth faults and surges. Site-specific earthing designs, lightning risk assessments, surge suppression, soil resistivity and ground potential rise studies — certified to SANS and IEC standards.
View protection services →Proof it’s working now.
A compliance certificate proves your protection worked on the day it was tested. We keep proving it every day after. Backed by accredited engineers, continuous monitoring and the authority to certify and remediate, we take ongoing responsibility for the protection you can’t afford to have fail — with a live dashboard as your proof it’s sound.
Discover continuous assurance →Every compliance certificate is a snapshot.
Between test dates, an earthing system can quietly degrade — corrosion, physical damage, shifting soil, or the theft of copper conductors that’s become a daily reality on South African sites. A surge device can reach end-of-life without a single visible sign. And you won’t know until the next annual test — or until it fails during the storm you were relying on it for.
See how monitoring works →Where a single fault halts production.
Cathodic protection monitoring for buried and submerged assets — pipe-to-soil potential, rectifier output and anode condition, tracked continuously.
Earthing and lightning safety for shafts, plants and surface infrastructure, where a single lightning event or earth fault can halt production and endanger crews.
Surge and earthing protection for process plant and critical equipment, with monitoring that flags degradation before it reaches your production line.
Protection and continuous assurance for buildings, substations and sites where uptime and equipment survival are non-negotiable.
“Moving to a proactive maintenance SLA with Wattson & Ohms was one of the best facility management decisions we’ve made. Their monthly testing, rapid minor repairs, and clear reporting ensure our lightning and surge protection systems remain fully compliant and operational year-round.”
Guidance for engineers and site managers.
Why an annual certificate leaves 364 days of risk unaccounted for.
How continuity alerts turn a silent failure into an immediate response.
A practical checklist for keeping evidence audit-ready year round.
Let’s talk about what’s protecting your site — and how to prove it’s working.
Our consultants are ready to assess your earthing, lightning and surge protection, and show you what continuous monitoring would reveal about your site today.