“Smart people learn from their mistakes. But the real sharp ones learn from the mistakes of others.”
Avondale Lifecare is a 67-bed rest home and hospital that offers dementia and medical care. After an electrical fire broke out, ambulance crews assessed more than 30 people, and two were taken to the hospital.
Fire and Emergency NZ were called to the Manukau Library and Research Centre due to an electrical fault that had caused a fire in the basement. The four-story building was heavily smoke-logged.
Proper electrical maintenance is important in your office or school, not just because of electrical fires. There are risks and hazards with electrical shock, equipment damage, disruptions and downtime, and compliance with safety regulations and standards.
Quick tip: one thing to watch out for is overloading electrical power points—it is a fire hazard waiting to happen.
The most common technique employed by those who have had to learn from their mistakes? It’s called ‘run to failure’. Everything is operated continuously without any proactive maintenance interventions until it breaks down.
What are the basics of electrical maintenance?
Electrical maintenance in buildings would include:
- Regular inspections of electrical systems: wiring, outlets, switches, and appliances.
- Checking for overloading and usage of properly rated extension cords and multi-plugs.
- Maintain lighting systems; replace bulbs, clean fixtures, and ensure proper ventilation to prevent overheating.
- Switchboard maintenance and circuit breaker testing.
Of course, sites will vary in their requirements—air conditioning units, school bell, exterior lighting, security cameras, smart whiteboards, hand dryers, EV chargers, etc. If the premises have emergency lighting requirements, these maintenance checks should be completed twice a year. Read our article about building consent triggering emergency lighting updates.
Types of maintenance strategies
Run-to-failure maintenance operates equipment until it fails without proactive interventions. It is typically used for non-critical equipment with low repair costs or when preventive maintenance costs exceed repair expenses. Though seemingly cost-effective initially, it can result in unplanned downtime, shortened equipment lifespans, safety hazards, and higher repair costs over time.
Preventive maintenance entails scheduled inspections, servicing, and repairs to prevent equipment failures before they occur. Tasks are based on predetermined schedules or intervals—either time-based (e.g., monthly, quarterly) or usage-based (e.g., after specific operating hours). The goal is to extend equipment lifespan, minimise downtime, enhance reliability, and mitigate the risk of costly failures.
Predictive Maintenance utilises real-time monitoring of equipment condition and performance through techniques like sensors, data analytics, and predictive modelling. By analysing data trends, maintenance tasks are scheduled based on actual equipment conditions rather than fixed schedules. This reduces downtime, optimises maintenance schedules, improves equipment reliability, and provides cost savings by minimising unnecessary tasks.
Reliability-centered maintenance (RCM) is a systematic approach focused on maximising equipment reliability and minimising costs. It involves identifying critical assets, analysing failure modes, and developing customised maintenance strategies based on risk and reliability considerations. RCM prioritises maintenance tasks based on equipment criticality and potential failure modes, incorporating preventive, predictive, and proactive techniques to optimise maintenance efforts and resources.
How often?
The frequency of electrical maintenance in an office depends on various factors, including the building’s age, the condition of the electrical systems, and regulatory requirements.
Give us a call or book a consult, we’ll come and assess your property and provide you with a quote.
Why a planned maintenance programme beats calling when it breaks
Reactive maintenance looks cheaper until you count what it actually costs: emergency rates, a business closed while the fault is found, equipment that failed early because a small problem went unnoticed, and an insurance claim that turns on whether you can show the installation was maintained.
A planned programme changes four things:
- Budget certainty. Inspections, testing and scheduled replacements become a known annual figure instead of an unpredictable one. Ageing components — a tired distribution board, failing ballasts, corroded outdoor circuits — get replaced across budget cycles rather than all at once after a failure.
- Compliance you can evidence. Standards and codes change. A programme keeps the installation current and, just as importantly, keeps the paperwork current, which is what an auditor, an insurer or a prospective tenant actually asks for.
- Fewer surprises. Thermal imaging, insulation resistance testing and routine inspection catch loose terminations, overloaded circuits and degrading insulation while they are still cheap to fix. A hot connection found in a scheduled scan is a twenty-minute job; the same connection found after it fails is a fire investigation.
- An installation someone understands. The same team keeps records of what’s where, what’s been changed and what’s due — which matters most on the day something goes wrong.
See our thermal imaging page for how we survey live switchboards without shutting anything down.
Compliance: what a building owner is actually responsible for
If your building has specified systems — emergency lighting, fire alarms, sprinklers, smoke control, lifts, and similar — they are recorded on a compliance schedule, and the building owner must issue a Building Warrant of Fitness every twelve months confirming those systems have been inspected, maintained and reported on as the schedule requires.
You can’t sign that yourself on the basis of a general impression. Each specified system needs certification from an Independently Qualified Person for that system, and those certificates are what the annual warrant rests on. Emergency lighting is the one most commonly found lapsed: it sits unused for years, and the only way to know it works is to test it.
New building work brings its own trail — a Code Compliance Certificate for the consented work, and a Certificate of Compliance for the electrical installation itself. Keep both. They are the record that the work was done by someone entitled to do it.
We handle IQP compliance and emergency lighting testing as part of ongoing maintenance contracts.
Test and tag: portable equipment
Fixed wiring is only half the picture. Every appliance, lead, extension cord and power board on site is in-service equipment, and under health and safety law the business is responsible for it being safe to use.
Testing intervals depend entirely on the environment. Equipment on a construction site, in a workshop or anywhere it gets dragged around and rained on needs checking far more often than a monitor in an office that hasn’t moved in three years. The standard sets those intervals; the practical point is that a leased office and a fabrication shop are not on the same schedule, and treating them the same either wastes money or leaves a gap.
Surge protection in a commercial installation
The consequences scale differently in a commercial building. A surge that costs a household a television costs a business its servers, its point-of-sale, its access control and a day of trading — and the data loss is usually worth more than the hardware.
In built-up and industrial areas, surges are commonly generated on site rather than by weather: a large motor starting, a faulty machine, a transformer glitch. Protection is layered — a device at the main switchboard for the large transients, distribution-level protection for sensitive sub-boards, and UPS on anything where a clean shutdown matters. Get the earthing verified at the same time; without it, none of the above has anywhere to send the energy.
Schools and education facilities
Schools carry an additional obligation. Electrical work in school buildings must comply with the Ministry of Education’s standard for school electrical installations, which goes beyond the general wiring rules — and the people on site need to be appropriately vetted as well as appropriately qualified, because they are working around children.
Ask for evidence of registration and practising licence, not a verbal assurance, and ask who will actually be on site rather than who is signing the quote. Planned maintenance also fits the school year better than reactive work: term breaks are when disruptive work can happen without emptying a classroom.
See our school electrical maintenance page.
Lighting: the maintenance item people forget is one
Lighting degrades slowly enough that nobody notices. Output falls, colour shifts, diffusers yellow, and a space that was designed correctly ten years ago is now dim and unpleasant to work in.
Poor lighting has real consequences in a workplace: eye strain, headaches, and the flicker and glare that make screen work tiring. Getting it right is a matter of the right light level for the task, reasonable colour temperature, glare control, and lighting that works with whatever daylight the building actually gets rather than fighting it.
An LED upgrade is usually the point where this gets addressed, because the energy saving pays for a redesign rather than a like-for-like swap. Occupancy sensing and daylight dimming in areas that are intermittently used add to that. See commercial indoor lighting.
Setting up a programme
A maintenance programme starts with knowing what’s there: a walk-through of the installation, the switchboards, the specified systems and the compliance schedule, and an honest list of what’s overdue. From there it becomes a calendar — what gets inspected, tested and certified, and when.
To talk through a maintenance programme for your site, call French Electrical on 09 274 8082 or see our commercial and industrial services.