ELTRO works across the full life of an electrical system: how power is brought into a building, how it is divided into protected circuits, how it reaches lighting, machinery and safety equipment, and how the installation is kept in good condition for years after it is energised.
Every reliable installation starts with an understanding of demand. Before any cable is pulled, the expected loads, their operating patterns and the way they may grow over time determine conductor sizes, the number and type of circuits, and the arrangement of distribution boards. Getting these decisions right is what separates an installation that simply works on handover day from one that remains safe and practical through years of use.
ELTRO's technical services cover electrical installation for new and renovated buildings, electrical maintenance and inspection, industrial power distribution and control, lighting systems, and the electrical side of safety and security equipment.
These disciplines overlap constantly. A lighting upgrade changes circuit loading. A new production line may require a dedicated sub-distribution board. Access control depends on stable power and correctly segregated cabling. Treating them as connected parts of one system leads to cleaner layouts, fewer conflicts on site and installations that are easier to maintain.
Requirements always depend on the specific building, the applicable local regulations and the equipment being supplied. That is why every project is approached through assessment and planning rather than a fixed template.
The same physical principles apply everywhere, but the priorities, load profiles and operational constraints change significantly from one type of property to another.
Residential installations prioritise occupant safety, convenience and a sensible distribution of sockets and lighting points. Residual current protection, logical circuit separation and future capacity for appliances, heat pumps or vehicle charging are common considerations.
Commercial buildings combine general power with dense data and lighting layouts, emergency lighting and frequent tenant changes. Flexibility, clear labelling and distribution that can be reconfigured without major disruption become essential.
Industrial sites deal with motor loads, high starting currents, harsh environments and the real cost of downtime. Selective protection, robust enclosures and maintenance access shape almost every design decision.
Each category has its own dedicated page with technical detail on how the work is planned, carried out and maintained.
Wiring, distribution boards, circuit protection and connection points for new buildings and renovations.
Power distribution, control panels and machinery supplies for production and process environments.
Preventive inspection, connection assessment and protection checks that keep systems dependable.
Indoor, outdoor and architectural lighting with LED technology and practical controls.
Protective devices, access control and the power and cabling behind surveillance equipment.
Distribution is the route electrical energy takes from the point of supply to every outlet, luminaire and machine. A well-planned distribution system keeps voltage drop within acceptable limits, balances load across phases, and divides the installation into sections that can be isolated without shutting down everything else.
Poorly planned distribution tends to show its weaknesses slowly: cables running warm on heavily loaded circuits, nuisance tripping when several large loads start together, or boards with no spare ways when the building's use changes. Each of these problems is far cheaper to avoid at the design stage than to correct after occupation.
Metering, main isolation and the protective device that defines the capacity available to the building.
The central board that divides the supply between sub-boards, major plant and dedicated feeders.
Local boards on each floor, zone or production area, keeping final circuits short and faults contained.
Socket, lighting and equipment circuits, each with protection selected for its load and conditions.
Protective devices, earthing and inspection all work together. When one part is neglected, the others cannot fully compensate for it.
Circuit breakers and fuses are selected for the cable they protect and the fault level at their location, so that a fault is cleared quickly without damaging conductors.
Effective earthing, equipotential bonding and residual current devices limit the risk to people when insulation fails or equipment becomes faulty.
Coordinated protection ensures that only the device closest to a fault operates, leaving the rest of the installation in service.
Testing on completion confirms the installation behaves as designed, and periodic inspection identifies deterioration before it becomes a hazard. See electrical maintenance.
A structured sequence reduces surprises on site and gives the client clear decision points before costs are committed.
Understanding how the building or facility is used, which equipment must be supplied, and what constraints exist on access, working hours and continuity of supply.
For existing buildings, reviewing the condition of current boards and cabling, available supply capacity and any documentation that already exists.
Estimating maximum demand, choosing circuit arrangements, cable routes and protective devices, and checking the result against applicable regulations.
Executing the work in a sequence that respects other trades, keeps live systems safe and minimises disruption to occupants or production.
Verifying the installation, recording results and providing circuit schedules and drawings that make future maintenance straightforward.
Start by reviewing the service categories, or send an enquiry describing the property, the equipment involved and what you would like to achieve.