Frequently asked electrical questions

LAIRD Electrical provides commercial electrical installations for offices, shops, warehouses and industrial premises. Our services include three-phase electrical installations, distribution board upgrades, commercial rewiring, new-build installations and electrical work for commercial fit-outs.

Yes. LAIRD Electrical carries out electrical installation work for new commercial buildings and business premises. This can include wiring, power distribution, lighting circuits and electrical infrastructure planned around the building's layout, intended use and operational requirements.

Yes. Existing commercial electrical installations can be upgraded to accommodate changes in building use, additional equipment or increased electrical demand. Depending on the installation's condition, this may involve circuit alterations, distribution board upgrades, partial rewiring or more extensive electrical improvements.

A commercial electrical installation typically involves assessing the premises, planning the electrical requirements, installing cables and equipment, and carrying out the necessary inspection and testing. The scope depends on the building, electrical demand and type of work. Appropriate electrical certification is provided where required.

Some commercial electrical installation work can be planned around normal business operations to minimise disruption. However, certain tasks require electrical circuits or equipment to be safely isolated. LAIRD Electrical can discuss the work involved and help plan suitable access and shutdown arrangements.

LAIRD Electrical carries out three-phase electrical installation and distribution work for commercial and industrial premises. This can include three-phase circuits, distribution equipment and upgrades to existing installations. Changes requiring a new or increased incoming supply must be coordinated with the relevant electricity network operator or supplier.

A commercial distribution board may need upgrading if it is damaged, deteriorating, unsuitable for the installation or unable to accommodate planned electrical alterations. An assessment can establish whether replacement is appropriate and what improvements are needed to support safe electrical distribution.

Yes. LAIRD Electrical provides electrical installation services for commercial fit-outs, including offices, retail units and other business premises. Work can include new circuits, socket outlets, distribution boards and lighting installations designed around the proposed layout and intended use.

The timescale depends on the size of the premises, the complexity of the electrical work and whether the building remains occupied. Smaller alterations may take considerably less time than a complete commercial fit-out or rewire. A project assessment helps establish a realistic programme.

Depending on the work undertaken, an Electrical Installation Certificate (EIC) or Minor Electrical Installation Works Certificate may be appropriate. These documents record relevant inspection and testing information and help demonstrate that the completed electrical work has been assessed against applicable requirements.

Commercial electrical installation costs depend on the building size, number of circuits, distribution requirements, equipment specifications and complexity of the work. LAIRD Electrical can discuss your requirements and provide a quotation based on the proposed installation.

LAIRD Electrical provides commercial electrical installation services in Leeds and across its service area in Yorkshire. Contact us with your business location and project requirements to discuss availability and the electrical work needed.

Commercial electrical testing and inspection involves examining and testing electrical installations or equipment to assess their condition and identify potential safety concerns. Services can include Electrical Installation Condition Reports (EICRs), fixed wire testing, emergency lighting testing, fire alarm testing and portable appliance testing.

An Electrical Installation Condition Report, commonly called an EICR, records the findings of a periodic inspection and test of an existing electrical installation. It identifies observed defects, deterioration and potential dangers, helping businesses understand whether remedial electrical work or further investigation is needed.

The appropriate interval for a commercial EICR depends on the type of premises, installation condition, operating environment and associated risks. Five years is a commonly referenced maximum initial interval for many commercial premises, but some installations require more frequent inspection. The previous report and a competent assessment should inform the next inspection date.

UK health and safety legislation requires electrical systems used at work to be maintained so as to prevent danger, as far as reasonably practicable. An EICR is an established way to assess the condition of fixed electrical installations, although there is no single statutory EICR interval applying to every commercial property.

Commercial fixed wire testing involves inspecting and testing the building's fixed electrical installation, including relevant circuits, protective devices, wiring and distribution equipment. The inspection and testing help identify deterioration, defects and other conditions that could affect electrical safety.

An EICR records observations using classification codes that indicate the nature and urgency of identified issues. Dangerous conditions require prompt action, and some findings may need further investigation. LAIRD Electrical can discuss the report's findings and suitable remedial electrical work.

Electrical testing can sometimes be arranged around business operations, depending on access and availability. Some tests require circuits to be isolated temporarily, so advance planning is important. Discuss your operating hours and shutdown requirements when arranging commercial electrical testing.

An EICR assesses the condition of a building's fixed electrical installation, including wiring, circuits and distribution equipment. PAT testing focuses on the safety of portable or movable electrical equipment through appropriate visual inspection and, where necessary, electrical testing. They address different aspects of workplace electrical safety.

UK law does not generally require every portable electrical appliance to undergo annual PAT testing. However, businesses must manage risks associated with electrical equipment used at work. Inspection and testing arrangements should reflect the equipment, its use, operating conditions and level of risk.

Emergency lighting should be inspected and tested at appropriate intervals in accordance with the applicable system requirements and relevant guidance, including BS 5266. Common arrangements include monthly functional checks and annual full-duration testing. The appropriate programme should reflect the installation and its maintenance requirements.

Commercial fire alarm systems generally require routine user testing and periodic servicing by a competent person. BS 5839-1 provides recommendations for non-domestic fire alarm systems, including weekly user tests and servicing intervals that should not normally exceed six months. The system's requirements and fire risk assessment should also be considered.

The documentation depends on the testing carried out. For example, fixed wire inspection normally results in an EICR, while other services may produce test records, inspection reports or equipment schedules. These records help businesses track findings, maintenance requirements and any necessary remedial work.

LAIRD Electrical provides commercial lighting installations for offices, shops, warehouses, industrial buildings and external business areas. Services include LED lighting installations, lighting upgrades, high-bay and industrial lighting, security lighting and commercial floodlighting.

Upgrading to commercial LED lighting can reduce electricity consumption, improve lighting quality and lower maintenance requirements compared with many older lighting technologies. Modern LED fittings also offer a range of colour temperatures, light outputs and beam patterns to suit different working environments.

Yes. Many existing fluorescent lighting installations can be upgraded to LED. Depending on the fittings and electrical installation, this may involve replacing complete luminaires or using suitable conversion solutions. A site assessment helps identify the most appropriate approach.

Potential energy savings depend on the existing lighting technology, operating hours, fitting efficiency and replacement design. LED lighting commonly uses significantly less electricity than older halogen or fluorescent systems, but actual savings should be calculated using the existing and proposed lighting specifications.

Commercial lighting work can often be scheduled to minimise disruption to staff, customers and daily operations. Some installations require temporary isolation of lighting circuits or access to working areas. LAIRD Electrical can discuss practical arrangements before work begins.

Suitable office lighting should provide appropriate illumination for the tasks being performed while considering glare, visual comfort, colour appearance and energy efficiency. LED panel lighting and other commercial luminaires can be selected to suit the workspace layout and lighting requirements.

Retail lighting should balance customer comfort, product presentation, visibility and energy efficiency. Important considerations include general illumination, accent lighting, colour rendering, glare and the layout of display areas. The most suitable lighting design depends on the type of retail environment.

Warehouses and industrial buildings often require robust lighting capable of illuminating high ceilings, storage aisles and working areas. LED high-bay fittings and other industrial luminaires can provide suitable illumination, with positioning and light output selected for the building's layout and activities.

Yes. LAIRD Electrical installs outdoor commercial lighting, security lighting and floodlights for business premises. Installations can help illuminate entrances, car parks, loading areas, yards and building exteriors, with fittings selected for the location and environmental conditions.

Appropriate workplace lighting can improve visibility, help people identify hazards and support safer movement around commercial premises. Lighting should be suitable for the tasks and activities undertaken, particularly in areas involving machinery, vehicle movement, stairs or changes in floor level.

LED fitting lifespans vary according to product quality, operating temperature, usage and maintenance. Many commercial LED products are rated for tens of thousands of operating hours, although this is not a guarantee that every component will last that long. Product specifications should be checked when selecting fittings.

The cost of a commercial LED lighting upgrade depends on the number and type of fittings, mounting height, access requirements, existing wiring and installation complexity. LAIRD Electrical can assess your premises and provide a quotation based on your lighting requirements.

LAIRD Electrical provides specialist electrical installations for commercial premises, including emergency lighting, fire alarm systems, CCTV and electronic access control. These systems support different aspects of building safety, security and controlled entry.

Emergency lighting provides illumination when the normal lighting supply fails, helping occupants identify and navigate escape routes. Suitable emergency escape lighting forms an important part of a building's fire safety arrangements, particularly where loss of normal lighting could make evacuation difficult.

Many commercial buildings require suitable emergency escape lighting as part of their fire safety arrangements. The specific requirements depend on the premises, occupancy, escape routes and fire risk assessment. Relevant guidance, including BS 5266, can help inform the system's design.

Maintained emergency lighting operates during normal conditions and continues to provide illumination when the normal supply fails. Non-maintained emergency lighting normally remains off and activates when the normal lighting supply fails. The appropriate type depends on the building and its emergency lighting requirements.

The appropriate commercial fire alarm system depends on the building's layout, occupancy, activities and fire risk assessment. BS 5839-1 provides recommendations for different fire alarm system categories in non-domestic premises. A suitable design should reflect the risks and warning requirements of the building.

Yes. Existing commercial fire alarm systems may be upgraded when building layouts change, equipment becomes outdated or the current arrangements no longer meet the premises' needs. An assessment can establish whether individual components can be upgraded or more extensive changes are necessary.

Commercial CCTV cameras are commonly positioned to monitor entrances, exits, car parks, yards and other areas identified as security priorities. Camera placement should consider visibility, lighting, potential blind spots and privacy. Coverage should be proportionate to the security purpose.

Businesses should consider why CCTV is needed, which areas require coverage, camera positioning, image quality and how recordings will be managed. Where identifiable individuals are recorded, data protection obligations may apply, including lawful processing, appropriate security and clear information about surveillance.

Where commercial CCTV involves processing personal data, businesses generally need to provide clear information to individuals about the surveillance. Visible CCTV signage is a common way to help meet transparency requirements, alongside more detailed privacy information where appropriate.

Commercial access control systems help businesses manage entry to buildings and restricted areas. Depending on the system, they can provide greater flexibility than traditional keys by allowing access permissions to be assigned, changed or withdrawn without replacing mechanical locks.

Yes. Electronic access control systems can use different entry methods, including keypads, proximity fobs and access cards. The most suitable option depends on the number of users, required security level, access arrangements and day-to-day operation of the premises.

Access control installations must be planned so that security arrangements do not prevent safe emergency escape. This may require appropriate door hardware, release arrangements and coordination with the building's fire safety strategy. The design should reflect the premises and relevant safety requirements.

Commercial electrical maintenance can include inspecting electrical installations, checking equipment condition, identifying deterioration, investigating developing faults and carrying out preventative repairs. The work required depends on the building's electrical systems, operating environment and maintenance needs.

Regular commercial electrical maintenance helps identify potential problems before they develop into more serious faults. It supports electrical safety, improves reliability and can reduce the likelihood of unexpected disruption. Maintenance arrangements should reflect the installation's condition and associated risks.

Planned electrical maintenance involves scheduled checks and preventative work intended to maintain safe, reliable operation. Reactive electrical repairs take place after a fault or failure has occurred. Both approaches can be necessary, but planned maintenance helps businesses identify problems earlier.

Commercial electrical maintenance intervals depend on the type of installation, operating conditions, equipment usage and associated risks. Some systems require more frequent attention than others. A suitable maintenance programme should take account of manufacturer guidance, inspection findings and relevant safety requirements.

Warning signs can include frequently tripping circuit breakers, flickering lights, unusual buzzing noises, overheating, burning smells or equipment that stops working unexpectedly. These symptoms should be investigated promptly, particularly where there are indications of overheating or electrical damage.

Repeated circuit breaker tripping can result from overloaded circuits, faulty equipment, short circuits or earth faults. The protective device may be operating to prevent danger. A qualified electrician should investigate the cause rather than repeatedly resetting the breaker without identifying the problem.

LAIRD Electrical provides commercial electrical fault finding to investigate problems that occur irregularly or are difficult to identify. Intermittent faults can have several causes, including loose connections, deteriorating components or faulty equipment. Appropriate investigation and testing help determine the likely cause.

Yes. LAIRD Electrical carries out commercial distribution board and circuit repairs, subject to the condition and suitability of the existing equipment. Work may involve investigating faulty circuits, replacing damaged components or recommending upgrades where repair is not appropriate.

Some commercial electrical repairs can be arranged around normal operations, depending on the fault and affected circuits. Other work requires equipment or parts of the installation to be safely isolated. Safety and access requirements determine whether operations can continue during repairs.

If you notice signs of a dangerous electrical fault, such as smoke, burning smells, exposed live parts or overheating, keep people away from the affected area and stop using the equipment. Arrange assessment by a competent electrician. If there is a fire or immediate danger, follow emergency procedures and call 999 where necessary.

Planned maintenance can help reduce the risk of unexpected electrical failures by identifying deteriorating connections, damaged equipment and other developing problems. It cannot prevent every power interruption, but it can improve the reliability of a commercial electrical installation.

Commercial electrical maintenance and repair costs depend on the size and condition of the installation, the work required, fault complexity and any replacement components. LAIRD Electrical can discuss your requirements and provide information about the likely scope and cost of the work.

Solar photovoltaic (PV) panels convert daylight into electricity that can be used in your home or business. The panels generate direct current (DC), which an inverter converts into alternating current (AC) for your appliances and electrical installation.

Suitability depends on your roof condition, available space, orientation and shading, along with how much electricity you use. We assess all of these before recommending a system, so you know whether solar PV is a practical option for your property.

Yes. Solar panels still generate electricity from daylight on overcast days, although output is lower than in direct sunlight. Generation also varies through the year, with more produced in spring and summer.

Savings depend on system size, roof orientation, shading, your electricity tariff and how much of the generated electricity you use yourself. We explain what is realistic for your property rather than quoting a one-size-fits-all figure.

Surplus electricity is exported to the grid unless you have battery storage to save it for later. Depending on your energy supplier and system, you may be able to receive payment for exported electricity through an export tariff.

Many domestic roof-mounted systems fall under permitted development, but restrictions can apply to listed buildings, conservation areas and some flat roof or ground-mounted installations. If you are unsure, it is worth checking with your local planning authority before work begins.

Yes. Grid-connected solar PV and battery systems must be notified to, or approved by, your Distribution Network Operator (DNO). Smaller systems are usually notified under G98, while larger systems need approval under G99 before they are connected. We handle this as part of the installation.

Yes. Solar PV can be paired with compatible battery storage and EV chargers so more of the electricity you generate is used on site. Planning these together from the start makes integration simpler and more cost-effective.

Solar PV systems need relatively little maintenance. Keeping an eye on generation through system monitoring, occasional visual checks and periodic inspection of the electrical installation help keep the system performing as expected.

A battery stores electricity so you can use it later. It can save surplus solar generation from the day for use in the evening, and compatible systems can also charge from the grid during cheaper off-peak tariff periods.

No. A battery can be installed on its own and charged from the grid during lower-cost tariff periods. Pairing it with solar PV lets you store and use more of the electricity you generate yourself.

The right capacity depends on how much electricity you use, when you use it, the size of any solar PV system and your tariff. We review your usage before recommending a battery, so you are not paying for capacity you will not use.

In many cases, yes. We check your existing inverter and equipment for compatibility and advise on the most suitable way to add storage to your system.

Not automatically. Most battery systems shut down during a power cut for safety reasons. Some systems offer backup power, which needs specific equipment and wiring, so let us know if this is important to you.

Batteries are usually installed in a garage, utility room or outbuilding, depending on the manufacturer’s requirements. We consider ventilation, temperature, access and fire safety when choosing a suitable location.

Lifespan depends on the battery type, how often it is charged and discharged and the manufacturer’s specification. Most manufacturers provide a warranty covering a set number of years or charge cycles, which we will talk you through.

Mechanical ventilation with heat recovery (MVHR) provides continuous, controlled ventilation. It extracts stale, moist air from rooms such as kitchens and bathrooms and supplies fresh, filtered air to living spaces, while a heat exchanger transfers heat from the outgoing air to the incoming air.

MVHR works best in well-insulated, airtight homes, such as new builds, extensions and energy-efficient renovations. In draughty properties, much of the benefit can be lost through uncontrolled air leakage.

MVHR continuously extracts moist air from wet rooms, which helps manage humidity and reduce the conditions that lead to condensation. Results depend on correct design, installation and how the property is used.

It can, but retrofitting needs space for the unit and suitable routes for ductwork, which can be disruptive. It is often most practical during a major renovation or extension.

No. MVHR reduces the heat lost through ventilation, but it is not a heating system. You will still need a heating source for your home.

A correctly designed and commissioned system should run quietly. Duct sizing, unit location, silencers and balancing the airflow during commissioning all help keep noise to a minimum.

Filters need cleaning or replacing regularly, typically every few months depending on the system and its location. The unit and ductwork should also be checked periodically to keep airflow and efficiency where they should be.

Yes. We install workplace and commercial EV charging for staff, visitors and fleet vehicles, with chargers selected to suit your site, vehicles and electrical supply.

It depends on your existing supply capacity and demand. We assess this first. Dynamic load management can adjust charging power so the available supply is not exceeded, and in some cases a supply upgrade may be needed.

A system that monitors electrical demand and adjusts EV charging power to help prevent the property’s available electrical supply capacity from being exceeded. It allows more chargers to run from the same supply.

Many smart commercial chargers support user access control, usage reporting and tariff settings, so you can manage charging for staff, visitors or the public.

This depends on how many vehicles need charging, how long they are parked, daily mileage and your plans for growth. We can also install cabling and capacity with future expansion in mind.

Government funding schemes for EV charging change over time and eligibility criteria apply. We recommend checking the current position on GOV.UK, and we can talk you through how any funding might affect your project.

We install commercial solar PV, battery storage, workplace EV charging and MVHR systems, tailored to your premises, energy use and operational needs.

We review your electricity usage, peak demand and operating hours to establish suitable solar generation, battery capacity and EV charging requirements for your business.

Generation and storage equipment connected to the grid must meet your Distribution Network Operator’s (DNO) requirements. Smaller systems are usually notified under G98, while larger systems need G99 approval before connection. Larger EV charging installations may also need a supply upgrade.

New circuits and electrical alterations are certified with an Electrical Installation Certificate (EIC) to BS 7671. You will also receive commissioning records and the relevant manufacturer documentation for your system.

We consider fire risks associated with solar PV equipment, battery storage locations and electrical connections, along with safe access for maintenance and emergency services.

Yes. We plan installations around your operating hours wherever possible and agree a schedule with you in advance to keep disruption to a minimum.