Commercial Electrical

Commercial Electrical

Milton Keynes Group Electrical
Commercial Electrical Services

Make sure you pick an electrician with the necessary experience and credentials for the job if you’re looking for one to handle commercial installation or maintenance work.

The distinctions between domestic and commercial electrical work are very significant, despite the many similarities. Here is a guide to help you understand what commercial electrical work entails and why this kind of work calls for a specialised contractor.

Domestic vs. Commercial Electrical Work

Even though you may not think there are many distinctions, there are many differences between electrical work carried out in commercial and residential premises.

Commercial electrical work involves significantly more complex design, installation, and legal requirements than straightforward home repairs and installations. Therefore, hiring a commercial electrician will cost more, but it is a crucial investment in the facility’s safety and regulatory compliance.

The main distinctions between residential and commercial electrical work are listed below.

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The Equipment

Domestic electrical installations are typically fairly simple and only require power for low-voltage appliances, lights, and heating. There is no need to provide exceptional high voltage requirements or to power complicated machinery.

The requirements of a factory that operates continuously and uses a wide variety of equipment necessitate a significantly more complex design for the electrical installation. When deciphering designs, they might also need to have a working grasp of more unusual electrical wiring symbols.

Accessibility to the wiring and circuits throughout the building for maintenance is another factor. To protect occupants, practically all of this is totally concealed within domestic property’s walls, floor, and ceilings. Therefore, it’s possible that a household electrician won’t have the expertise to give this kind of access, which is necessary for routine maintenance in challenging situations.

Distribution of Loads

Due to their far lower energy needs than commercial buildings, almost all residential properties run on single-phase electricity. Since this is a secure and convenient approach to distributing the required power throughout the building, single-phase cables have just one live wire.

On the other side, three-phase electricity is typically used in commercial electrical wiring. As a result, equipment that uses a lot of electricity can get additional current because the cables now have three live wires instead of only one. A three-phase system is not only capable of producing more power, but it is also significantly more efficient than a single-phase system, which is crucial for commercial applications.

Who can install Commercial Electrical Systems

You must hire a certified commercial electrician when engaging a contractor for commercial electrical work, preferably one with approved training in any speciality areas that may be pertinent to your project.

For instance, if you need a complete lighting system designed and installed, be sure the person or business you choose has experience with projects like this in their portfolio. Hiring a commercial electrician with substantial knowledge in a related area will be quite beneficial if your business works with uncommon or dangerous equipment.

Anyone interested in working as an electrician must possess a Level 3 qualification that is recognised by the industry.

Less stringent requirements apply to work as a household electrician or electrical installer than to commercial jobs. Here is a brief summary of the various sorts of credentials an electrician may possess.

Domestic Electrician’s Qualifications

A domestic electrician might hold one of the following credentials and have finished a three- to four-year apprenticeship:

  • Level 3 technical and vocational qualification
  • Level 3 Diploma

A domestic installer shall have one of the following credentials in addition to a current Level 3 Award in the Requirements for Electrical Installations (18th Edition):

  • Level 3 Award in the Initial Verification and Certification of Electrical Installations
  • Level 3 Award in Approving Electrical Work in Dwellings in Compliance with Building Regulations

Commercial Electrician’s Qualifications

Those who want to work in the commercial sector must complete extra training programmes in addition to the basic requirements for licensure as an electrician.

In addition to giving them all the information they require regarding legal and regulatory standards, this enables them to acquire the specialised knowledge needed for this kind of employment.

Among the extra courses, a commercial electrician could enrol in are the following:

  • City & Guilds 2357 NVQ Level 3 in Electrical Installation (Buildings and Structures)
  • City & Guilds 2391-52 Initial & Periodic Inspection and Testing Qualification
  • EAL Level 4 Award in the Design and Verification of Electrical Installations
  • Portable Appliance Testing (PAT)

accreditations of a Commercial electrician

Many commercial electricians hold specific credentials in addition to being registered with accrediting organisations that are acknowledged in the field.

This offers the chance for a third-party review of the contractor’s services and helps reassure clients that the contractor is committed to providing a safe and trustworthy service.

Milton Keynes Electrical Group’s long list of accreditations and memberships in organisations with a focus on the industry serves as evidence of our commitment to our clients.



The provision of electrical installation services to businesses across various industries makes up a sizable portion of a commercial electrician’s job description.

A commercial electrician may be hired for the following electrical installation services.

Lighting, including improvements to existing installations

Lighting systems are a necessity in a building, but they may be very complex, particularly in bigger facilities.

A commercial electrician is the best option whether you need new lights installed or your present lighting system completely renovated. They will not only be knowledgeable about the safety standards for your use case, but they will also be able to give you the most cost-effective lighting units and installation designs for your business.

EICR – Electrical installation condition reports

Every electrical system has a limited lifespan, so it’s important to frequently inspect them to make sure they’re in good shape and safe to use.

You will receive a report from a commercial electrician outlining any suggestions for enhancing the safety and effectiveness of your electrical installation. You can prevent future harmful situations and downtime brought on by electrical issues or defective equipment by doing routine inspections. In order to lower insurance costs and compensate for damages, reporting is crucial for demonstrating your diligence in the event of an incident.

Containment and Distribution

Commercial facilities can have very high power requirements, so it’s crucial to make sure the individuals in charge of the electrical installations have experience with these higher loads.

A commercial electrician is capable of handling these complicated electrical requirements, from making sure the proper level of power is accessible to your premises from the grid to safely distributing it throughout the facility to where it is needed. Additionally, they will be able to ensure that all live wires are securely contained to avoid injuries and to provide the required access for routine or urgent maintenance.

Periodical test and inspection

Electrical components should be regularly tested and inspected to make sure everything is in working order and safe for use.

Your facility will remain safe and in compliance with all applicable regulations if you hire a commercial electrician with the skills and credentials necessary to perform routine testing and inspections. They will be able to evaluate your current electrical installation, including the wiring, lighting, and equipment, and they will be able to make recommendations for ways to increase efficiency and safety whenever possible.

Design installation and maintenance of Fire Detection equipment

Commercial structures and homes with several occupants are legally required to have a fire detection system. There is no justification for working without a skilled electrical contractor when it comes to issues involving personal safety.

For the general safety of your personnel and facility, working with a commercial electrician who can design and install a reliable fire detection system is crucial. You can count on them to be knowledgeable about the most recent Health & Safety regulations and to have expertise in completing installations of a similar nature on other sites.

Renovations of Electrical Systems

An extensive project that is typically outside the competence of a household electrician is renovating the electrical systems in an existing building.

During this process, the building’s structural integrity and the safety of any modifications are ensured while the current installation is evaluated, old electrical fittings are removed, and new ones are installed. A commercial electrician must adhere to all relevant Health & Safety regulations for both electrical installation and your industry while designing a new installation to ensure that it is both modern and energy-efficient.

New Installations, Design & Build

A certified commercial electrician is frequently hired by home builders, property developers, and architects to design and install the electrical system in one or more newly constructed properties.

This necessitates having the ability to create the installation from scratch as opposed to enhancing, maintaining, or fixing an existing system. An electrician must possess an in-depth knowledge of the design process, load specifications, and safety standards to do this. To save time later, it’s usual for construction firms to collaborate with a preferred electrical installer, therefore it’s critical to choose a trustworthy contractor.

Electrical installation certificates

An electrical installation certificate (EIC) must be given after the installation of any new electrical equipment. This certificate, which is significant for your Health & Safety records, certifies that the new installation, change, or addition was safe to use at the time it was put into operation.

Always hire a certified contractor for electrical installations to guarantee that you get the correct documents. You can be confident that all work is up to the high standards anticipated by the sector because the accrediting organisation vets and inspects members.

Other services provided by Commercial Electricians

While a commercial electrician’s day often involves performing electrical installations, there are other services they offer and fundamental abilities they must possess.

Commercial electrical codes (UK)

In every industrial or commercial setting, health and safety are of the highest importance, and the potential risks of electricity called for even tougher rules.

In order to keep workplaces safe, it’s crucial to engage with an electrical contractor who is knowledgeable about the commercial electrical standards and regulations that are in place in the UK. Any electrician—commercial or residential—must adhere to the law regarding health and safety. For industrial or commercial buildings, you can anticipate a commercial electrical contractor to have more in-depth and sector-specific knowledge.

Electrical Certificate for Commercial Installations

All electrical systems should be inspected and tested on a regular basis, often every three to five years, because they deteriorate over time.

An electrician ought to offer a commercial electrical certificate after the examination, describing any:

  • Outdated features that no longer comply with safety regulations
  • Defects and deterioration in the electrical equipment
  • Dangerous situations or equipment on the verge of malfunction
  • Damage to the electrical systems

Commercial electrical certificates are not only required by law, but they also aid in defending a business owner in the event that an injury is caused by faulty electrics.

Understanding Commercial Electrical Installations

As above, commercial electrical installations can be considerably more complex than domestic ones.

Commercial installations frequently need high power loads in addition to coping with much larger spaces. As a result, a commercial application is typically designed significantly differently, with a focus on safety, effectiveness, and future changeability.

Commercial Electrical Distribution

Typically, a domestic house has just one electrical consumer unit, making it simple for the homeowner to reset tripped electrical breakers.

Multiple distribution boards are frequently needed for commercial applications, making it simpler to manage all of the facility’s electrical connections. To help boost safety and efficiency while reducing downtime, it is crucial to understand how and where to install these panels as well as how to make them easily accessible in the event of a power outage.

Three-phase electrical systems

Since single-phase and three-phase electrical systems differ from one another, it’s critical that a commercial electrical contractor possesses the necessary training, expertise, and credentials to work with three-phase electrical installations.

These devices are far more potent and riskier than their domestic counterparts since they use three live wires rather than only two. A commercial electrician must be hired for any work requiring three-phase systems because a household electrician often only has competence with single-phase systems.

Commercial Electrical Plans

Even when they are simple, electrical plans can be tough to understand, but commercial electrical designs are particularly challenging. They demand reading comprehension:

  • Architectural floor plans detail the functions of the various rooms.
  • Wiring diagrams display the location of each wire in relation to the electrical panel, as well as to the equipment they are connected to.
  • Various parts of the overall design are represented by electrical and engineering symbols.
  • Phasing refers to putting the right equipment in a group on a single breaker for operation and maintenance efficiency.
  • Plans for the lighting, displaying the location and types of fixtures to be utilised. This frequently differs from the wiring layouts and needs an understanding of lighting symbols.
  • The OEM specification manual that goes with the electrical plans contains information on the materials to be utilised and the electrical specifications.


It makes sense that hiring a commercial electrician will be more expensive than hiring a household electrician. I hope reading this post has made it clear to you why that is.

It’s critical to consider this expense as a crucial investment in the security of your facility since, as a business owner, you have a responsibility of care to everyone on your property. Any additional costs will be much outweighed by the consequences of failing to hire an electrician who is fully qualified.

The basic minimum you can do to increase workplace safety in your facility is to make sure you only work with electrical contractors who are qualified and experienced in performing commercial electrical services, and who supply all relevant certifications as standard.


All aspects of commercial electrical work are our areas of expertise at Milton Keynes Electrical Group.

Our fully certified commercial electricians have the experience to guarantee that your building is safe, effective, and compliant for electrical installations as well as routine electrical maintenance.

From updating electrical wiring and data connections in a prison to delivering a full electrical installation for a new retail outlet, we’ve offered pretty much any and all electrical services. Even as experts in solar energy, we have participated in conservation programmes.

Contact Milton Keynes Electrical Group if you want to work with an established commercial electrical contractor. We are committed to offering a full range of commercial electrical services that are always underpinned by care and attention, which enables us to develop long-lasting relationships with our clients.

Our Electrical Services
For commercial customers, our skilled commercial Engineers can handle a range of electrical services. Our electricians make every effort to disrupt your business as little as possible and to leave it spotless following their visit. Please view our residential electrics webpage for more information if you require an electrician for your home.
  • Emergency 24 Hour Service
  • Additional Sockets
  • Audio Visual
  • CCTV
  • Circuit Board Installs
  • Circuit Breaker Repairs
  • Complete & Partial Rewiring
  • Data Networks & Cabling
  • Door Entry Systems
  • Earthing Ports & Bonding
  • EICR Reports
  • Electric Heaters & Radiators
  • Electrical Fault Finding
  • Electrical Repairs
  • Emergency Lighting
  • External Lighting
  • Fusebox Replacements
  • Fused Spurs
  • Heating Controls
  • High Voltage
  • Immersion Heaters
  • Lighting Design, Installation & Repair
  • Low Voltage Lighting
  • Portable Appliance Testing (PAT)
  • Rewiring
  • Security Lighting
  • Sockets
  • Switches
  • Testing and Inspections
  • Transformers
  • Tripping Circuits
  • Water Heaters