Collection: Power & Distribution

Our power and distribution range covers practical electrical solutions for domestic, commercial and construction site applications.

From consumer units and cable reels to 110V site transformers, you'll find reliable products from established UK manufacturers for fixed installations, temporary power and everyday electrical work.

Whether you're replacing existing equipment, setting up a construction site or extending your electrical supply, use the categories below to find the right solution for your project.

Explore our power & distribution solutions

Consumer Units

Cable Reels and Extension Leads

110v Site Transformers

Use cases

Protecting and supplying power in domestic properties

Consumer units and related electrical equipment for new installations, replacements and upgrades in homes and residential properties. Choose products appropriate to the existing installation and the requirements of the electrical system.

Electrical distribution in commercial premises

Products for offices, shops, workshops and other commercial environments where reliable electrical distribution and circuit protection are required. Consider the installation requirements, available space and existing electrical system when selecting equipment.

Construction site power

110V site transformers and associated equipment provide reduced-voltage power for construction sites and other temporary work environments. Choose a transformer based on the equipment being powered, required capacity and site conditions.

Powering 110V tools and site equipment

Portable and higher-capacity 110V transformers for supplying power to site tools, lighting and other temporary electrical equipment. Consider the total load, transformer rating, number of outlets and required cable runs.

Extending electrical power safely

Cable reels, extension leads and related equipment for supplying electrical equipment where the available socket outlet is some distance from the point of use. Select equipment appropriate to the load, cable length and environment.

Protecting and managing electrical supplies

Consumer units, distribution equipment, surge protection and other control products for managing and protecting electrical supplies. Product availability will expand as CMD Online develops its Power & Distribution range.

Choosing the right product

Not sure which power and distribution product you need?

Start by considering the installation, the equipment you're powering and the electrical requirements of the project. The following guide can help you identify the right type of product before you buy.

For a permanent or temporary installation

Consider where the equipment will be used and whether the installation is permanent or temporary. Indoor domestic and workshop applications may have different requirements from construction sites and other outdoor environments. Check the required IP rating where equipment may be exposed to water, dust or other demanding conditions.

Choose the correct voltage

Standard UK electrical equipment typically operates at 230V/240V, while 110V reduced-voltage equipment is commonly used for construction site tools and temporary lighting. Check the voltage required by the equipment before selecting a transformer, cable reel, extension lead or other power equipment.

Check the load and capacity

Make sure the transformer, cable, reel or extension lead is rated for the equipment you intend to power. Site transformers are rated in kVA, while cables and extension equipment have current and power ratings. Consider the total load and whether equipment will be used continuously or intermittently, and never exceed the rated capacity.

Consider circuit protection

For consumer units and other distribution equipment, the required protection will depend on the installation and the type of electrical loads being supplied. RCD and RCBO selection should take account of the equipment being connected, the installation requirements and the applicable edition of BS 7671.

Check the installation requirements

Electrical distribution equipment should be selected and installed in accordance with the requirements applicable to the installation. If you're unsure which consumer unit, protection device, transformer or other equipment is appropriate, speak to a suitably qualified electrician before purchasing.

Frequently asked questions

What is a 110V site transformer used for?

110V site transformers provide reduced-voltage power for suitable tools, lighting and other electrical equipment, particularly on construction sites and temporary installations. Choose a transformer with an appropriate power rating for the equipment being supplied.

How do I choose the right 110V site transformer?

Consider the equipment you need to power, its total load, whether the load is continuous or intermittent, and the number of outlets required. Site transformers are rated in kVA, so make sure the transformer has sufficient capacity for the equipment you intend to use.

What is the difference between a 110V and 240V cable reel or extension lead?

110V and 240V equipment is designed for different electrical supplies and uses different plug and socket configurations. 110V equipment is commonly used for construction site tools and temporary lighting, while 240V reels and extension leads are widely used for domestic, workshop and general applications. Always match the equipment to the supply voltage.

What size consumer unit do I need?

The correct consumer unit depends on the installation, the number and type of circuits, the required protective devices and the characteristics of the electrical system. If you're replacing an existing consumer unit, check the existing installation and consult a suitably qualified electrician if you're unsure which configuration is required.

Do I need surge protection or a particular type of RCD?

The appropriate protection depends on the installation and the electrical equipment being supplied. Requirements under BS 7671 can vary depending on the installation and connected loads, so the correct RCD, RCBO and surge protection equipment should be selected by reference to the installation requirements and manufacturer's instructions.

Can CMD Online help me choose the right power and distribution equipment?

Yes. We can help with product information and specifications, including voltage, power ratings, dimensions, connections and available configurations. For electrical design, installation or determining the protective requirements of an installation, you should consult a suitably qualified electrician.

Brands we trust

Red Arrow

Red Arrow supplies a wide range of LED lighting for commercial, industrial and site applications, including a strong range of 110V site lighting. The range also includes emergency lighting, outdoor fittings and selected domestic products, supported by UK-based technical and lighting design expertise.

Connexion Electrical

Connexion Electrical supplies a broad range of electrical and site equipment, with particular strength in 110V site power, transformers, cable reels, extension equipment and LED site lighting. Its range is aimed primarily at trade, construction and commercial applications.

Briticent

Briticent is Deta Electrical’s dedicated site electrics brand, supplying rugged 110V LED floodlights, plasterer’s and task lights, festoon lighting and heavy-duty site transformers. The range is designed for demanding construction and temporary work environments where robust, practical lighting and power are essential.