When the going gets tough, the tough need good footwear. That’s why Bobcat is giving readers the chance to win one of two pairs of these high-performance, superior-comfort Dakota boots with an RRP of up to £125 each.

Launched by Overland Shoes, the experts behind some of the world’s most iconic footwear brands, the new-to-market Bobcat Safety Footwear range sets a new standard in durability, comfort and style for work shoes and boots.

The Dakota safety boot is one of the most popular in the range, built to deliver all‑day performance and protection shift after shift. At its core lies Bobcat’s advanced Leaf‑Spring Technology insole, engineered to return energy and reduce fatigue.

For the ultimate performance day-in day-out, the Dakota also features a rugged triple-density outsole, ladder grip, scuff cap resistance and fuel oil resistance. Meanwhile, an ankle zip ensures easy on-off convenience, while a hiker-style lace system delivers a secure, supportive fit. Coupled with a bold, stylish design, luxury textiles and breathable linings, the end result is the ultimate choice for busy electricians looking to move forward in comfort and confidence.

For more information please visit: www.bobcat-footwear.com

HOW TO ENTER

To be in with a chance of winning, simply choose the correct answer from following choices:

Q. What is the name of one of the most popular new safety boots now available from Bobcat Safety Footwear?

A) Dakota

B) Detroit

C) Dallas

Simply fill out the form below and tell us your answer for the chance to WIN!

Deadline for entries 31/08/26

The post COMPETITION: Win a pair of safety work boots courtesy of Bobcat appeared first on Professional Electricians Wholesaler.

In this month’s Face to Face we speak with Glenn Ward, General Manager of Dunasfern, and find out more about the business and the industry sector it operates in.

Q. Can you tell us a bit about Dunasfern and what the company offers?

Dunasfern has been serving the data and communication market for over 43 years and has evolved into one of the leading suppliers of data infrastructure products across the UK. Breadth of product range and being commercially competitive are essential and a given in today’s world but at Dunasfern, the real benefit and differential we offer, is the market leading customer service and focus we dedicate to every customer and every order.

Q. How has the cabling solutions industry changed since Dunasfern first entered the market?

Since the birth of LAN data cables and the growth in networking computers, we have seen a massive increase in data demand and speed of transmission. This need to transmit more data and faster has continued and accelerated since the pandemic in 2020 with more hybrid working, streaming meetings almost continually and with the evolution of AI, this demand for data capacity and speed will only continue to grow.

Q. What products and solutions are popular with customers at the moment?

Within the whole communications spectrum, LAN data cables represent the largest volume and value, and we are continuing to see demand migrate from Cat5e to Cat6 and even Cat6a. There is still significant demand for low data use within CCTV environments and Cat5e is a perfect choice for this type of solution. Within the solar market, we are seeing Cat5e shielded SWA armoured cables installed to feed the CCTV cameras around the site. Further to this, we are seeing increasing demand for Belden type equivalent cables, alarm cables and even coax and telephone cables. The old 1308 BT type telephone cables are now being used in door entry systems due to them being a really cost-effective solution.

Q. What markets does Dunasfern operate in and how do requirements differ depending on environment?

Dunasfern is the leading supplier of data networking products to electrical wholesalers and in this market demand is mainly centred around Cat5e and Cat6 installations using PVC, LSZH and PE insulation and mostly unshielded. In a harsher industrial installation and in areas where power cables run close by, a shielded cable would be required to minimise data interruption. Coupled with this is the supporting infrastructure connectivity products such as plugs, modules, faceplates cabinets, wall boxes and all products within, such as patch panels power distribution, patch leads, etc. The demand for fibre cable installations is quite low but in larger commercial and data centre installations, fibre is the cable of choice rather than copper.

Q. Has the growing home automation market resulted in increased demand for structured cabling in homes?

The biggest increase in demand at home has followed on from the pandemic in 2020, with more people working from home, streaming meetings, whilst the children are streaming learning platforms or gaming. This has significantly increased demand for data but with increased performance from Wi-Fi networks and routers, the need to install data cables at home is currently quite low, unless the home is very large. This data demand is set to continue to increase with the development of AI, so it maybe the case that a need for data cables installed within homes will be required.

Q. What are Dunasfern’s plans for the year ahead?

Our plan is to continue to work proactively with our electrical wholesale partners, to help bring greater awareness of the wide range of data networking products available from them. We do this with a range of point-of-sale merchandise, a training programme designed to improve awareness within the branch staff to help them in their discussions with their customers and bespoke promotional activity at branch level. As our business continues to grow, we are always looking to strengthen the team and increase the resources to support our wholesale partners.

At Dunasfern, we want to continually strive to improve the proactive support we offer across customer service, product availability and commercial support. We take nothing for granted and our dedicated account managers are always on hand to discuss ways to improve our collaborative approach.

Find out more about Dunasfern here

Catch up on previous ‘Face to Face’ articles here

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As UK summers grow increasingly hotter, electrical wholesalers are seeing a clear shift in buying habits. Cooling solutions, once considered seasonal, are now essential across both domestic and commercial markets. We find out how Prime Electrical Distributors and Devola are helping wholesalers meet surging demand.

With forecasts suggesting that 2026 could be among the hottest summers on record – and conditions already warmer than average – the opportunity for wholesalers to expand into cooling has never been greater.

Meeting demand

Prime Electrical Distributors (PED), alongside its exclusive in-house brand Devola, is helping wholesalers meet this demand with a comprehensive, high-quality product offering backed by strong service and availability.

Established in 2009, Devola has become a fast-rising name within the HVAC sector. Its reputation is built on delivering reliable, well-designed products at competitive price points, without compromising on quality. This balance is particularly important for wholesalers looking to offer dependable solutions while remaining competitive in a price-sensitive market.

Today, Devola’s range includes over 100 products available from its UK distribution centre. The portfolio covers portable air conditioners, dehumidifiers and a wide variety of fans, giving wholesalers a complete solution for cooling requirements. The range continues to grow, with new products – including hand dryers and towel rails – set to launch later this year.

The need for cooling is being driven by changing environmental conditions. UK temperatures continue to rise year on year, with heatwaves becoming more frequent and intense. These rising temperatures have a direct impact on working and living environments. In commercial settings, excessive heat can lead to physical strain such as heat exhaustion and cramps, while also reducing concentration and productivity. As a result, businesses and organisations are placing greater emphasis on maintaining comfortable indoor climates.

This shift is driving demand across multiple sectors, including education, local authorities, hospitality and office environments. For electrical wholesalers, it presents an opportunity to provide practical solutions that address a growing and immediate need.

Air conditioning

Devola’s range of portable air conditioners is a key part of this offering. With more than 10 models available in both white and black finishes, the range combines strong performance with modern design. These units are ideal for spaces where permanent installation is not practical, offering flexible, effective cooling.

Portable air conditioners work by drawing warm air into the unit and passing it over refrigerant-filled coils, which absorb heat. The cooled air is then circulated back into the room, while hot air is expelled through a hose connected to a window. This simple but effective process allows users to quickly create a comfortable environment.

A major advantage of Devola’s air conditioning range is the inclusion of smart technology across all models. Users can control their units remotely, set schedules, and optimise performance to suit their needs. As smart home and workplace solutions become more common, this feature adds real value for customers and an additional selling point for wholesalers.

Alongside air conditioning units, Devola offers a wide selection of fans. The range includes high-velocity floor fans, desk fans, pedestal fans and tower fans, ensuring there is a solution for every application and budget. This breadth of choice allows wholesalers to meet diverse customer requirements, from personal cooling to larger-scale airflow solutions.

Partnership

The strength of the Devola brand is further enhanced by its exclusive partnership with Prime Electrical Distributors. PED has built a strong reputation within the industry for reliability, service and customer support, making it a trusted partner for wholesalers across the UK.

All Devola cooling products are available for next-day delivery nationwide, enabling wholesalers to respond quickly to spikes in demand, particularly during peak summer periods. This level of availability is essential in a fast-moving market, where timing can make a significant difference to sales. PED has also invested in expanding its UK sales team to support the growing demand for Devola products. This ensures that wholesalers have access to the expertise and support they need to make the most of the opportunity.

Electrical wholesalers can also benefit from becoming approved Devola stockists. This provides access to regular promotional offers and preferential trading terms, helping businesses maximise profitability while remaining competitive.

As the UK continues to experience rising temperatures, the demand for cooling solutions will only increase. For electrical wholesalers, this represents a clear opportunity for growth.

With its established reputation, expanding product range and commitment to quality, Devola – supported by Prime Electrical Distributors – offers a complete and reliable solution…

For further details, click here

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LEDVANCE highlights some of its initiatives that are helping to create a lasting impact beyond the product.

In the electrical and lighting sector, it’s easy to focus purely on performance metrics – efficiency, output, controls and compliance. These are, of course, critical. But increasingly, the industry is recognising that its role stretches far beyond specification sheets and installations. The most forward-thinking companies are those finding ways to connect with communities, inspire future generations and demonstrate real social value.

A standout example of this in action comes from LEDVANCE and its recent player escort initiative with SV Werder Bremen. While the campaign itself has now concluded, it serves as a powerful example of how a lighting manufacturer can step outside its traditional remit to create something genuinely memorable.

The concept centred around one of football’s most iconic moments: walking onto the pitch alongside professional players. For the February 2026 Bundesliga fixture between Werder Bremen and FC Bayern Munich, LEDVANCE offered 11 children the chance to experience exactly that – but with a creative twist that tied directly back to its core business.

Rather than running a standard prize draw, the company invited children aged six to nine to design and create their own football-themed lamps. Whether painted, crafted or drawn, each entry was a reflection of imagination, individuality and the connection between light and sport. It was a simple idea, but an effective one: encouraging creativity while subtly introducing younger audiences to the concept of lighting design.

Stepping into the spotlight

A panel of judges, including members of the LEDVANCE marketing and sales teams, selected the most imaginative entries. The winners were then given the opportunity to step into the spotlight in a way few could ever forget.

On matchday, those selected walked hand in hand with professional players onto the pitch, in front of thousands of fans. Each child received a full player escort kit to keep, along with tickets for an accompanying adult – ensuring the experience could be shared with family. The entire day was captured on film, creating a lasting reminder of what, for many, will be a once-in-a-lifetime moment.

While the experience itself is extraordinary, what makes this initiative particularly compelling is the thinking behind it. LEDVANCE didn’t simply attach its name to a sporting event; it created a meaningful engagement that links brand, creativity and community.

Importantly, this was not an isolated effort. The company has a track record of using its partnerships in football to deliver wider social value. Previous initiatives have included working with children from the Caritas Youth Care Center St. Vinzenz in Landshut, offering similar matchday experiences to those who may not otherwise have access to them. By continuing this approach, LEDVANCE is demonstrating a long-term commitment rather than a one-off campaign.

At the same time, the initiative reinforces the company’s technical credentials. As the official lighting partner for Werder Bremen, LEDVANCE has played a key role in delivering modern, energy-efficient lighting at the club’s home ground, the Weserstadion. Beyond this, it has contributed to major projects such as the BayArena, home of Bayer Leverkusen, as well as a wide range of smaller-scale sports facilities.

This dual focus – combining engineering expertise with community engagement – is increasingly relevant across the electrical wholesale sector. Customers and partners are no longer looking solely at product performance. They are also asking what companies stand for, how they contribute to society, and whether they are investing in the future.

For wholesalers and contractors alike, there is a clear takeaway. Lighting is not just functional; it shapes experiences. From grassroots sports pitches to elite stadiums, the environments we help create have a direct impact on how people feel, interact and remember moments.

Creativity in outreach

Initiatives like the LEDVANCE player escort competition also highlight the value of creativity in outreach. By asking children to design their own lamps, the company moved beyond passive participation and encouraged active engagement. In doing so, it planted a seed – introducing the idea that lighting can be imaginative, expressive, and even fun.

There’s also a broader message here about accessibility. While large stadium projects often dominate headlines, LEDVANCE’s portfolio spans facilities of all sizes, ensuring that local clubs and community venues can benefit from the same level of innovation and efficiency. This inclusive approach mirrors the ethos behind the competition itself: opening doors and creating opportunities.

Ultimately, what sets this initiative apart is its balance. It celebrates technical excellence in sports lighting while simultaneously delivering a human story – one centred on excitement, creativity and inspiration.

For an industry sometimes perceived as purely technical, that’s an important reminder. Behind every installation is an opportunity to make a difference, whether that’s improving sustainability, enhancing wellbeing, or simply creating moments people will never forget.

And in this case, that moment was simple but powerful: a child stepping onto a football pitch, under world-class lighting, hand in hand with a hero.

Read more about the projects here

Catch up on previous ‘Soapbox’ articles here

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Clear guidance on inspection regimes, evolving terminology and practical considerations is helping wholesalers and contractors navigate electrical equipment safety with confidence, says Steve Dunning, Managing Director at Martindale Electric.

Electrical equipment safety remains a fundamental responsibility across every workplace. Yet confusion still exists around what needs to be tested, how often, and even what the process should be called. While Portable Appliance Testing (PAT) is a familiar term, the introduction of Electrical Equipment Testing (EET) reflects a broader, more accurate understanding of today’s requirements.

At its core, the requirement is straightforward. Under the Electricity at Work Regulations (1989), any electrical equipment that could cause injury must be maintained in a safe condition. PAT emerged as an established method of meeting this duty, focusing on the inspection and testing of portable electrical appliances to ensure they are safe for continued use.

However, the industry’s shift towards the term Electrical Equipment Testing is more than just a rebrand. Introduced in the fifth edition of the IET Code of Practice for In-Service Inspection and Testing of Electrical Equipment, the updated terminology addresses a long-standing misconception that only smaller, movable items require testing. In reality, the scope extends far beyond traditional ‘portable’ devices.

EET better reflects the full range of equipment that must be considered, including a wider variety of mains powered appliances and equipment. This could encompass anything from laptops and kettles through to vending machines, refrigeration units and even larger industrial equipment. While PAT remains widely used in conversation and training, understanding EET ensures that no equipment category is overlooked.

Frequency 

One of the most common questions surrounding PAT or EET testing is how often it should be carried out. Unlike some regulatory requirements, there is no universal testing interval defined in law. Instead, the Health and Safety Executive (HSE) recommends a risk based approach, often interpreted in practice as annual testing, but this is only a guideline.

The appropriate frequency depends heavily on both the type of equipment and the environment in which it is used. For example, a power tool operating on a construction site is subject to significantly greater wear and risk than a desk lamp in a hotel room. As such, it requires more frequent inspection and testing.

This flexibility can make compliance feel ambiguous for employers. While PAT or EET testing itself is not explicitly mandated, the legal obligation to maintain safe equipment is absolute. In practical terms, regular inspection and testing provide a recognised and defensible way to demonstrate compliance with both the Electricity at Work Regulations and the Health and Safety at Work Act (1974).

For contractors advising clients, or for wholesalers supporting those contractors, this distinction is important. The conversation should not centre on whether testing is legally required, but rather how businesses can evidence that they are meeting their duty of care.

Equipment selection

In most commercial and industrial environments, such as offices, hotels, factories and public buildings, testing is typically carried out on site. This may be undertaken by an in-house maintenance team, but more commonly is delivered by specialist contractors.

For those carrying out testing, the choice of equipment is critical. Portability and ease of use are key considerations, particularly for engineers working across multiple locations throughout the day. Lightweight, handheld testers that are simple to operate help improve efficiency while reducing user fatigue.

Modern units, such as Martindale’s HPAT550 and HPAT650, are designed with these needs in mind. Features like USB-C charging support extended use in the field, while intuitive interfaces help streamline the testing process, particularly for less experienced operatives.

Beyond the tester itself, record keeping is another essential element of any PAT/EET regime. This can range from traditional handwritten logbooks through to fully digital, cloud based systems. Regardless of the method, maintaining accurate records is vital, not only for operational tracking but also for demonstrating compliance during audits or inspections.

Labelling also plays a key role. After testing, equipment is typically marked with a clear pass or fail indicator, providing immediate visual confirmation of its status. For wholesalers, this creates an opportunity to supply complementary products such as labels, logbooks and bundled kits. Solutions like the Martindale PATKIT1 PAT Accessory KIT, which include 1,000 pass labels, 200 fail labels, IEC adaptors and logbook, offers a convenient way to support both new and existing users.

Compliance

A persistent misconception within the industry is that PAT testing is a legal requirement in its own right. In reality, legislation focuses on outcomes rather than processes. Employers must ensure equipment is safe; PAT/EET is simply one of the most widely accepted ways of achieving this.

This distinction matters because it reinforces the importance of a tailored, risk-based approach. High-risk environments, such as construction sites or manufacturing facilities, will naturally require more frequent and rigorous testing regimes than lower-risk settings like offices.

For contractors, this means applying professional judgement rather than relying on fixed intervals. For wholesalers, it means understanding the nuances of different applications so they can recommend appropriate solutions and equipment.

Ultimately, whether it is referred to as PAT or EET, the underlying objective remains unchanged: ensuring that electrical equipment is safe to use. The updated terminology simply brings greater clarity to the scope of what should be included.

Regular inspection and testing, supported by appropriate equipment and robust record keeping, not only helps organisations meet their legal obligations but also reduces the risk of accidents and downtime. From contractors on site to wholesalers at the point of supply, having a clear understanding of both the terminology and the practical requirements is essential. By doing so, they can provide informed guidance, support compliance, and contribute to safer working environments across every sector.

Further information can be found here

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Cable runs in hazardous and potentially explosive locations need to be carefully planned, with every component chosen to meet strict performance and safety requirements. Lee Frizzell, CMP Products’ Technical Director, looks at their importance in these environments and how correct specification can be achieved every time.

The importance of cable glands simply can’t be underestimated – especially in hazardous and potentially explosive installation locations. Put simply, without the correct specification there’s the very real risk of gas migration and the increased danger that products aren’t able to prevent or contain an explosion.

Attention to detail

Of course, all aspects of cable runs in these kinds of installations demand exceptional attention to detail; with every component – from cables to junction boxes and everything in between – carefully specified to ensure they remain operational in times of system stress and prevent ignition of surrounding explosive atmospheres.

And while cable glands may seem a minor part of the specification challenge, it’s vital that they aren’t underestimated. They are, after all, the primary sealing point for cable entry and exit points and on top of that provide mechanical retention, environmental protection, earth continuity and, in explosive atmospheres, they help to prevent or contain an explosion.

Explosive atmosphere installations are classified into various types depending on the type of hazard; typically flammable gases, vapours or combustible dusts. In these situations, cable glands serve five essential functions:

• Explosion protection: Flameproof (Ex d) glands prevent flames produced by an explosion inside an enclosure from transmitting into the external atmosphere. While Increased Safety (Ex e) glands terminate and seal the cable into the enclosure, which itself contains certified components that cannot spark or reach temperatures high enough to ignite an explosive atmosphere.
• Gas migration prevention: Correctly specified or installed glands will prevent explosive gases travelling along cable runs into neighbouring equipment, causing explosion risks.
• Environmental sealing: Glands must block ingress of moisture, dust and corrosive elements. This is particularly important in offshore, marine or chemical processing plants.
• Mechanical stability: Pull-out resistance, or strain relief prevents cable damage and preserves safety over the equipment’s lifespan. 
• Earth continuity: Any armour or metallic screen in the cable is terminated and grounded inside the cable gland.

Safey first

If not correctly specified, then even a high quality cable installation and enclosure can become dangerously compromised. So, what steps need to be taken to ensure correct and safe specification?

There are several key steps that need to be taken; starting with understanding the environment in which the system will operate. This is classified by different zones – with Zones 0, 1 and 2 relating to explosive gas; and Zones 20, 21 and 22 concerning explosive dust.

These zones are then broken down to confirm the explosive atmosphere and subgroup and from there the type of enclosure protection concept needed can be identified. As mentioned, Ex d is flameproof, while Ex e is increased safety – no sparks or heat sources. There are also Ex i, Ex nR and Ex t options. The correct type of cable gland is then chosen to complement the enclosure. Problems arise if the wrong kind of gland is used – for example, fitting an Ex e gland on an Ex d enclosure is extremely dangerous.

The cable type then needs to be matched to the appropriate gland. For example, armoured cables require glands that can correctly terminate steel wire armour (SWA), steel tape armour (STA) or aluminium wire armour (AWA). The material of the cable gland itself, most commonly brass, nickel-plated brass, stainless steel or aluminium must also be selected appropriately.

Attention must also be paid to the cable’s inner bedding diameter, overall diameter, any armour or braid thickness and the applicable tolerances. Any uncertainty in selection risks compromising the cable or cable gland’s performance and overall system integrity.

The inner construction of the cable also needs careful consideration. For example, multicore cables increase the risk of gas migration and flame transmission through any gaps; to mitigate this risk and maintain Ex d integrity, a barrier type gland is required to seal directly around the cable inner cores. Barrier glands are mandatory for Ex d with unfilled multicore cables (per EN/IEC 60079‑14).

A correctly specified barrier gland will provide the peace of mind that gas will be prevented from travelling between the inner cores into neighbouring equipment or enclosures. This is essential in installations where explosive gases (e.g. hydrogen, acetylene, methane, ethylene) are present and pressure differentials exist.

Up to standard

As with every element of any cable installation, cable glands need to comply with industry wide standards. For projects following UKEX/ATEX or IECEx requirements, the key is the EN/IEC 60079 series and every explosive atmosphere cable gland we sell complies with the strict requirements of these internationally recognised standards.

On top of this, glands should carry certification markings that match the explosive atmosphere classification of the system; with temperature ratings that meet or exceed site requirements; gland materials match environmental and chemical exposure profiles; and Ingress Protection (IP) ratings align with enclosure and site specifications. Any deviation can make the entire installation non-compliant.

And the specification challenge doesn’t end there:

• Corrosion resistance requirements instruct the choice of product material and coating or plating
• Thread type mismatch is a frequent cause of installation error. Enclosure and gland entry threads need to match in type, length and taper. For Ex d, minimum thread engagement must also meet EN/IEC 60079-1

And, of course, and it should go without saying – the manufacturer’s installation instructions need to be followed precisely.

Structured approach

Cable glands may be small, but their importance in hazardous and explosive atmospheres is mighty. They protect personnel and infrastructure by maintaining the integrity of the system. Incorrect gland specification or installation increases the risk of a catastrophic explosion, gas migration, or moisture ingress.

By following a structured approach — beginning with proper explosive atmosphere classification and matching gland design to cable type, through to confirming certification, assessing environmental conditions and ensuring correct thread engagement — engineers and installers can achieve the right cable gland specification every time.

Additional information is available here

Find more industry features here

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As continuous ventilation continues to gain momentum across the UK, Ashley Smith, Product Manager at Vent-Axia, explains why dMEV is becoming an increasingly valuable category for electrical wholesalers looking to grow sales, support installers and meet rising demand for higher performance ventilation solutions.

Demand for decentralised mechanical extract ventilation (dMEV) is continuing to rise as the market shifts towards continuous ventilation solutions. With continuous running dMEV now accounting for around one in four fans sold into the UK, the category is creating a significant opportunity for electrical wholesalers. By stocking high quality, feature-rich dMEV products, wholesalers can support electricians with advanced ventilation solutions while benefitting from growing market demand and higher-value sales.

For wholesalers, this presents an opportunity to expand product ranges and support installers with ventilation products that offer more than standard intermittent extract fans. Continuous-running dMEV units are increasingly being selected by electricians and households, creating ongoing demand for products that combine energy-efficient performance, quiet operation, improved indoor air quality, and straightforward installation.

As installers look to offer customers improved ventilation solutions, wholesalers that stock reliable and innovative dMEV products are well placed to become trusted supply partners while increasing basket value and counter sales opportunities.

Higher value sales

Stocking premium dMEV products allows wholesalers to help electricians upsell more advanced ventilation solutions to customers. Products offering intelligent controls, quiet running and improved IAQ provide clear differentiation compared to more basic extract fans, helping installers secure higher-value projects, offering an upsell or spec-break opportunity.

For example, the Vent-Axia Lo-Carbon PureAir Cleanse has been designed as a next-generation continuous-running dMEV that combines premium performance with a competitive trade price. This creates an attractive over-the-counter sales opportunity for wholesalers looking to offer electricians a feature-rich ventilation solution that is easy to recommend and install, with the quality, reliability, and innovation installers expect.

As consumer awareness of IAQ continues to grow, products that provide healthier indoor environments are becoming increasingly attractive. The PureAir Cleanse delivers continuous, energy-efficient ventilation while operating at near-silent noise levels, helping improve comfort within the home. Its sleek, modern circular design also gives installers a product that is visually appealing as well as high performing.

Driving added value

For wholesalers, stocking advanced ventilation products can help increase sales opportunities and provide electricians with clear upgrade paths for customers.

The PureAir Cleanse range, for example, includes models with humidity control, timer and integrated IAQ sensing, allowing electricians to choose solutions suited to different property requirements. Features such as these enable wholesalers to offer products across multiple price points while supporting customers looking for enhanced functionality.

Vent-Axia’s PureAir Cleanse is also the industry’s first dedicated continuous-running dMEV to feature an integrated IAQ sensor. Combining intelligent humidity control with advanced air quality sensing, the unit can detect, measure, and respond to chemical pollutants, specifically total volatile organic compounds (TVOCs), which are commonly generated through everyday activities such as cooking, cleaning and showering.

When pollutant levels increase, the fan automatically boosts extraction rates to help maintain healthier indoor air conditions. For wholesalers, innovations such as integrated IAQ sensing create strong sales opportunities by providing installers with a premium, technology-led ventilation solution that addresses growing concerns around air quality and occupant wellbeing.

Comfort

Quiet operation is another increasingly important consideration within the residential ventilation market. Homeowners expect ventilation to operate effectively without causing disruption, particularly within bathrooms and living areas.

The latest dMEV products are therefore designed to run almost silently in the background while continuously maintaining airflow. The PureAir Cleanse, for example, features intelligent control logic that adjusts airflow smoothly and proportionally, helping reduce unnecessary noise and nuisance tripping.

Additional features such as patented delayed comfort control and intelligent light-switch logic further improve household comfort by helping minimise disturbance during night-time bathroom use. These types of features provide wholesalers with additional selling points when supporting installers and contractors looking for premium ventilation solutions.

Installation

Ease of installation remains critical for electricians, making installer-friendly design an important factor when wholesalers select ventilation products to stock.

Products that simplify installation and commissioning can help reduce time on site while improving installer satisfaction and repeat purchases. The Vent-Axia PureAir Cleanse has been designed with this in mind, offering quick installation alongside high-pressure development and a silent mixed-flow impeller that allows the unit to meet the requirements of many domestic applications without requiring a traditional centrifugal fan.

Additional features including flexible wall and ceiling mounting, compatibility with low ceiling voids, an IPX5 rating and simple speed adjustment controls all help streamline installation and commissioning.

Additional information can be found here

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A look at the latest display solutions to help your in-store purchases.

Unicrimp has reinforced its commitment to supporting electrical wholesalers with the introduction of a comprehensive suite of point-of-sale (POS) solutions, designed to maximise product visibility, streamline merchandising and ultimately drive sales.

Q-Crimp countertop fixings POS

Created to support the newly launched Q-Crimp Fixing Additions range, this countertop display showcases the Plus Series high-performance woodscrews alongside Bullfix fixings. The updated packaging is fully recyclable and features a universal branding approach, reinforcing sustainability while maintaining strong shelf presence. Additionally, the fixings are supplied in contractor-friendly trays, improving usability on-site and enhancing convenience for installers.

Trade Tub floor stand display

The Trade Tub POS stand is a flexible, dual-section unit designed to optimise in-store merchandising. The lower section is configured to hold trade tubs, ensuring easy access to high-demand products, while the upper section offers wholesalers the freedom to customise displays according to their specific requirements. This adaptability enables distributers to tailor their offering to suit customer demand and available retail space. 

Slat wall display

A key component of the POS offering is the Slat Wall Display system, which will allow wholesalers to present Unicrimp’s diverse product ranges in a structured and visually engaging manner. These boards are highly versatile and can be configured to suit a variety of retail environments. Wholesalers can select from brand-specific boards, each carefully curated to highlight the distinct features and benefits of individual product lines, ensuring a clear and intuitive customer experience.

Catalogue dispenser

To ensure wholesalers have access to up-to-date product information, Unicrimp also provides a dedicated catalogue dispenser. This solution is designed to neatly house current catalogues and supporting literature, enabling customers to easily access detailed product specifications and guidance at the point of purchase.

Marketing support

In addition to physical POS solutions, Unicrimp provides extensive marketing support through the marketing hub on its website. This resource offers wholesalers access to a wide range of tools, including online ordering, product literature, imagery, and video content, enabling a fully integrated approach to product promotion.

Electrical wholesalers looking to enhance their in-store offering and benefit from Unicrimp’s POS displays and wall boards are encouraged to contact their local Unicrimp sales representative for further information, or click here

Find more ‘Point of Sale’ features here

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Martin Plumbridge, Technical Manager at Doepke, discusses RCD protection and looks at whether an RCCB Type B trips on DC.

We have witnessed an increase in reports from several well-informed installers relating to Type B’s that do not function correctly in the presence of DC components. For example, one design was marked as bidirectional but failed smooth DC tripping test. Although the basic requirements of BS 7671 do not require verification that the Type B RCD protection feature works, it would seem prudent to spend a few minutes checking that modern complex domestic systems costing possibly £10,000 or more are protected by a functioning RCD. A simple test with the correct instrument can be performed to verify that the RCD trips when subject to smooth DC.

RCD tests and thresholds

The existing BS7671 1 x RCD verification test required for example for 30mA RCDs relates to an AC sinusoidal residual current, irrespective of the type of RCD.

• All RCCBs subjected to 50Hz residual current are designed to trip between >50% – <100% I∆n, which equates to 15 to 30mA. The max switch off time at 1 x is 0.3s.
• Type A, type F, and type B pulsed residual current (50Hz); the tripping current threshold changes to >35% – < 140% I∆n.

Type A (BS EN 61008-1) must still trip with the pulsed waveform superimposed on 6mA smooth DC.

Type F (BS EN 61008-1 and BS EN 62423) must still trip with the pulsed waveform superimposed on 10mA smooth DC.

Type B (BS EN 61008-1 and BS EN 62423) subjected to smooth DC residual current must trip between >50% – <200% I∆n i.e. for 30mA equates to 15 < 60mA DC on both cycles 0° and 180°.

The standards define the tripping thresholds and times based on the residual current components. Although BS 7671 only requires verification of the AC trip threshold irrespective of the type, Michael Peace’s IET Article in Issue 91 July 2022 explains that other tests are not precluded.

Why DC tripping characteristics matter

RCD Types A and F use a magnetic core to detect imbalance between live and neutral conductors. Smooth DC residual current above the design current can saturate this core, a phenomenon known as DC blinding.

When the core is saturated, The RCD becomes insensitive to further imbalance. Trip thresholds increase unpredictably; the device may fail to trip entirely. This is a major safety concern because a circuit could carry a dangerous fault current without any protective disconnection.

Type B RCDs are designed to detect smooth DC and trip when it exceeds the default value. This maintains sensitivity to both AC and pulsating DC components while also responding to pure DC leakage.

Test instruments

For test instruments equipped with a Type B RCD setting, a multiplier of 2 × I∆n is applied in accordance with the product standard BS EN 62423. We have witnessed an increase in complaints relating to a number of type B’s that do not function correctly in the presence of DC components. Particularly those that are marked as bidirectional. A simple test can be performed to verify DC tripping on DC currents.

Testing procedure for Type B RCDs

The testing procedure for a type B RCD is relatively straight forward from connecting the live, neutral and earth to probes the appropriate terminals on the load side and carrying out the tests. Once complete, carry out the same test on the supply side to check the device is true bidirectional.

• Carry out standard AC test first (following all testing safety procedures).
• DC Tripping test applicable to any 2-pole 30mA type B (Outgoing circuit should be disconnected).

To measure RCD tripping current on a Fluke 1654B

1. Turn the rotary switch to I∆n position.
2. press F1 to select the test current phase, 0° or 180°.
3. press F3 to select the RCD test-current waveform: smooth – DC current to test type B RCD.
4. press F4 to select the RCD current rating (10,30,100,300 or 500mA).
5. press and release ‘test. Wait for the test to complete.

Conclusion

So, does a Type B RCCB trip on DC? Well, the answer is that it should do but some don’t. If it is detecting DC it should trip between >50% – <200% I∆n, which equates to 15 to 60mA range on both cycles 0° and 180° for 30 mA device. If it is truly bi-directional it will trip on DC irrespective of which side, you connect the supply.

The testing procedure for a type B RCD including DC test takes a few minutes in addition to the standard AC test. If it is complex installation requiring Bi-directional RCD functionality you can verify the operation by repeating the test on the reverse side.

Spend a few additional minutes checking that your modern complex domestic system and the people using it are adequately protected by the RCD you have specified and installed.

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Ruth MacEachern, Product Manager at EnviroVent discusses PIV and MVHR and choosing the right ventilation strategy for healthier indoor environments

As awareness of indoor air quality continues to grow in line with new regulations like Awaab’s Law, ventilation is no longer viewed as a “nice to have” but a fundamental part of delivering healthy, compliant living spaces. Homes today are more airtight than ever, which brings energy efficiency benefits but also increases the risk of trapped pollutants, excess moisture, condensation, and indoor air quality issues if ventilation isn’t properly addressed.

Two of the most commonly specified whole‑house ventilation approaches in UK homes are Positive Input Ventilation (PIV) and Mechanical Ventilation with Heat Recovery (MVHR). While both are designed to improve indoor air quality, they work in very different ways and suit different property types and scenarios.

Understanding how each system functions and where it performs best is key to ensuring the right solution is specified for each home.

How PIV works

Positive Input Ventilation is a whole‑house system that works by gently supplying filtered air into the property, typically from the loft space. This continuous input of air creates a slight positive pressure inside the home, which helps to push stale, moisture‑laden air out through natural leakage points such as trickle vents, air bricks and gaps around doors and windows.

Rather than extracting air mechanically from individual rooms, PIV focuses on dilution and displacement. Pollutants such as excess humidity, odours, airborne allergens and everyday household contaminants are gradually forced out and replaced with filtered air.

Because the air is introduced at a low flow rate and filtered before entering the living space, modern PIV systems operate quietly and unobtrusively, providing background ventilation without relying on occupant interaction.

The indoor air quality and health benefits

PIV can play a particularly valuable role in reducing condensation, damp and mould, which remain some of the most common indoor air complaints in UK housing. Excess moisture generated from everyday activities such as cooking, showering and drying clothes can quickly build up in poorly ventilated homes, creating ideal conditions for mould growth and dust mite proliferation.

By constantly introducing drier external air, PIV helps to stabilise humidity levels across the entire dwelling, reducing surface condensation and limiting the conditions mould needs to thrive. This, in turn, supports better respiratory health, especially for occupants affected by asthma, allergies or other breathing conditions.

Unlike intermittent extract fans, which depend on manual operation or occupancy sensors, PIV systems run continuously, maintaining consistent air movement and improving overall air freshness throughout the home.

When PIV is the best option

PIV is particularly well suited to existing homes and retrofit scenarios, where installing a ducted ventilation system may be disruptive or impractical.

It is commonly specified in:

• Older properties with limited or inconsistent background ventilation
• Homes experiencing condensation or mould but without major structural defects
• Social housing and private rental properties where minimal disruption is important
• Occupied homes where residents need an immediate, low‑maintenance solution

Because installation requirements are relatively straightforward, PIV offers a cost‑effective and scalable way to address indoor air quality issues across large housing portfolios. Its simplicity, reliability and ease of upkeep make it a popular choice where a quick improvement in living conditions is required.

However, it’s important to recognise that PIV relies on the building’s natural leakage paths to expel air. As housing stock becomes increasingly airtight, this is where alternative strategies may be more effective.

Introducing MVHR

Mechanical Ventilation with Heat Recovery operates on a fundamentally different principle. Rather than supplying air into the property and allowing it to escape naturally, MVHR systems extract stale air from wet rooms such as kitchens and bathrooms, while simultaneously supplying fresh air to living and sleeping spaces via a fully ducted system.

What sets MVHR apart is its ability to recover heat from outgoing air. As warm, stale air is extracted, the heat is retained within the heat cell to pre‑warm the incoming fresh air, improving thermal efficiency while maintaining a continuous supply of air. This controlled, balanced airflow allows MVHR systems to manage indoor air quality with a high degree of precision.

Why MVHR delivers long‑term indoor air quality control

MVHR is particularly effective in airtight, modern properties, where uncontrolled air leakage is minimal and ventilation must be carefully managed.

Because air supply and extract rates are balanced, MVHR prevents pressure imbalances within the home, reducing draughts and helping maintain stable internal conditions. The continuous removal of humidity and pollutants directly from source rooms makes MVHR highly effective at reducing condensation and helping to protect the building fabric.

From an indoor air quality perspective, MVHR systems also offer excellent filtration, helping to reduce the ingress of outdoor pollutants and allergens, which are a growing consideration in urban environments.

When MVHR is the right choice

Under Approved Document F of Building Regulations, MVHR is suitable for a dwelling with any air permeability level, however MVHR is often suited to:

• New‑build homes designed to high airtightness standards
• Properties undergoing deep retrofit or whole‑house renovation
• Homes where energy efficiency and occupant comfort are key priorities

While installation is more complex than PIV, the long‑term benefits in terms of comfort, air quality control and energy performance make MVHR a strong choice where design conditions allow.

Choosing the right system

No single ventilation system is right for every property. The most effective solution depends on a range of factors, including:

• The age and airtightness of the building
• Existing ventilation pathways
• Occupant behaviour and lifestyle
• Budget, disruption tolerance and long‑term performance goals

In many existing homes, PIV provides a practical and accessible route to improving indoor air quality and reducing moisture‑related problems. In contrast, MVHR offers maximum control and efficiency for homes designed to support a fully ducted ventilation strategy.

What matters most is that ventilation is considered early, specified correctly, and matched to the realities of the building and its occupants. With indoor air quality now firmly on the agenda, choosing the right approach has never been more important.

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