If you have a question about lighting, our ever expanding Knowledge Base & FAQ is a great place to start to find your answer.

If you can't find what you are looking for, feel free to contact us.

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Key Terms
Yes, we do host some of our LDT files publicly. With this said, we consistently test our products at our National Distribution Centre, and when completing lighting designs in-house, we use the most up-to-date LDT files that we possibly can. Certain LDT files are not currently hosted on our website, but we are looking to update our online offer. If you require LDT files, please contact lightingdesign@belllighting.co.uk for more information.
DALI Dimming - DALI stands for Digital Addressable Lighting Interface. DALI assigns a separate address to each lighting fixture, enabling individual and group control. The key takeaway is that it transforms lighting control systems into an intelligent network. With a DALI system, a master controller will be used, often referred to as the DALI bus controller. A DALI controller allows for quick and easy management of your lighting system.

DSI Dimming - Digital Serial Interface (DSI) Dimming is a protocol for the controlling of lighting in buildings (initially electrical ballasts). The digital DSI signal is used to communicate between DSI control modules and digital dimmable DSI ballasts.

Switch Dimming - This form of dimming is similar to DSI dimming, however, with Switch Dimming, the process is simplified further, using a 230 Volt Mains frequency as a signal transmitter through a retractive (non-latching) switch. Switch Dimming is a cost-effective solution which is simple but effective.

Watts (W) are a measurement of how much energy a lamp/luminaire uses. Traditionally watts have been used to describe how much light output you would get from a lamp, however this is becoming more and more unreliable with newer energy efficient technology. For example, with incandescent lighting a certain wattage bulb would indicate a fairly accurate light output range, however with LED Lighting, due to differences in technology used, a wattage does not necessarily guarantee a set light output. For this reason, moving forwards lamps will start to be described using Lumens instead of Watts.

New energy labelling regulations now require the packaging to state the accurate Energy Consumption (EC) of the lamp, measured in kWh/1000h, if it differs from an already stated wattage. In the vast majority of cases the EC will match the Wattage value, however for any lamps with external ballasts or control gears (e.g. fluorescent tubes, 2D's etc) the EC will be a little higher than the wattage. This regulation is important moving forwards as lamps become being described in lumens, it is still important to know the energy consumption of the lamp.

Voltage (V, Volts) is the term used to describe the 'force' of electricity within the electric circuit. The most common analogy for voltage is the electronic-hydraulic analogy, or drain pipe theory, which likens the voltage to water pressure inside pipes.

The voltage of mains electricity supply varies around the world, with the UK, Europe, and the Far East being 220 - 240V, whereas the Unites States currently measures as 120V. In terms of Lighting, the voltage of the lamp simply indicates the voltage at which the lamp is calibrated to function.

In simple terms, the lumens (lm) can be thought of as the 'total amount' of visible light emitted from a source. For lighting the higher the lumens value of the lamp, the more light it emits.

Lumens are also used to determine the Luminous Efficacy of a light source (how efficient it is a producing light), by calculating the Lumens per Watt (lm/W) for the lamp. The more Lumens the lamp produces per Watt of energy used, the more efficient it is at producing light.

‘The LIA position is that it is not illegal to sell a panel that is neither TP(a) nor TP(b) rated as long as it is clearly stated in the installation instructions that it cannot be used if it forms part of a ceiling. Panels that form part of a ceiling (recessed panels) must be either TP(a) or TP(b) rated and this should be installed in accordance with the Part B regulations relating to that rating.’

TP(a) rating:

Thermoplastic materials undergo specific tests to certify their ability to withstand the application of heat and fire. The requirements are established by Building Regulations Approved Document B, which sets out the fire safety of buildings. Section B2 covers internal fire spread.

TP(a) usually relates to polycarbonate diffusers with a thickness of at least 3mm. The testing procedure requires that the material self-extinguishes and any flaming and afterglow must not exceed five seconds once the source of flame is removed. There is no restriction on the use of TP(a)-rated diffuser material.

TP(b) rating:

TP(b) materials tend to be acrylic or polystyrene. It is a more problematic material because its use is limited by the extent of the installation. The testing for TP(b) requires a flame to be presented to the material. If the material combusts, the spread of flame must be no more than 50mm per minute – that’s 12 minutes to completely blanket a 600mm wide panel.

How the restrictions work in practice is as follows. In circulation spaces, the total area of diffuser panels must not exceed 15 per cent of the total floor area. The maximum area of one diffuser, or group of diffusers, must not exceed 5m x 5m. There must be a 3m spacing between each 5m x 5m diffuser grouping.

Maximum and minimum spacings of TP(b) diffuser panels in circulation areas:

In offices and other rooms, the total area of diffuser panels must not exceed 50 per cent of the total floor space. The maximum permissible area of a single diffuser panel must not exceed 5m2. Where a conventional arrangement of luminaires is used, then either the arrangement for circulation spaces should be employed or else spacing between all luminaires should be no less than twice the diagonal distance (or diameter) of the luminaires in use.
Maximum and minimum spacings of TP(b) diffuser panels in spaces other than circulation areas:
TP(b) is a problematic material because it does catch fire, albeit in a ‘controlled’ manner. The total area of 5m2, for example, could be used to apply to a linear light channel measuring 100mm wide x 50m long. The material has the potential of spreading flame along its entire length over a period of only 20 minutes per metre. In a few hours, the lighting diffuser could spread its flame the length of an office corridor. This is a worrying prospect.
An IP Rating refers to the Ingress Protection standard which a product meets. The rating relates to the degree of protection which a luminaire provides against the entry of solid foreign bodies and moisture. An IP65 rated product is protected against dust and offers protection against water jets. Further information is shown below:

Ingress Rating

 Protection Rating

0 - Not Protected

0 - Not Protected

1 - Protected against solid objects greater than 50mm 1 - Protected against dripping water
2 - Protected against solid objects greater than 12mm 2 - Protected against dripping water when tilted up to 15°
3 - Protected against solid objects greater than 2.5mm 3 - Protected against spraying water
4 - Protected against solid objects greater than 2.5mm 4 - Protected against spraying water
5 - Protected against solid objects greater than 1mm 5 - Protected against water jets
6 - Dust protected 6 - Protected against heavy seas
7 - Dust tight 7 - Protected against the effects of immersion
  8 - Protected against submersion
UGR<19 relates to a unified glare rating which is deemed at 19 or under. UGR is an objective measure of glare that is used by lighting designers to help control the risk that occupants of a building will experience glare from the artificial lighting. Generally speaking UGR relates to the design figure which is present upon completion for a room or space, it is not a figure which relates to a product specifically.

UGR values range from 40 (extremely high glare) to 5 (very low glare). In most situations, the less glare the better, so a low UGR is better than a high UGR.

International standards such as EN12464 recommend maximum UGRs for different situations. UGR<19 is recommended for many office and classroom settings.

If you are looking for certainty on a space/project meeting UGR<19 standards, you require a lighting design.
Simply put, the more information which can be provided about a project, the better. For internal areas, the minimum requirement would be the height of a room (or all rooms if a layout is provided), the width and length of a room (or all rooms if a layout is provided), ceiling configuration (for example, if the ceiling was a 600x600 grid format in an area where this might be unexpected, this would be useful information), and the designation of a room (what the usage of the room will be, and any other expectations in terms of lighting if possible). Further information would include, escape plans, designated exit routes, preferred fittings, wall, floor and ceiling types/reflectances, obstructions which are in place, and any extra details.

For external projects, the minimum information would be the designation of the area, the level of play if the area is to be used for sport, any obstructions or requirements for the local area, column heights if columns are already in place, and any other important details which would impact the choices involved. Again, the more information which can be provided, the better.

Our Lighting Design Team will always design to CIBSE or other relevant standards unless advised otherwise with a valid basis, and they will regularly offer multiple options on a design if necessary. Please note that our Lighting Design Team is consistently busy, and enquiries should be sent to the team with a reasonable amount of time for completion; 3-5 working days for standard projects, and 5-7 working days for larger projects is a standard lead time for the service.
An IK rating is a two digit number used to provide an indication of a product’s resistance to damage from an impact. The rating scale runs from 00 to 10, indicating the amount of protection provided by an electrical enclosure (including luminaires) against an impact.

General figures: 

IK04 is protection against 0.5 joules of impact, which is the approximate equivalent of a 0.25kg mass being dropped from 200mm above the product.

IK07 is protection against 2 joules of impact. This is equivalent to a 0.5kg mass being dropped from 400mm above the product.

IK08 rated products are protected against 5 joules of impact. This is the equivalent of a 1.7kg mass being dropped from 300mm above the protect.

IK09 rated items are protected against 10 joules of impact, which is the equivalent of a 5kg mass being dropped from 200mm above the product.

IK10 rated products are protected against 20 joules of impact, which is the equivalent of a 5kg mass being dropped from 400mm above the product.
The direct price of a light fitting or lamp is important; just like with any product, price matters. With that said, the warranty offer, along with the efficiency and quality of a light fitting or lamp, is also vitally important when it comes to long-term costs for the end user. An ROI can be produced by our Sales Support Team at BELL Lighting, or in a less detailed way through our Energy Saving Calculator via our website; this details the amount of energy which would be saved as a result of installing our products, and shows a monetary figure along with a time frame for return on investment as a result of the new installation. Oftentimes, and particularly when converting to LED, a return on investment can take place extremely quickly, and the long-term benefits of switching to BELL Lighting are considerable. Contact your local Area Sales Representative, or email sales@belllighting.co.uk for more information.
In a circular economy, things are made and consumed in a way which reduces our use of the world’s resources, cuts waste and reduces carbon emissions. Products are kept in use for as long as possible, through repairing, recycling and redesign – so they can be used again and again.

We are pushing towards becoming a more sustainable company, with circular economy at the forefront of our long-term thinking when it comes to product releases. We recently employed a Head of Sustainable Product Innovation with the goal of bringing high quality circular economy products into our range, and the first product in this family, our Firestay Geo LED Sustainable Modular Downlight, has received an exceptional amount of attention. The product won three awards in 2023, including 'Lighting Product of the Year' and 'Smart Buildings/Sustainability Product of the Year' at the Electrical Contracting News Awards, and this is just the start of our journey towards what we believe will be the future of the lighting industry.

In order to become Net Zero, companies will have to begin looking into circular economy as part of their common business practices. We have started this process early, and we want to show leadership in the space. As part of this drive towards sustainability we also achieved Carbon Neutral in 2023.
Colour temperature is a standard method for describing colours for use in a range of situations. Colour temperatures are normally expressed in units called Kelvins (K). Note that the term “degrees Kelvin” is often used but is not technically correct. The colour temperature is for descriptive purposes only and does not relate to the actual temperature of the lamp.
A PIR sensor is a passive infrared device that detects motion by sensing changes in heat radiation. A PIR-based motion detector is used to sense movement of people, animals, or other objects. They are commonly used in burglar alarms and automatically activated lighting systems.

A Microwave sensor detects motion and operates by emitting continuous microwave signals that bounce off objects and return to the sensor. When there is no motion, the reflected signals have the same frequency as the emitted signals. However, when an object moves within the sensor's detection range, the frequency of the reflected signals changes. Through this process, Microwave sensors are able to ensure that lighting turns on and off based on motion within a space.

We offer both of these sensor types across a variety of products within our range, and they are generally quick and easy to install.
Lighting Types

Compact Fluorescent Lamps are a low energy alternative to incandescent type lamps. These lamps consist of a glass tube filled with mercury vapour and gas, with an electrode at either end of the tube. When an electrical current passes through the gas, it excites the mercury vapour, which releases ultra-voilet light. Because ultra-violet light is invisible to the human eye, a phosphor powder coating is apllied to the inside of the glass tube, the ultra-violet photons interact with this phosphor coating, causing it to fluoresce. The colour temperature of the lamp can be varied by using different types of phosphor coating.

An electronic ballast is also required to limit the current in the circuit to prevent damage to the lamp. In the case of fluorescent tubes and most commercial type fluorescent lamps, the ballast is added external to the lamp, in the circuit or built into the fitting. For most compact fluorescent lamps the ballast is built directly into the lamp in its base, allowing them to be used as direct replacements for classic incandescent lamps in the same fitting.

Halogen lamps are a type of incandescent lamp (see above) using a tungsten filament, which are also filled with a small amount of halogen gas (e.g. iodine or bromine) in a capsule.

This combination of a tungsten filament and halogen case causes a reversible chemical reaction known as a Halogen Cycle to take place, this reaction causes the evaporated tungsten to form a Halide with the halogen gas. Once at a high enough temperature, the halide disassociates (breaks apart), which deposits tungsten back into the filament, thus extending the life of the lamp. This reaction also keeps the lamp clear (in an ordinary incandescent lamp the filament is deposited on the inside of the glass bulb, reducing clarity).

Incandescent light bulbs have been around over a hundred years, and are what people think of as the traditional or classic light bulb. This type of lamp produces light when an electric current passes through a filament wire, heating it to a high temperature until it glows.

The term Incandescence refers to an object emitting light due to its high temperature, and it differs from Luminescence, which refers to the emission of light by an object which is below the temperature required for incandescence.

Due to this method of light emission, incandescent light bulbs are highly inefficient, with only ~10% of the energy used being turned into visible light, and the rest being converted to heat. The luminous efficacy of an incandescent bulb is around 16 lm/W, compared to an LED lamp which is up to 70lm/W.

LED Lighting is based on Light Emitting Diode (LED) technology, which results in lamps with significantly reduced energy consumption, but with lifespan and luminous efficacy several times better than that of both incandescent and CFL lamp types.

The Basics

LEDs use what is known as a semiconductor to produce light when an electric current is applied to it. It produces light because the electric current causes electrons within the semiconductor to move around, which releases energy in the form of photons (light). The colour of the light released is dependent on the material used as the semiconductor.

Because most semicondutors produce coloured light, to produce 'white' light that we can use for domestic lighting, a mixture of colours or a phosphor coating (similar to CFLs) is used to create light that appears white.

The Science

The main component of an LED is a 'chip' of semiconducting material, a semiconductor has the electrical conductivity between that of a conductor (e.g. copper wiring) and that of an insulator (e.g. rubber). This semiconductor is doped (intentionally introduced) with impurities, which modify the electrical properties of the semiconductor, in this case creating what is knows as a p-n junction. This p-n junction consists of a p-type (positively charged) side, and an n-type (negatively charged) side, with the negative side having a high concentration of free electrons, and the positive side having a high concentration of electron holes (the conceptual opposite to an electron, or the lack of an electron where one could exist).

When an electronic current is introduced, electrons and holes flow into the junction, and when an electron meets a hole it releases energy in the form of a photon. The wavelength of the light emitted is reliant on the band gap of the semiconductor used. The band gap is equivalent to the energy required to free an outer shell electron from its orbit about its current atom nucleus, to become a mobile charge carrier, and hence join with an electron hole.

More About Us
Yes! We offer next day delivery on all orders placed before 4pm, including orders placed over email and online (there is an exception to this rule on the 1st of every month, and for clarity on this, you can contact your local ASE). There may be a cost involved in terms of delivery to certain areas, and if you have any queries or require further information on our delivery offer, contact your local ASE.
No. BELL Lighting is a supplier to the electrical wholesale industry, and as such, we supply our products to specific wholesale partners and distributors. You can find out more about this by contacting our Sales Team, and through the following page: https://www.belllighting.co.uk/about-us/online-distributors/
You can find details on all Area Sales Executives at BELL Lighting through the 'Contact Us' section of our website, found here: https://www.belllighting.co.uk/contact/
We encourage our customers to order online whenever they can - the process is quick and efficient, and avoids any potential delays which may be incurred through a more manual method of ordering. To order online, visit our website and then click on the profile icon in the top right of your screen. Sign-in with your account details; you will now be redirected to the Account Home Page, from here, you can look at several new sections for ordering. These sections include New Product information, Saved Order details, Favourites, an Address Book, and much more.

To create a new order, click on the basket icon in the top right of your screen. From here you can enter individual part codes alongside quantities, simply type in the relevant code and quantity, add the product to your basket and then save your changes. You can add several products and you can also save your basket under a relevant name. You can also add promo codes if relevant, or you can upload your order (ideal for large orders to save time) through a CSV upload via a call-to-action button under your order summary.

When you have created your order, click 'Continue To Delivery' and select an address; if you do not have a saved address, you can select 'Deliver To Different Address' and manually insert the relevant details. You can also enter your PO code and any extra notes before confirming your order.
Yes. As of September 2023, all electrical and electronic equipment in the UK must comply with the revised Restriction of Hazardous Substances (RoHS) Directive. This means manufacturers are required to make sure their lamps don’t contain mercury before being sold. From 1st September 2023, the RoHS Directive also stated that all T5 and T8 fluorescent tubes should be phased out. All business owners are required to source alternative lighting solutions and discard them as hazardous waste, or through structured recycling.
Better Together - we want all of our staff to feel trusted and respected at all times

Customer Experience - we want to ensure that our customers are at the forefront of everything that we do

Vision - we want to strive for continuous improvement at all times

Passion - we want to be the best version of ourselves

Our core values are vital to our business and our continued journey towards an improved company culture. We believe that in order to grow our business, our staff and customers must feel valued and respected, and as a family business with a desire to be around for the long-term, strong relationships are at the core of our business model. Our core values give us targets which we can work towards every day in order to create the best possible working environment.
There was a Lamp Energy Rating label change in 2023, meaning that the energy rating scale moved from A++ to E, to an A to G system. It is important that consumers and distributors understand the context behind this change, as products may appear to have seen a reduction in efficiency, when this is not the case. Generally speaking, a product which was previously rated as A or above may now be labelled as E (or similar) as an example, but this does not represent a change in product quality, rather a change in the criteria for ranking the most efficient products on the market.

The change, over time, will help the consumer, and it will ensure that manufacturers push the boundaries of efficiency even further. The change allows the consumer to truly choose between products based on efficiency, as products which are market leading now have a chance to stand out, whereas the highest ratings in the previous format were often varied in terms of their efficiency despite existing under the same designation, making it difficult for consumers to truly choose a product based on efficiency. This is largely due to the rapid improvement in the quality of products since the move to LED became common practice within the lighting industry.
To reward loyal electricians and electrical contractors who consistently use BELL Lighting products in their business, we have launched the BELL Advance Rewards Scheme to say thank you. 

The scheme allows you to build up points based on the value of BELL Lighting goods that you have purchased through one of our associated electrical wholesalers, and redeem them for shopping vouchers. 

For every £1 you spend, you get 1p back, its that simple. We have teamed up with Amazon, Greggs, Next and Love2Shop, to provide easily redeemable rewards to claim back at the click of a button.

Sign up to BELL Advance by visiting www.belladvance.co.uk and start gaining points today!
The LIA is the Lighting Industry Association. The Lighting Industry Association has been representing the lighting industry for many years and has an established reputation for representing and assisting lighting related companies.

Being a member of the LIA as a manufacturer is a clear sign that a company is focussed on quality and meeting regulations within the industry. It is also a clear sign that a manufacturer is committed to their products being tested in the correct manner, and products can be sent into the LIA for accredited testing.

Alongside being one of the leading bodies in the industry, the LIA also provides training in a number of areas. One of the key training areas for the organisation is in the Lighting Design space, with several accredited courses available; all of our Lighting Design Team have completed LIA Certificate Courses in Lighting Design, with the majority of the team having completed all advanced versions of the interior and exterior programme. Those who are yet to complete all areas are booked in for their final courses. We also have members of other teams with these qualifications from their previous experiences, with members of our Sales and Marketing Teams being trained to LIA standards. 
Established in 1920, British Electric Lamps Ltd have become a leading manufacturer and supplier of light sources and fixtures to the electrical wholesale industry.

Continued investment in cutting edge technology has gained BELL a reputation in the industry for unique energy saving products, manufactured to the highest specification. Our onsite laboratory and QC control centre ensures that our products meet the highest standards for performance and safety and comply with all the latest EU conformity requirements.

Our move to BELL House in 2023 resulted in a real chance for growth for the business, as we passed 100 staff members and began along a journey of sustainability, becoming Carbon Neutral and bringing four core values into our business. We believe that we are 'Better Together' when all staff feel trusted and respected at all times; that the 'Customer Experience' should be at the forefront of everything that we do; that we must ensure that we maintain our 'Vision' to strive for continuous improvement; and that we must always hold onto our 'Passion' to be the best version of ourselves.

In 2023 we introduced circular economy products into our range, with our Firestay Geo LED Sustainable Modular Downlight winning three awards. The product won a Green Build Back Better Award, along with 'Lighting Product of the Year' and 'Smart Buildings/Sustainability Product of the Year' at the Electrical Contracting News Awards.

We are a family business, and we have been since our inception in 1920, and we still hold our family values to this day.
Our Firestay Geo LED Sustainable Modular Downlight results in zero waste to landfill, with 90% of all material used being returned to BELL at end of life for re-use and re-manufacture. The other 10% is eligible to be recycled. The product is TM66 certified and the housing is designed to remain in the ceiling for life.

The product is safe for use, with Firestay Certification; the product is suitable for 30, 60 and 90 minute solid joist ceilings, along with 30 minute I-Joist and Metal Web ceiling systems.

At around 115 Lm/W the CCT (2700K/3000K/4000K/6000K) Geo-Mod lighting module is efficient, and the housing is exactly that, a housing with no electrical element, and requiring no need for replacement upon product failure - the module can simply be sent back to BELL Lighting through a stockist of the product with set-up return procedures found via a QR code on the module, and replaced with a newly purchased module. BELL will then remanufacture the module, creating a full circular economy. Replacing the module is easy, with a simple twist of an aesthetically pleasing handle, the module can be taken out of the housing without the need for any tools. With a 7 year warranty, the product is well protected, and this represents our desire to support customers who use the Geo, as we want to encourage customers to move in the direction of sustainability; the Geo also boasts a CRI 85 rating, is rated as LMR 80, and packaging for the product conforms to the latest FSC standards.

The provision of a product which requires zero waste works towards the UK’s future planning with reference to net zero aims; this a significant step towards circular economy for the Lighting industry. The product also works towards BELL Lighting's goals, as we have recently been certified as Carbon Neutral, and we want to continue along the journey to Net Zero by 2030. AMA Research estimates that only 25% of the 20 million Downlight units which are released into the UK Lighting market per annum are currently being recycled; the Geo challenges this and is a real step forwards for the Downlight market.

Despite only launching the Firestay Geo at the start of June, we have already begun to see the impact of the product. We raised substantial awareness for the product and for circular economy principles at our CEF Live stall, with presenter Nick Knowles highlighting the product. There has been great attention shown to the product on Social Media, with our channels boasting close to 22,000 impressions and over 1,200 engagements for posts relating to the Firestay Geo in the first two months after release; we have also been featured in the Circular Lighting Report. We also worked alongside eFIXX to produce informative videos on the product, and our you can find all of these videos through our Linktree.

The Firestay Geo has been compared to GU10 Lamp products in some cases, but in truth, with a 50,000 hour lifetime, 7 year warranty, and the established supply chain with circular economy considerations and remanufacturing at the forefront of the product's release, the product stands apart as an Integrated Downlight with a difference. We are proud of our GU10 products, and we are looking into ways of increasing efficiency further within our range to bridge the gap between the Firestay Geo and Lamp products, but as things stand, the Firestay Geo is an innovative product which should not be compared to existing products which don't offer true circular economy. Recycling will become secondary to remanufacturing and circular economy in the future as the UK pushes for Net Zero status, and we are ahead of the curve with the release of this product.
Social Media!

We are active across our Social Media channels, particularly on LinkedIn where we post on a daily basis with high quality written, imagery based, and video content. You can find our Social Media accounts through our Linktree here: https://linktr.ee/bell_lighting