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What are the recent changes to the Building Uses Classes Regulations?

All buildings in England are defined within one of the ‘Use Classes’ given in the Town and County Planning (Use Classes) Order 1987. The UK Government has implemented amended regulations, which came into force on the 1st of September 2020, to the Use Classes Order and the Permitted Development Rights.

From the 1st of September 2020, The Town and Country Planning (Use Classes) (Amendment) (England) Regulations 2020 came into force where parts of these regulations were either revoked or amended whilst they also created new use classes. Came into force 1st August 2021.

Read more in our blog.

Building Regulations

What is the interaction between ANSI/IES LM79, ANSI/IES LM80 & ANSI/IES TM21 and how do they assess LED lighting?

The standards of ANSI/IES LM-79-19, ANSI/IES LM-80-20 and ANSI/IES TM21-19 are documents which are all used to determine the performance metrics of LED light sources, listing the recommendations on the assessment of the maintenance of the luminous flux for LED-based lighting, and whilst they might work together, they do not in any way provide related measurements.

Read more in our blog.

What are the changes to the Building Regulations Part L on the Conservation of Fuel and Power in England?

The latest version of the Building Regulations 2010 for use in England was published on the 15th of December 2021, in two separate documents of the Approved Document L on the Conservation of Fuel and Power, with Volume 1 being for Dwellings and Volume 2 being for Buildings other than dwellings. take effect on 15th of June 2022.

Read more in our blog article.

Lighting overview

What is LED lighting?

A light emiting diode is a device consisting of a semiconductor which emits light energy when an electrical current is passed through it. LEDs can be used for a variety of lighting applications.

What is Anti-Ligature?

This is a luminaire that is free from points where a cord could be fastened to create a ligature point.

For further information, please refer to our Technical A-Z, which can be found at the back of our current catalogue & and also viewed as a PDF.

What is a Beam Angle?

The beam angle is the point at which the light output Lumens drop below 50% of the total light output. LED beam angles typically vary between 10° - 120°. The beam angle is the area where the light is at its most intense.

What is LM80?

All light sources degrade over time. LM80 is the method for measuring how much lumen depreciation the light source will suffer. This is not to be confused with an estimation of life. LED's typically do not fail as they have no filament to burn to end their life, rather degrade beyond useful life output.


What is Power Factor and how does it affect the LED lighting installation?

Power Factor is a way of describing how efficiently the electrical power is consumed and refers to the power within an alternating current (AC) electrical circuit, for a single piece of equipment, such as a light fitting.

The lower the value of Power Factor, means the less efficient the light fitting is in converting the apparent power into the useful power required to illuminate the fitting.

Read more in our blog.


I have a question regarding the OCTO range

If you have any questions regarding the OCTO product range please take a look at the OCTO FAQs: http://octouk.com/wp-content/uploads/2018/08/OCTO-App-FAQs.pdf 


What is the MacAdam Ellipse?

The CIE provides a methodology for mapping the perceived colour onto the unit plane of an ‘x’, ‘y’ graph, where a pair of chromaticity coordinates for the light source corresponded to a unique colour point of light, with its use being a measure of colour difference of a light source and which has become common practice in the lighting industry.

Read more in our blog article.

Colour Quality Scale (CQS)

What is CQS?

The method for Colour Quality Scale is derived from the sample test method used in the CIE Colour Rendering Index but is based upon a pallet of 15 Munsall sample colours which were selected to overcome the limitations of CRI, where it disadvantages light sources which show increased object saturation when viewed against the reference illuminant.

Read more in our blog article.


How much strip can be run from 1 driver?

AD30W/12V 4mtrs (Adder) 2mtrs (Cobra)
AD75W/12V 10mtrs (Adder) 5mtrs (Cobra)
ADDIM75W/12V 10mtrs (Adder) 5mtrs (Cobra)

Can the strip be cut?

Yes, but only at the cutting points. The remainder of the strip would become a dead end.

When would the amplifier (ACLED/AMP/TOUCH) be used?

An amplifier can be added to synchronise larger installations. 1 amplifier is required every 5mtrs, after the initial run on Cobra RGB & every 10mtrs after the initial run on Adder.

Tutorial video

If you are still having difficulty installing our LED strip, please refer to our tutorial video: https://www.youtube.com/watch?v=2BuNRqwW5T4

What are the wiring requirements for each of your LED strip range? (RGB / White / White (Dimmable)/ OCTO RGBW)

Colour Rendering Index (Ra)

What is CRI?

The new metric proposed an approach which relied on more extensive testing to evaluate light source colour rendition and is known as TM-30. This test method for evaluating light source colour rendition proposed a palette of 99 colour samples, distributed uniformly across the colour space, to measure the Gamut Index as well as the Fidelity Index by using a blend of reference sources at a CCT of between 4500K and 5500K, alongside generating a Colour Vector Graphic for the visual description of hue and saturation.

Read more in our blog here.


What is the colour temperature of a lamp and how is it obtained?

Light sources all have a colour temperature which will dictate whether the light emitted is either of a warm colour, an intermediate or neutral colour, a cool colour or a cold colour. The higher the colour temperature, the cooler, the colour appearance of the light source. The Colour Temperature is a description of the warmth or coolness of a light source. It is most simply, a method of demonstrating the colour characteristics of light, usually either as warm (yellowish) colour or a cool (bluish) colour.

Read more in our blog article.


What type of dimming do Ansell offer & how are these wired?

There are four types of dimming shown here:
• Switch-Dim Dimming = DD1
• DSI Dimming = DD2
• DALI Dimming = DD3
• 1-10 Volt Analogue Dimming = DD4
• OCTO Smart Lighting Control


What is Corridor Function?

Corridor Function is a setting of DD dimmable control gear for operation with a PIR (standard on/off). Dimmable control gears reduces light output to 3-5% when an area is unoccupied and increases to full light output when PIR is activated.

Can Ansell LED fittings be dimmed?

Yes, with equipment that facilitates this, normally a dimmable LED driver, along with a suitable dimmer switch. All of our LED products are highlighted in our catalogue as either “dimmable” or “non-dimmable”

Dimming LED Strips

We have many enquiries, asking whether the LED strip can be dimmed. This can be achieved, with both Cobra & Adder, by using the ADDIM75W/12V (switch dim or 1-10V only). Please see ADDIM75W12V Dimmable LED Driver Datasheet and Push-to-Dim Dimming,

What is DALI?

DALI – Digital Addressable Serial Interface = DD3

DALI is a two-way communication system that brings digital technology to lighting and is an international standard for communication, where DALI defines the commands that ballasts need to recognise in order to be considered DALI ballasts.

The system allows individual ballasts to “talk” to the user and allows the user to “talk” back via DALI controllers, computers equipped with appropriate software, or building management systems (BMS). DALI sends messages around, and just like computer networks, those messages are picked up by the ballasts via addresses and the ballast with that address picks it up and follows the instruction given.

Read more in our blog.

What is DSI?

DSI – Digital Serial Interface = DD2

The DSI system was launched into the lighting market back in 1992 and is a more controllable version of digital dimming, which enables the user to group luminaires, operate daylight linked dimming as well as other control options.

The term DSI is a Tridonic name which can be set up with a variety of controls and controllers, some of which are offered by other manufacturers but designed to work with the DSI control gear. When launched, was the first use of digital communication in lighting control and is the precursor to DALI.

Read more in our blog.

What is Mains Dimming?

Dimming residential lighting allows the homeowner to achieve the desired levels of illumination within a room and consequently alter the mood of the environment. The most popular system for a residential lighting installation is known as ‘Phase-cutting’ dimming.

Phase Dimmers works by ‘chopping’ out a part of the mains voltage to the light source which reduces the power being supplied, resulting in a variation of the brightness of the lamp.
Delaying the start or prematurely ending of the phase half-cycle of AC power is known as “phase control” which will regulate the amount of power to the lamp.

There are two types of phase dimming:

Leading Edge Dimming, often referred to as “Triac” or Incandescent Dimming
Trailing Edge Dimming often referred to as ELV Transformer Dimming

What is Switch-Dim?

Switch-Dim = DD1

The concept of a Switch-Dim system is a simplified dimming method which uses a 230 Volt Mains frequency as a signal transmitter through a simple retractive (non-latching) switch.

The Switch-Dim operation is a cost-effective dimming and switching control system using an impulse as the regulator, which is basically a switch with a built-in reversing spring, and as such, the system will work with many of the commercially available push-to-make switches.

Read more in our blog.

What are the main types of dimming available for LED light sources?

There are a number of types of dimming commonly used for LED lighting:

  • Mains Dimming
  • PWM Dimming
  • Switch-Dim Dimming
  • DSI Dimming
  • DALI Dimming
  • 0-10 Volt Analogue Dimming
  • 1-10 Volt Analogue Dimming

What is PWM Dimming?

Pulse Width Modulation Dimming (PWM) works on a similar principle to that of mains dimming in that it is actually turning on and off the LED current for short periods of time and in the case of PWM dimming, the LEDs are driven with full amplitude pulses of current and the width of the pulses is varied to control the apparent brightness.

The current is switched between the values of 0% and 100% of the rated output current which means that the LED source is either at zero current, when ‘OFF’ or at its full rated output current, when ‘ON’.

What is Analogue Dimming?

There are two types of Analogue Dimming, where both are collectively referred to as being Analogue Dimming

0-10 Volt Analogue Dimming

1-10 Volt Analogue Dimming

Both use separate AC power and control supply with one-way communication where the mains power to each of the luminaires in the circuit requires the installation of a 3 core mains supply (Live/Earth/Neutral). The control function is by an additional signal pair cable which carries a low-speed signal, only used to control the dimming level and the usual method of control for this type of dimming system is typically by means of either a rotary dimmer or slider potentiometer.

Read more in our blog.


What is the difference between the terms of Luminance and Illuminance?

The terms of ‘Luminance’ and ‘Illuminance’ appear at first glance to have the same or at the very least a similar meaning, however nothing could be further from the truth. Luminance relates to the amount of light emitted, which either passes through, or is reflected from a surface, whereas Illuminance relates to the amount of light which actually lands on a surface.

Read more in our blog article.


What is the requirement for the replaceability of light sources and control gears within luminaires?

European Union – Commission Regulation (EU) 2019/2020

United Kingdom – Statutory Instrument 2021/1095

The above legislation very much aligned and provides information on a “containing product”, being detailed as a product containing one or more light sources, or separate control gears, or both, including, but not limited to, luminaires that can be taken apart to allow separate verification of the contained light source(s).

Information shall be provided by the manufacturer regarding the replaceability or non-replaceability of light sources and control gears by either professional persons or end-users without permanent damage to the containing product.

Read more in our blog.


Where and when to use track lighting and what are the benefits?

Track mounted lighting equipment is immensely popular and has been used to offer flexibility in highlighting featured objects within many types of environments.

There is two options, Mains Voltage (230Volt) track system which has a mains supply directly into the Live End of the track or a Low Voltage track system which has a reduced voltage supply to the track, such as 24 Volts, with the electrical supply from the mains being operated through a 24 Volt Constant Voltage Non-Dimmable LED Driver positioned remotely.

The greatest benefit from track lighting is that it offers adaptability and flexibility of the system to meet the specific needs of the customer at any time without having to call an electrical contractor to undertake this for you.

Read more in our blog article.

TP(a) or TP (b)

What does it mean when a luminaire is marked as being TP(a) or TP(b)?

Thermoplastic materials used as diffusers in light fittings provides a significant hazard in a fire, where burning droplets can rapidly increase the fire growth rate and smoke produced, which produces extremely hazardous conditions.

When these light fittings are installed to form an integral part of a ceiling (i.e. recessed) they must be either categorised as being TP(a) or TP(b) rated and are to be installed in accordance with the Building Regulations of the appropriate devolved country, in respect of Fire Safety and for the relevant TP rating.

Read more in our blog article.

What is the difference between TP(a) and TP(b)?

Panels that form part of a ceiling (i.e. recessed) must be either TP(a) or TP(b) rated and 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.

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.

What are the tests required to achieve TP(a) or TP(b)?

The diffuser material is to be subjected to a naked flame for 10 seconds and the time taken for the sample to burn between two marks positioned 25mm and 125mm from the end of the sample is measured.

The results of the test will provide the classification of TP rating, where for TP(a), the flame self-extinguished and any afterglow extinguished within 5 seconds of the flame extinguishing and for TP(b), the flame continued to spread along the material but burned at a rate of less than 50 mm/minute.

Read more in our blog.

Passive Infra-Red & Microwave Detection

PIR and Microwave detection methods and what is the difference between them?

A Passive Infra-Red Sensor, commonly referred to as a PIR, is basically an electronic sensor which measures the infrared radiation being detected from objects within its field of view and is generally used for the automatic activation and control of lighting equipment, whereas a microwave sensor is an active device, emitting several very low-level pulses of electromagnetic radiation which strike a target and are then bounced back to the receiving sensor to determine if there are any moving objects within the field of view.

Read more in our blog here.


What is Series & Parallel Wiring?

LED drivers are supplied either Constant Current or Constant Voltage. Both require the LED chips / modules to be wired differently (CC- Series; CV- Parallel).


Series Wiring
Parallel Wiring


What are the different bathroom zones and what do they mean for installing electric lighting equipment?

There are three classified zones and a further zone which is for installations classed as being outside of the other zones

Zone 0 is the area inside the bath or in the shower tray itself and if lighting is required, any fitting which is used must be LV, to a maximum of 12Volts and rated to at least IPX7.

Zone 1 is the area above the bath or shower tray up to a height of 2250mm from the bathroom floor with any fitting installed having a minimum IPX4 rating and if there is a likelihood of water jets being used for cleaning purposes, replace lighting to IPX5.

Zone 2 is the area extending to 600mm outside the perimeter of the bath and to a height of 2250mm from the bathroom floor with any fitting having a minimum IPX4 rating. It is good practice that the area around a wash basin, within a radius of 600mm of any tap is Zone 2 and if there is a likelihood of water jets being used for cleaning purposes, replace lighting to IPX5.

The areas deemed to be outside the Zones are anywhere within the bathroom which are located outside of Zone 0, Zone 1 & Zone 2, subject to their specific limits and where no water jet is likely to be used. Any fitting installed need not have any ingress protection, however if there is any likelihood of water jets ever being used replace the lighting to IPX5.

Full details can be found in the IEE Wiring Regulations.


Read more in our blog article.


What is IP Rating and what are the various degrees of protection from dust and moisture?

All electrical devices are tested to determine a level of resistance against the intrusion of solids and liquids.

Once tested, the product is given an IP rating, which stands for Ingress Protection. IP Rating uses a two-digit code where the first digit is a number value of between 0 & 6, for protection against ingress from a solid object, and the second digit is a number value of between 0 & 9, for resistance against ingress of moisture.

Ingress protection is important as it allows the safe use of lighting equipment within environments where it is possible dust particles and water may get into the fitting and having a suitable IP Rating will give customer confidence in purchasing lighting fittings which are suited to the application into which they are to be installed.

Read more in our blog article

What is IK Rating and what are the various degrees of protection from mechanical impact?

The classification of the degree of protection provided by enclosures, including those containing electrical lighting equipment against mechanical impact.

The term ‘IK’, where the ‘K’ part stands for ‘Kinetic’ relates to the motion of material bodies and the forces of energy associated with them.

IK ratings are defined as IKXX, where “XX” is the number from 00 up to 10, indicating the degree level of protection provided by the enclosure, which includes those containing luminaires, against external mechanical impacts.

IEC 62262:2002 and BS EN 62262:2002 describe a system for classifying the degrees of protection provided by enclosures for electrical equipment against external mechanical impact (IK Code). Whilst this system is suitable for use with most types of electrical equipment, it should not be assumed that all the listed degrees of protection are applicable to a particular type of equipment.

IEC 60068-2-75:2014 provides further detail where this part of IEC 60068 provides three standardized and coordinated test methods for determining the ability of a specimen to withstand specified severities of impact. It is used, in particular, to demonstrate an acceptable level of robustness when assessing the safety of a product and is primarily intended for the testing of electrotechnical items. It consists of the application to the specimen of a prescribed number of impacts defined by their impact energy and applied in the prescribed directions. This part covers energy levels ranging from 0,14j (joules) to 50j (joules).

The degree of protection applies to the complete enclosure and testing is carried out within a temperature range of 15°C - 35°C at an atmospheric pressure of between 860mb and 1060mb and is based upon testing of a new enclosure and to verify protection against mechanical impact, blows shall be applied to the enclosure being tested which is based upon 5 impacts to each face of the enclosure.

IK ratings are defined as IKXX, where “XX” is the number from 00 up to 10, indicating the degree level of protection provided by the enclosure, which includes those containing luminaires, against external mechanical impacts. This is of importance when considering the installation of lighting equipment for the more arduous applications, such as in sports centres and also outdoor working areas, such as in construction.

The different levels of IK ratings relate to the ability of the enclosure to resist varying impact energy levels measured in joules (j) and the International Electrotechnical Commission document, IEC 62262:2002 denotes how protected an enclosure (light fitting) is from mechanical impact, with the ratings at the higher end providing greater tolerance for impact. The British Standard version is BS EN 62262:2002 and is the UK version of the EN Standard, which in turn is the European version of the international standard.


WEEE Compliance - Ireland

Waste Electrical and Electronic Equipment (WEEE) is taken back free of charge on a one-for-one, like-for-like basis. Waste batteries including rechargeable batteries are taken back free of charge. You are not obliged to make any purchase when returning old batteries. Each local authority must also accept household WEEE and small batteries free of charge at its recycling facilities. All WEEE and waste batteries must be recycled and should not be placed in any of your household wheelie bins. Make sure you always recycle all your old electrical goods and batteries.

Recycle IT are the approved recycling agent of WEEE Ireland:

RECYCLE IT, Clondalkin Community Recycling Initiative Limited, Unit 14/2 Crag Terrace, Clondalkin Industrial Estate, Clondalkin, Dublin 22

Lighting Energy Numeric Indicator (LENI)

What is the Lighting Energy Numeric Indicator and how is it calculated?

The latest version of the Building Regulations 2010, Volume 2 being for Buildings other than dwellings for use in England offer details of the calculation process is given as a series of steps, for determining the value of LENI and shall be given in terms of kilowatt hours per square metre of the area per year (kW/m2/year).

Read more in our blog article.


What is the requirement for the replacing of the current energy labels with the new energy labels?

European Union – Commission Regulation (EU) 2019/2015

United Kingdom – Statutory Instrument 2021/1095

Each light source placed on the market as an independent product, not in a containing product, and in packaging, is supplied with a label, printed on that packaging is required to rescale products using a printed label, provided as a sticker, of the same size as the one which already exists at the point of sale within eighteen months after the application of the Regulation.

Read more in our blog.

Lighting Sensors

What types of sensors offer basic lighting control?

Firstly, the installation of any lighting control within an application can provide significant benefits, not only in energy saving, but also in the continued specified performance and the economic life of the lighting fittings.

There are three basic types of control to consider.

Photo Electric Cell Units are basically a switch which operates automatically based upon the amount of ambient light and their function is in two different operations, to switch the lighting on when the ambient lighting level falls below a given value and to switch the lighting off when the ambient lighting level rises above the given value.

Microwave sensors operate by emitting a high frequency microwave beam over a designated area and when that beam is invaded by motion, this determines presence and activates the lighting to be switched on. An ideal solution for external lighting applications as they do not require a hole to be cut into the luminaire.

Passive Infra-Red Sensors (PIR) are electronic sensors which measure Infra-red light radiating from objects within the field of view, working where infra-red radiation enters the segmented front sensor plate and when a change in heat is detected, energy is generated to activate the sensor to operate the lighting.

Read more in our blog article.

Product Warranty

What does our warranty cover?

Ansell Lighting offer a “Return to Base” warranty on their products.  Our sole obligation under this warranty is to repair or replace any defective product(s) during the warranty period.  Any products replaced or repaired by Ansell under warranty, will be warranted for the balance of the original warranty period.

LED warranty period is based on an average usage of eight hours per day and applies where failures exceed a component manufacturers expected failure rate and lumen depreciation.

How long are batteries covered?

It is essential that battery packs within all emergency luminaires are replaced after a four-year period.  All emergency luminaires must be tested in accordance with BS EN 5266-8-2004.  Increased frequency of emergency testing may result in the premature replacement of battery pack, before the standard four-year period.  Batteries are supplied with a 2 years warranty only.


What is glare and what types of glare are there?

The definition of glare is the visual sensation caused by an excessive and uncontrolled brightness of light within the individual’s field of view.

There are two forms of glare, Disability Glare which is defined as directly impairing vision and Discomfort Glare which is defined as perceived discomfort.

There are two types of Glare. Direct Glare which is caused because of high levels of brightness from a light source. Indirect Glare, which is caused by reflected brightness, where the direct light from the source is reflected off a bright surface.

Read more in our blog.

What are the causes of glare?

Glare is a common problem within interior workplaces, which can be caused by inappropriate luminaires giving excessive brightness either directly into the line of sight of individuals or can be because of being ‘bounced off’ reflective surfaces, such as computer screens, whiteboards, etc.

This can cause significant disruption for the occupants of interior workspaces such as in offices, in terms of individuals experiencing headaches & eye trouble, leading to employee absences.

Read more in our blog article.


How do I make a true comparison of the various lighting schemes received from different manufacturers for the same project?

Generally, the completed project will have been sent out as a single document, created from a portfolio of sections contained within the printout section of the lighting software programme and in reviewing the technical aspects of each design, the best advice on offer for individuals reviewing a received lighting scheme, is to make a proper comparison between each of the designed solutions based wholly upon the technical attributes of the design, rather than that of just the bottom-line quotation value.

Read the blog article to learn more.


What is the minimum number of emergency light fittings allowed in a space which forms part of an escape route?

The standard states that the emergency lighting scheme design should be based upon worst conditions with minimum light output and maximum glare limits of luminaires during operating life and based only on direct light from luminaires.

The standard states in relating to emergency escape lighting system design, in which the provision of a highly reliable emergency escape lighting is essential and the illumination provided by the emergency escape lighting system of a compartment of the escape route shall be from two or more luminaires, so that the failure of one luminaire does not plunge the route into total darkness or make the directional finding effect of the system ineffective.

Please read our blog for more information.

Emergency lighting for external applications

What are the requirements and which fitting provides the ideal emergency lighting solution for along the side of buildings?

The requirements for emergency lighting are given in a number of standards, namely BS 5266-1:2016, BE EN 1838:2013 and BS EN 50172:2004 and where the Ansell Wolf provides the ideal solution in being a modern, robust die-cast aluminium low glare wall pack fitting, suitable for both commercial and industrial applications.

Read more in our blog article.


What are Self-Test Emergency Light Fittings?

These fittings utilise an accurate internal clock which is programmed to interrupt the permanent mains supply at set intervals, thus initiating emergency lighting tests. These units are supplied pre-programmed to initiate short duration tests once every month, a one third duration test after six months and a full duration test once every 12 months.

Read the installation instructions here.

What is Self-Test emergency and how can it benefit the end user?

A Self-Test system is basically an intelligent emergency system, which is integral to each luminaire, and which conducts routine functional and duration testing in-line with the relevant standards, providing great benefits to the end user client in that previously conventional techniques used for the testing procedure were reliant upon the manual process, where the automated system offers full compliance, without the need for the outdated manual process.

Read more in our blog.


What are the requirements for testing emergency lighting systems?

Firstly, the procedure for the testing of the emergency lighting equipment installed within buildings is a mandatory requirement to allow the occupants the opportunity to escape safety in the event of an emergency.

The following minimum inspections and tests shall be carried out at the intervals recommended to and the regulating authority may require specific tests.

Daily – Indicators shall be visually inspected for correct operation.

Monthly – Short duration tests by switching on, in the emergency mode, each luminaire and each internally illuminated exit sign from its battery

Annually – Full rated duration test in accordance with the manufacturer's information.

Wi Fi

What is Wi-Fi?

The Wi-Fi system was launched for consumer use back in 1997 and in the same year, the Institute of Electrical and Electronics Engineers created the first WLAN (Wireless Local Area Network) standard, which is a method of wireless distribution taking place between two or more devices, using high-frequency radio waves, which includes an access point to the Internet, allowing its flexible and continued use whilst remaining within the area of coverage. 

Read more in our blog.

Pupil Lumens

What are ‘Pupil Lumens’ and how to they affect how an individual see a lighting installation?

The pupil lumens is a measurement of the light which stimulates the rods within the eyes to determine the scotopic lumen output and the total visually effective number of lumens to illuminate an installation.

Read more in our blog.


Why are LED Light Sources measured in Lumens and not in Watts as they have been for years?

The basic answer is the ‘Watt’ is a measurement of energy consumption, whereas the lumen is a measurement of light output, and the idea of installing more power to gain more light is now not considered as being either energy efficient or environmentally sustainable.

Read more in our blog.


What are the various types of battery technology available for use with the emergency lighting fittings and signs?

The term ‘battery’ is used to describe a chemical device two or more cells which has the ability to store chemical energy and is converted into Direct Current. Whilst everyone calls this a ‘battery’, its correct term is in fact a ‘cell’. 

There are basically two different types of batteries, a Primary Battery, which is not rechargeable and a Secondary Battery, which is rechargeable.

The types of rechargeable cells used for emergency lighting are:





Read more in our blog.


What is to be considered in providing lighting for use by gamers?

It is the intention of gaming enthusiasts to create the ideal environment in which they can achieve most from the gaming experience and it would appear that performance can be directly attributed to having an ideal lighting installation within the space.

Creating that optimum environment needs a different approach and the solution is by electric lighting, where the ambience can be created by the use of appropriate lighting equipment which can be used during the periods of gaming.

Warm lighting colours within the space can induce an atmosphere of relaxation, a situation to be avoided, whereas the cooler colours of a higher colour temperature towards that of daylight, alongside the introduction of higher levels of illuminance are considered as being more beneficial in creating an environment where the gamer can concentrate and remain alert over longer periods of duration, whilst also enhancing the aesthetic appeal of the space. 

Read more in our blog article.


What is emergency lighting, why is it required, who is responsible & what legislation covers its operation?

Emergency lighting is provided for use when the power supply to the normal lighting fails and therefore must be powered from a source independent of that supplying the normal mains lighting.

It is a mandatory requirement to allow the occupants the opportunity to escape safety in the event of an emergency

There are a number of documents published for emergency lighting:

BS 5266-1:2016 – Emergency lighting - Part 1: Code of practice for the emergency lighting of premises

BS EN 1838:2013 – Lighting Application – Emergency Lighting

BS EN 50172:2004 (BS 5266-8:2004) – Emergency escape lighting systems

Read more in our blog

What is the requirement for testing of emergency lighting systems?

According to BS EN 50172:2004, the purpose in the provision of emergency escape lighting is to ensure that lighting is provided both promptly and automatically and for a suitable duration of time, upon the failure of the power supply to the normal lighting.

With regard to routine inspections and tests, BS 5266-1:2016 states that the emergency lighting systems should be inspected and tested at regular intervals in accordance with BS EN 50172 and where a functional operation should be checked at least every month. The testing of full rated duration should be performed on each emergency luminaire at least annually.

Read more in our blog.

Is there one single fitting which offers the flexibility of specifying exit signage?

There is, the Adler Exit Sign, from Ansell Lighting is that one for all solution, in offering five different mounting options of suspended, recessed, surface, wall surface and side arm wall mounting, as well as 2-part legends allowing the option of multiple directions from just one legend kit.

Read the blog article to find out more.


What is the required information to be shown on an emergency lighting sign so as to make it compliant?

The installation of emergency lighting and signage needs to be provided within many types of buildings, as this allows for employees and visitors to safely evacuate the building to a place of safety in the case of an emergency.

The signage should be installed so that there is no ambiguity as to the direction required to safely escape from the building.

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What is the requirement when looking to offer external lighting in close proximity to Bats?

The first point to get across is that lighting installed within the vicinity of a bat roost, which is deemed to cause disturbance to the bat or it’s roost, may constitute a legal offence.

Before installing any lighting equipment, and if it is known that a bat population is located, then the appropriate bat safety group should be consulted in order that they can assess the situation.

In considering the location of lighting fittings, the bat roost, as well as including the access points, should NOT be directly illuminated under any circumstances.

The design of lighting installation needs to be implemented with extreme care and this is best achieved by contacting a lighting designer at Ansell Lighting to assist in this process.

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ZLED Range

How does the new range of Z LED Highbay and Lowbay fittings offer a solution for industrial and commercial projects?

The 3 Highbay and single Lowbay variances, encompass 15 different wattage and lamp colour options of luminaire selection across the range, and with the various additional dimming, lighting control, emergency, and sensor options, as well as a range of reflector, lens, and mounting bracket assemblies, this makes this an extensive range, which presents the specifier with the opportunity to select the optimum fitting solution for their particular application.

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Aztec Floodlight

What column mounting options are available to fit the Aztec floodlight to a lighting column?

To assist customers in lighting projects where a single floodlight is to be installed onto a single column, Ansell Lighting has added to the Aztec range of floodlights, single post-top brackets and column clamps for the most common tubular steel columns used in many commercial and industrial applications, that being for 76mm and 60mm diameter tubular steel lighting columns.

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What is the classification process for buildings in respect of protection from fire?

When installing materials into a building against the potential risk of fire, there is a requirement to look at ‘Fire Reaction’ and ‘Fire Resistance’.

Fire Reaction constitutes a testing and classification process to determine the reaction to fire of building construction materials and in their contribution to the growth of a fire within a building.

Fire Resistance is an important and detailed requirement for buildings where fire resistance is expressed as the number of minutes of time duration where the building material and/or its component has the ability to withstand and resist the effects caused and result from a fire.

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