Commercial Lightingin Worcester

Light where the work is, not watts on the ceiling

Lighting is designed to a level that suits the task. The European standard for workplace lighting puts a general office at around five hundred lux at desk height, a retail sales floor at three hundred or more depending on what is being sold, warehouse aisles far lower, and detailed bench work higher again. A common mistake is replacing fittings one for one and ending up with a warehouse lit like an office at four times the necessary cost, or an inspection bench lit like a corridor. The fix is to measure the existing levels first and design to the task.

Glare is the other half and it is the one people feel without naming. A cheap high-output panel in a low ceiling produces a space that is bright and unpleasant, and staff complain about headaches rather than about lighting. Diffuser quality and how the fitting is positioned relative to screens matter as much as the lumen figure on the box.

Then controls, which is where the saving actually sits. Presence detection in stores, toilets and meeting rooms, and daylight dimming on anything near a window, routinely save more than the lamp change does, because the cheapest light is the one that is off. Colour temperature is worth getting right at the same time: cooler light for workshops and warehouses, warmer for hospitality and retail, and one temperature throughout a building rather than a patchwork from years of replacements.

Emergency lighting is a legal duty rather than a choice. Under BS 5266 the fittings need a short function test every month and a full duration test every year, recorded in a log book. The annual test flattens the batteries deliberately, which is what finds the fittings that no longer hold charge, and it is done when the building is empty for obvious reasons. If a lighting scheme is being replaced, the emergency provision is redesigned with it rather than left pointing at where a rack used to be.

What a lighting job includes

Measured first, priced in writing, fitted when you are shut.

• Existing levels measured on the working plane before anything is quoted
• Layout designed to the task, not one fitting swapped for one fitting
• LED fittings with the colour temperature agreed and consistent
• Presence detection and daylight dimming where they will pay
• Emergency lighting designed to BS 5266 and commissioned
• Log book set up, with the monthly and annual tests explained
• Old fittings removed and recycled rather than left in a skip on site
• Certification for the circuits altered

How a lighting job runs

Measure

Actual lux on the working plane, area by area, so the design starts from a reading.

Design and price

Layout, fitting type, colour temperature and controls, priced in writing with the running cost shown.

Install

Out of hours, area by area, so no part of the building is dark during trading.

Commission

Controls set up, emergency fittings commissioned and the log book handed over.

Commercial lighting across Worcester and Worcestershire

Shops and offices in Worcester, units at Droitwich Spa, hospitality in Malvern, and the packhouses and glasshouses around Evesham, where the environment decides the fitting before the lux level does. Also Pershore and Stratford-upon-Avon. A lighting scheme usually touches the boards, which is commercial work, and an EICR that faults the emergency lighting is the most common reason these jobs start. Outside the building, car parks and yards are outdoor lighting.

What lux level the work actually needs

Lighting a commercial space is not about making it bright, it is about making it right for the task. The guidance in CIBSE and BS EN 12464-1 sets maintained illuminance for the activity rather than the room: a general office desk is around 500 lux, a corridor or store is nearer 100, a retail sales floor sits between 300 and 750 depending on what is being sold, and close inspection or fine assembly work climbs well above that. Over-lighting a space costs money twice, once in fittings and again every month on the bill, and it makes a shop look flat. Under-lighting it is a health and safety problem. We take readings in the space as it is before proposing a layout, because the existing level and the glare from what is already there usually decide where fittings should go more than a grid on a drawing does.