About the reference and its method

Where the content comes from

From a knowledge base the Address Lighting team built from villa projects, from real customer questions in the showroom and in messages, and from product catalogues and technical datasheets. This material was turned into guides and entries, and the numerical values were checked against international references.

Supervision and review

Content is reviewed under the supervision of Eng. Abdullah Al Balushi, founder and CEO of The Address Group, who founded Address Arch for engineering consultancy and interior design in 2016. Eng. Abdullah is a registered engineering consultant in the Sultanate of Oman and personally oversees major projects from the first consultation through to site supervision. The content is updated whenever more accurate information or a new technology appears.

“A design isn’t complete until it can be built clearly.”

From Eng. Abdullah Al Balushi’s message on the Address Arch website.

References

• European standard EN 12464-1:2021 for indoor workplace lighting (illuminance levels, UGR glare, colour rendering).
• CIBSE (UK) recommendations for lighting levels in homes.
• IEEE 1789-2015 recommended flicker limits for LED.
• ERCO’s published guidance on arranging luminaires and wall washers.
• Published studies on the effect of evening colour temperature on melatonin, including Lee et al. (2018).
• Oman’s national programme to protect the night sky (2022).
• The five principles for responsible outdoor lighting from DarkSky and IES.
• The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute: Lighting Patterns for Homes.
• IEC 60364-7-701 for bathroom zones.
• The UK Institution of Lighting Professionals (ILP), and manufacturers’ pool-lighting guides.

Limits of this reference

The values and rules here are guidance to help you understand the decision and ask the right questions. Final design and electrical installation are the responsibility of a qualified engineer under the regulations in your country.