When it comes to lighting design for residential spaces, there are indeed guidelines and best practices that can help you effectively light each room in your house. Here are some considerations for each of the rooms you mentioned:
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Big Room with Kitchen, Living Room, and Dining Room:
- Given that this is a multi-functional space with different areas, it's best to incorporate multiple light sources to provide flexibility.
- Consider a combination of overhead lighting for general illumination, task lighting for specific activities (such as pendant lights over the kitchen island or under-cabinet lighting), and accent lighting to highlight architectural features or artwork.
- Aim for an overall lumen output of around 300-500 lumens per square meter for general lighting, adjusting based on the specific needs of each area.
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Toilet:
- For a toilet or powder room, a single overhead light fixture is usually sufficient.