Trên 200W LED lighting

Wattage is the power a luminaire draws, not how bright it is. Brightness is measured in lumens (lm), and lumens per watt tells you how efficient the fixture is. This is the easiest mistake in a retrofit: a 100W LED does not replace a 100W discharge lamp one-for-one — it typically replaces a 250–400W one. Choose wattage by working from the target illuminance for the space, the mounting height and the area, then divide into fixture count; never scale from the old wattage. Over-specifying wastes energy and causes glare, especially under low ceilings.

Technical documents

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