Help & Frequently Asked Questions | Lightsave
GUIDES AND FAQ








Lumens FAQs
Q: How do I convert watts to lumens?
A: Conversion depends on the type of bulb. For example, a 60-watt incandescent bulb produces about 800 lumens, whereas an LED bulb uses around 10 watts to produce the same lumens.
Q: Are higher lumens better?
A: Not necessarily. It depends on the application. Higher lumens are ideal for task lighting, while lower lumens are better for ambient lighting.
Q: Can I use LED bulbs in any fixture?
A: Yes, but ensure the fixture is compatible with LEDs, especially dimmable ones.
Q: How do lumens affect energy consumption?
A: Lumens measure light output, not energy consumption. LEDs provide more lumens per watt, meaning they are more energy-efficient than incandescent bulbs.
Q: What are lumens per watt (lm/W)?
A: Lumens per watt is a measure of a light source's efficiency. It indicates how many lumens of light are produced per watt of electricity consumed.
Q: How do lumens impact light distribution?
A: Lumens determine the brightness of a light source, but the design of the fixture and reflectors affect how light is distributed in a space.
Q: What is the difference between lumens and lux?
A: Lumens measure the total light output of a source, while lux measures the intensity of light on a surface. One lux equals one lumen per square meter.
Q: Do lumens decrease over time?
A: Yes, most light sources experience lumen depreciation, meaning their light output decreases over time. LED bulbs have a slower rate of lumen depreciation compared to other types.
Q: How can I measure lumens in my space?
A: You can use a light meter to measure the lumens in a specific area. This tool helps ensure you achieve the desired brightness for your space.
Q: Are lumens affected by colour temperature?
A: No, lumens measure brightness, while colour temperature measures the colour of the light. However, colour temperature can affect the perceived brightness of a space.
Q: How many lumens do I need for outdoor lighting?
A: The lumen requirement for outdoor lighting varies. Pathway lights may need 100-200 lumens, while security lights might require 700-1,300 lumens.
Q: Can I mix bulbs with different lumen outputs in one fixture?
A: It is generally not recommended to mix bulbs with significantly different lumen outputs in one fixture as it can result in uneven lighting.