- What does foot candle mean?
- How many candlepower is a 60 watt bulb?
- What does 5 foot candles mean?
- What’s the difference between lux and foot candles?
- How many watts is a foot candle?
- How many foot candles is daylight?
- How many lumens is 10 foot candles?
- How bright is 40 foot candles?
- How many foot candles is low light?
- How many foot candles do I need in a workshop?
- How do you measure foot candles?
- How many foot candles are in a 100 watt bulb?
- How many foot candles does OSHA require?
- How bright is a Lux?
- How strong is 5000 lumens?
- How strong is 100 lumens?
What does foot candle mean?
A foot-candle (or foot-candle, fc, lm/ft2, or ft-c) is a measurement of light intensity.
One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light..
How many candlepower is a 60 watt bulb?
Your average 60 watt household light bulb produces 650 to 700 lumens when burned under standardized conditions. Therefore you can estimate that a 60 watt household light bulb, burned under average household conditions might produce somewhere between 50 and 55 candle power, give or take…
What does 5 foot candles mean?
Believe it or not, foot candles are the most common unit of measure used by lighting professionals to calculate light levels in businesses and outdoor spaces. In a nutshell, a foot candle is a measurement of light intensity and is defined as the illuminance on a one-square foot surface from a uniform source of light.
What’s the difference between lux and foot candles?
There is no difference between foot candles and lux in respect of what they measure. … The footcandle is an ‘imperial measurement’, while lux is a metric (or SI) measurement.
How many watts is a foot candle?
You can also calculate the number of watts directly from the foot-candles by combining both equations and using the following: Watts = Foot Candles x 0.01609696 This is because 10.76 x 0.001496 = 0.01609696).
How many foot candles is daylight?
1,000 footFull daylight typically equals about 1,000 foot-candles, while an overcast day would have only 100 foot-candles of light. Twilight produces just 1 foot-candle, while a night with a full moon has 0.01 foot-candle and an overcast night has only 0.00001 foot-candle.
How many lumens is 10 foot candles?
Determine the Needed Lumens For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens. See PDF and complete foot candle index.
How bright is 40 foot candles?
In some areas, foot-candles will be higher than 40, and in other areas, it will be lower, but it will average out at 40. You’d need a fixture or multiple fixtures combined that will give you about 40 lumens of light per square foot.
How many foot candles is low light?
Plants referred to as low light intensity plants generally should receive between 50 and 250 foot-candles. Medium-light plants prefer 250 to 1,000 foot-candles. Best growth occurs above 750 foot-candles unless plants also receive extended periods of direct sunlight.
How many foot candles do I need in a workshop?
Recommended Light Levels by SpaceRoom TypeLight Level (Foot Candles)Light Level (Lux)Retail Sales20-50 FC200-500 luxStairway5-10 FC50-100 luxStorage Room – General5-20 FC50-200 luxWorkshop30-75 FC300-750 lux22 more rows•Mar 3, 2020
How do you measure foot candles?
To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.
How many foot candles are in a 100 watt bulb?
400 foot candlesTheir efficiency is in the range of 4 lumens per watt. This means that a 100 watt bulb will generate 400 lumens – TOTAL. (Here’s the big leap) Now, if we COULD reflect all of that 400 lumens onto 1 square foot we would get a light intensity of 400 foot candles.
How many foot candles does OSHA require?
5 footFoot-Candles in the OSHA Standards. In standard 29 CFR 1926.56(a), OSHA lists the minimum amount of light for operating zones encountered in the construction industry. For warehouses and similar indoor spaces, this standard requires illumination of at least 5 foot-candles.
How bright is a Lux?
One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd·sr/m2. A flux of 1000 lumens, spread uniformly over an area of 1 square metre, lights up that square metre with an illuminance of 1000 lux. However, the same 1000 lumens spread out over 10 square metres produces a dimmer illuminance of only 100 lux.
How strong is 5000 lumens?
For the average living room of 250 square feet, you’ll need 5,000 lumens as your primary light source (20 lumens x 250 square feet), equivalent to about five 100 watt incandescent light bulbs, five 23 watt CFLs, or eight 10 watt LED light bulbs.
How strong is 100 lumens?
100 lumens is considered bright enough for most walkways — including commercial properties. 100 lumens is equivalent to about 20 watts.