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High Bay LED Light Calculator

Number of Lights Formula:

\[ \text{Number of Lights} = \frac{FC \times Area}{Lumens\_per\_light} \]

fc
ft²
lm/light

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1. What is a High Bay LED Light Calculator?

Definition: This calculator estimates the number of high bay LED lights needed for a given area based on desired illumination level (foot-candles), area size, and light output.

Purpose: It helps facility managers, electricians, and lighting designers determine how many high bay fixtures are required for proper illumination in industrial or commercial spaces.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \text{Number of Lights} = \frac{FC \times Area}{Lumens\_per\_light} \]

Where:

Explanation: The total lumens needed (FC × Area) is divided by the lumens provided by each fixture to determine how many fixtures are required.

3. Importance of Proper Lighting Calculation

Details: Accurate lighting calculations ensure adequate illumination for safety and productivity while avoiding over-lighting which wastes energy.

4. Using the Calculator

Tips: Enter the desired foot-candle level (typically 30-100 fc for industrial spaces), area in square feet, and lumens per fixture (default 20,000 lm). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical foot-candle requirements?
A: Warehouses typically need 10-30 fc, manufacturing 30-100 fc, and retail spaces 50-100 fc depending on tasks.

Q2: How do I find lumens per light?
A: Check the product specifications of your high bay LED fixtures (typically 15,000-40,000 lumens).

Q3: Does this account for light loss factors?
A: No, consider multiplying the result by 1.2-1.5 to account for fixture depreciation and dirt accumulation.

Q4: What's the difference between lux and foot-candles?
A: 1 foot-candle = 10.764 lux. Foot-candles are commonly used in the US, lux internationally.

Q5: How does mounting height affect the calculation?
A: Higher mounting may require more fixtures or higher lumen output to achieve the same FC at floor level.

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