Because it involves many factors, such as the inverse square law, installation height, beam angle, reflection and absorption, and uniformity requirements. Therefore, it's very complex, and it's not possible to explain all the details here. However, these factors contribute to a total discrepancy of about 12.9. This means that if you know the area and purpose of your space but are unsure about the number and type of lights you need, you might use the following formula to calculate the number of lights required:

Required Number of Lights=Lumen Output per Light (Model)Illuminance (Lux)×Area / Lumen Output per Light

Sure, let's calculate the number of lights needed for your space using the provided formula.

1. Convert the area from square feet to square meters (since lux is typically measured in metric units):

$\text{Area}=50\text{ ft}\times 100\text{ ft}$=5000 ft²

2. Use the provided formula:

 Required Number of Lights=Lumen Output per LightIlluminance (Lux)×Area/Lumen Output per Light​

Assuming the required illuminance for a store is 50 FC (500 lux) (a typical value for commercial spaces):

$\text{Illuminance (Lux)}=500$

$\text{Area}=\; 5000\; ft²$

$\text{Lumen Output per Light}=32000\text{ lumens}$

Now, plug in the values:

$\text{Required Number of Lights}=\frac{50\text{ fc}\times 5000{\text{ ft}}^{\mathrm{²}}\mathrm{}}{32000\text{ lumens}}$

Now, a space of 100ft long and 50ft wide requires that each cubic meter of light can reach more than 500lux, and the number of lights required is:  

10 or 12

If your house is over 20ft tall, you may need 12 lights,

 The actual situation is arranged according to the distance between the lamps, and only 10 or 12 lamps are used.

In addition

We are willing to help electricians or DIYers with creating lighting plans. Just provide us the length, width, and height of the facility and your requirements for illumination and we can offer the lighting layout for you for free.

Different projects have different requirements,we offer DIALUX simulated lighting test service, to help you get more project, no problem!

We need below information:

• (1) The height of warehouse, garage, factory, workshop, etc.
• (2) The watts of traditional lights.
• (3) The ground illumination requirements.

For special lighting plans, just contact us!
Email: support@jclgl-led.com
Phone: +1 7154405721

 Lighting Projects Share

1, ✅ High Bay LED Lights! - Super Bright 150w 24k Lumens - Replacing Warehouse Metal Halide Bulbs.   H2108 150W

Returns & Refunds

Exchange

1. Contact customer support via email: Support@jclgl-led.com
2. Our 5-year warranty means you can contact us for a replacement if you encounter any product issues within this period.

Note:

If your product requires replacement, please include your purchase order number in the email. Additionally, ensure you attach a photo or video showcasing the failure, with the product number visible on the back. Upon completing our review within 48 hours, we will arrange for the delivery of a new product, with all associated expenses covered by JC-LGL Lighting. We stand by our commitment to a genuine 5-year warranty, backed by 17 years of brand reputation.

Warranty:

Subject to the terms and conditions specified in this Limited Warranty, JC-LGL Lighting, is a business of High Bay Company, warrants that lights purchased directly from JC-LGL will be free from defects in material and workmanship until the earlier of five years from the date of manufacture, and 50,000 hours of operation.

Remedy:

- Please note that products with different warranty periods provide different warranty services and warranty time.

1. The products can be returned within 30 days from the date of receipt, but please also ensure the integrity of the products and the return will not affect their secondary sales. The used or installed products can't be returned due to non-quality problems (dislike or no longer need). If there is any objection, please contact the seller;

2. If the malfunction or damage of the products is caused by transportation, the buyer needs to contact us and provide evidence (video & pictures) within 15 days from the date of receiving. Providing the buyer fails to do so or no longer replies to us within 15 days after contact, the buyer will be responsible for any loss.

3. If there are any quality problems over 30 days from the date of receipt, please contact JC-LGL for a warranty with photos or videos showing product problems and JC-LGL will help you solve this problem. Buyers can choose to obtain new lights, but the corresponding costs need to be borne by the buyer. Please refer to the following for the cost of obtaining new lights.

Terms and Conditions:

This Limited Warranty is VOID under these circumstances:
- This limited warranty does not apply to loss or damage to the product caused by: negligence; abuse; misuse; mishandling; improper installation, storage, or maintenance; damage due to fire or acts of God; vandalism; civil disturbances; failure to follow installation, operating, maintenance or environmental instructions.
- Replacement of components with those from other manufacturers.
- Operating the product outside specified electrical values or subjecting it to abnormal use/stress such as under/over voltage conditions, excessive switching cycles, and extreme environmental conditions (e.g., ambient temperature).
- Products not purchased elsewhere on our site, 
- Not the quality of the product itself, or man-made damage,

DISCLAIMER

Please pay attention to the working temperature of the light fixture. If the temperature exceeds the usage limit of the light fixture due to natural or man-made reasons causing damage to the light fixture, the warranty policy won't cover the loss.
In case the product is not available, JC-LGL reserves the right to replace the product with a comparable product.

HOW TO MAKE A WARRANTY CLAIM:

JC-LG Company issues a Return Material Authorization (RMA) for all requests for warranty review. To make a warranty claim, retain the failed Products and notify your JC-LGL sales or customer service representative in writing within 15 days of the failure. After contacting JC-LGL and receiving an RMA number, the Purchaser shall promptly return the Product after receiving instructions regarding if, when, and where to ship the Product. The Product must be returned within 10 days of receiving the RMA number, and the shipping box must be clearly marked with the RMA number. Failure to follow this procedure shall void this Limited Warranty. JC-LGL reserves the right to examine all failed Products to determine the cause of failure and patterns of usage and shall be the sole judge as to whether any Product is defective and covered under this Limited Warranty.