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Premier Lighting Case Study:...Retrofitting Fluorescent High Bays to LED

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October 2015

Premier Lighting Case Study: Retrofitting Fluorescent High Bays to LED

6-Lamp LED T8 Fixtures at Frattalone

Goal:

Premier Lighting had retrofitted Frattalone's lighting from 400 watt metal halides to 6-lamp T8 fluorescent fixtures back in 2007. LED T8 lighting was not a viable option at that point, but with recent advancements in LED technology it was time to come back in and see if retrofitting those fluorescent T8 lamps to LED made sense.

Assessment:

The 2007 HID-to-Fluorescent retrofit improved Frattalone's lighting drastically. The energy and maintenance savings that were gained allowed them to reach payback for the project in just over a year. But being that eight years had passed since the first retrofit, the fluorescent T8 lamps and ballasts were beginning to die out, making it tough to know if they should replace the ballasts, lamps, or both. This resulted in nagging maintenance issues needing to be done to keep the six-lamp fluorescent T8 fixtures going.

Solution:

With the fluorescent ballasts being over five years old, it was a simple choice to replace them with Type B LED T8 bulbs that bypass the ballast. In this retrofit, the fluorescent bulbs were taken out, the ballasts were removed, the sockets were changed, and LED T8 lamps were installed directly to the line voltage in the fixtures.

Retrofitting Recessed Can Lighting to LED

There are many inefficient and costly-to-maintain compact fluorescent and HID recessed can lights that should be converted to LED. Because of the variety of options in the marketplace, the trick is how to retrofit the recessed can to LED. Here are the steps to take prior to deciding your best option:

1. Where is the recessed can being used?

2. What is the size of the opening in the recessed can (most common 4, 6, or 8 inch)? Measure the inside diameter of the can.

3. What is the voltage of the recessed can (120 volt or 277 volt)?

4. What are the current light bulbs in the fixture?

5. How many light bulbs are in the fixture?

6. How are the light bulbs mounted in the fixture - base horizontal or base vertical?

7. What is the current ballast in the fixture?

8. How long has the ballast been in operation?

9. What type of light socket is in place currently (plug-in or screw-in)?

10. Are the light bulb sockets in good condition?

11. Is there a trim ring or lens in the current fixture (take a picture inside the can)?

12. Do you need more light, less light, or about the same amount?

13. Does it need to be dimmable?

Once these questions are answered, you will be able to narrow down your choices out of the following options:

A. Replace your existing light bulb with an LED bulb.

B. Gut the existing fixture and install an LED insert.

C. Replace the entire fixture with a new LED can.