Understanding LED Linear T8 tubes
Published August 2016
In our previous two blog posts, we discussed LED linear tube options for your LED lighting retrofit. First we gave an introduction and discussed some safety concerns, and then outlined the three types of LED tubes. Keep reading to learn a final set of variables to consider when selecting LED tubes, and next steps to get your project going on the right foot!
KNOW WHAT YOU ARE TRYING TO ACCOMPLISH WHEN SELECTING LED TUBES
Even when you have the correct combination of linear LED tubes and existing ballast or wiring configuration, simply grabbing an LED tube and installing it may change lighting levels drastically, undoing the original success of a well-designed lighting solution. Safety and compatibility requirements aside, there are two additional primary factors to consider when selecting LED T8 linear lamps to help maintain good lighting design that may already exist in your space. The first is lumen output and the second is the beam angle of the lamp.
When LED tube wattage is too high, the result is an over lit space. This may mean you have more light than you need, and that’s not the end of the world; however, that result means energy is being wasted. You are dismissing potential energy and utility-cost savings. You don’t have the optimum lighting design for your application.
Beam angle is critical. A traditional fluorescent lamp casts light 360 degrees around the linear tube, but T8 LED is available in a range of beam spread from 160 to 325 degrees. Simply put, this beam spread can dramatically affect how a space looks when lit with linear LED. There are specific applications for beam angle, and using the incorrect beam angle could achieve undesired results. For example, a 160-degree beam angle will stripe a fixture and also change the optics of the fixture, once again undoing a well-designed project. A 325-degree beam angle lamp will not “stripe” a fixture and will utilize the optics of the fixture much like a fluorescent bulb.
If you are ready to make a change to energy-efficient LED, and a linear T8 LED seems like the best solution for you, it’s important to understand the variables you will face when confronted with this sizable purchase.
NEXT STEPS FOR A SUCCESSFUL LIGHTING PROJECT
- Look for a neutral vendor, one pushing a single product line or manufacturer should be avoided. Choose someone that can explain the differences between products and price points so you can choose the solution that best fits your needs.
- Ensure you have partnered with a lighting designer that has seen a variety of these lamps perform. One challenge that we face with this constantly improving technology is that photometric data on the lamps can’t be paired with IES fixture files in some instances.
- Ask for case studies in industries similar to yours, or ask to see some products in action. It can be very helpful to see these lamps in person.
- Ask for a test in your space. You may want to hire a reputable lighting partner to install a test area to be sure the results are what you want, and meet your lighting project goals.
- Consider whether or not you need to increase light levels. Ask whether lighting controls would make sense for your business and lighting project goals. Both of these can impact how much energy a lighting project could save for your organization.
- Always consult the utility company’s rebate guide to get the system with the most rebate incentive, a higher priced system may result in a lower NET project cost based on rebates. Without understanding these rebate structures, you may be leaving money on the table.
Deeply consider how you would like to approach your lighting upgrade investment, are you simply looking for greater energy efficiency, or do you want to improve lighting, reduce maintenance expenses, and step in to the future with a well-designed system? If you would like to know more about the benefits of a lighting retrofit beyond energy savings, we recommend our article outlining 6 other reasons to retrofit beyond money and energy savings.
If you’re ready to get started with your energy efficient lighting upgrade, contact our constultants today!