Q: | Does the number of LEDs used in a lamp affect the output and the cost? | A: | While the number of LEDs used in a lamp will ultimately impact both the cost and the light output of a lamp, it is important to understand that there are many different LEDs that JWS engineers use in the design of our lamps. Some are very powerful and costly while others can be reliable, but provide lower output at a lower cost. For this reason, the number of LEDs alone is not a good measure of cost or light output of a lamp. |
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Q: | I hear that thermal considerations must be taken into account when designing an LED light. Why is that? | A: | All LEDs decrease in their output over time. JWS engineers are experts at analyzing designs in order to properly manage the thermal properties of each LED. All of our lamps are designed to maintain a minimum of 70% of the original design output (and all lighting regulations, if applicable) after 4 years of continuous operation. |
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Q: | Many lighting companies are simply distributors of cheap lamps from overseas manufacturers, how is JWS different? | A: | JWS is a designer and manufacturer of lighting, not a distributor. The company is a third generation, family-owned corporation and our products are made in the USA, which helps keep America’s manufacturing base strong and creates jobs for hard working Americans. |
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Q: | What is the color temperature of the LED work lamps? | A: | In general, the light color temperature of our LED work lamps is 6,000 K. |
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Q: | How long will the LED work lights last? | A: | While our LED work lights will last much longer, we guarantee consistent light output for 40,000 hours. |
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Q: | Why are some of your lamps dedicated voltage and some multiple voltage? | A: | The advantages of dedicated voltage LED units is that they generally have a higher light output and guarantee no EMI issues. Multi-voltage lights mean fewer stock keeping units (SKUs) to serve a variety of applications. |
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Q: | What is the difference between raw and effective lumens? | A: | Raw Lumens is the LED manufacturer’s rated lumen value for an LED multiplied by the number of LEDs in a lamp. Effective Lumens is the number of lumens that actually make it through to the usable light pattern. The difference between raw and effective output is the result of the efficiencies/inefficiencies of the lamp’s electrical and optical designs. |
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Q: | Will LEDs be getting less expensive? | A: | Color LEDs are at a mature price point and very little change will be seen. White LEDs are changing very rapidly in both technology and efficiency so costs should decrease for at least the next few years. |
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Q: | What is the candlepower of HID lights? | A: | The true “power” of a lamp is measured in luminous flux – the total light output of the lamp. Candlepower is a measurement of the hottest “spot” of the lamp. HID lights have 2-3 times the luminous flux of typical halogen lights. |
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Q: | Is a light that has 2 million candlepower much better than one that has only 1 million candlepower? | A: | Maybe. Candlepower actually isn’t the best measurement of light output because it only measures intensity, not how the light is distributed. Candlepower is determined by using an electronic device known as a goniometer. The goniometer measures the most intense point that a light puts out, but a “2 million candlepower” light may only have a pin-sized point that has that level of intensity – ultimately falling short of a user’s expectations. Instead, we recommend that customers look at the effective lumen rating of a light because that tells the full story of “useful light output.” |
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Q: | Do High Intensity Discharge lights (HID) use more alternator power than halogen lights? | A: | Actually HID lighting uses less power (about 35 watts) than typical halogen lights (50 – 100 watts). This provides more light with less draw on the vehicle’s alternator. |
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Q: | Do high Intensity Discharge lamps (HID) have “blue “ bulbs? | A: | The blue hue that is seen when looking at HID lights is its color temperature. Halogen lamps have a color temperature in the 2,700 K range. HID light’s temperature is 4,100 K. This is much closer to the color temperature of the sun (6,500 K), making driving and working behind HID lights much less fatiguing. |
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Q: | Aren’t High intensity Discharge (HID) lamps expensive? | A: | The initial purchase price for HID lights is more than halogen. However, reduced maintenance, lower power requirements, and increased safety due to less operator fatigue make HID lighting a very cost effective solution for many customers who need to do work at nighttime. |
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Q: | What are the legal requirements for vehicular lighting in the U.S.? | A: | The specific requirements put forth by the National Highway Traffic Safety Administration (NHTSA) vary depending upon the size & type of vehicle. Click here to view our helpful guide covering passenger cars, multipurpose passenger vehicles, trucks, buses and trailers. |
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Q: | What is a “Deutsch” connector? | A: | Deutsch connectors are electrical connectors that are specifically designed for critical applications in harsh environments where dust, dirt, moisture, salt spray and rough terrain can contaminate and/or damage electrical connections. |
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Q: | What is the regulatory standard “IP67?” | A: | IP67 is just one of many Ingress Protection ratings. The IP Code outlines a system of classification for the protection of electrical enclosures against the intrusion of foreign bodies such as tools, dust, moisture, etc. IP67 specifically means that a light is dust proof and is protected from temporary immersion in water 1-meter deep for 30 minutes. Click here for more information on the IP rating system. |
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