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Outdoor Landscape Lighting

Lamp Life. Hope this helps.


Lamp life is rated in hours of operation. If lamps are rated for 4000 hours at 12 volts it means that at 4000 hours, 50% of the lamps are still working and 50% are not.

  • For maximum light output, tune lighting circuits to provide between 11.5 and 12.0 volts as measured at lamp terminals when all of the lamps on the circuit are operating.
  • For longer lamp life, adjust voltage down so lamps receive between 10.5 and 11.5 volts at the lamp terminals.
  • Adjusting circuit load/run by using FX MultiTap Transformers can regulate voltage.
  • To determine circuit voltage, use FX Digital Voltmeter.

For more information on voltage loading and run length consult our Circuiting Guidelines.


Volts at Lamp Lamp Life of Rated Lumen Output of Rated
60% 340%
75% 175%

200% 80%
300% 75%
500% 65%
900% 50%

The North Star Approach: Locally owned and operated in Scottsdale, Arizona, Todd Meyer and his team at North Star Outdoor Lighting have become a reputable leader in landscape lighting design and installation for residential and commercial properties. Our technicians are experienced and certified, with outstanding references.

Looking for fast, reliable, honest service? We provide our clients with truly professional outdoor lighting services and only use the highest quality lighting components in our systems from premium manufacturers and believe that lighting installation must be done in a timely fashion. No projects gets put on the back burner!

We understand the importance of a good reputation in this industry, and truly love what we do. We are proud to stand behind all of our work with a 100% satisfaction guarantee.

Our designers are FX Luminaire Designer Certified. FX Luminaire products come with a 10 year warranty. Their commitment to designing and fabricating the very finest components will bring you years of trouble free enjoyment in any FX lighting system, and we are proud to install only the highest quality for our clients.