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PX - Lamp Life

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PX
  • 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.
  • Voltage can be regulated by adjusting circuit load/run.
  • To determine circuit voltage, use a digital voltmeter.
 
Volts at Lamp (AC) Lamp Life of Rate Lumen Output of Rated
13.0 * 50% 350%
12.5 * 75% 175%
12.0 100% 100%
11.5 200% 80%
11.0 300% 75%
10.5 500% 65%
10.0 900% 50%

* This voltage is not recommended

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