Question

What does 50000 lamp life mean?

Answer 1

There are 8,760 hours in a year, so a 50,000 hour lamp is laboratory-rated to last this long, given the daily usage listed: 24 hrs/day 7 days/week 5.7 years. 18 hours per day 7.6 years. 12 hours per day 11.4 years. 8 hours per day 17.1 years.