Has the bulb been verified for proper mounting oriention? What do you mean by this?
Not MH bulbs are equal. Their performace and life expentancy can be shorten based on how the axis of the bulb is mounted in the fixture rather horizonally, at an angle or vertically. I was just looking through a bulb catalog. Some of the bulbs listed life expentancy is reduced by 25% and even 40%. It is dependent on the particular bulb and it axis orientation. typcial bulb life is 15,000 to 20,000 hrs. Presuming (never assume)12 hours a day on average for burn time, 3 to 4 years.
What size wire is it that runs out to the light? I can check that. What is needed for that length?
I would expect to see #10. at 150 feet. It is dependent of the entire length and how the wires are routed.
