You gotta wonder where the light goes. not really landscape lighting, but a light story nonetheless... The other day a client asked me to replace the bulbs in a couple of high voltage fixtures on thier sign beside thier road at a commercial location. I removed the old bulbs that were burned out, could not find a wattage on them, and found on the fixture it would take 150, 300 and 500 watt bulbs. the fixture was located about 7 feet from the sign, fixed in a j-box on the ground, and was about 8 inches by 10 inches rectagular. the sign was from the ground to 5 feet tall and about 7 foot wide. I thought that 150 watts would be plenty, as I would normally give this sign plenty of white light with 2 35 watt 60 degree mr-16 floods on each side. maybe 50 watt bulbs each if they really wanted it searing white. I put in the 150 watts bulbs and noticed the inside of the fixture is pretty much dull aluminum. no problem, I though, this is a 150 watt bulb. I put one in each side of the 2 sided sign and took a look that evening. was i surprised. rather than a bright white light, It was a warm yellow, what I would probably call a 9.5-10 volt low voltage halogen color. Upon checking the voltage at the taps, I got 102 volts. the bulb is a long life 130 volt bulb, so I may go to grainger and see if they have a 110 volt halogen bulb, but also, i gotta tell you, I was underwhelmed by the output regardless. Even with proper voltage and a lower voltage rated bulb, I will only see 30% more light. where do the lumens go? backwards? This is why so many folks use/waste electricity on 300 and 500 watt bulbs, the fixtures just don't reflect out the lumens like a good mr-16. worse/further, these bulbs are only rated at 1500 hours. why don't folks install a good reflective 70 watt metal halide fixtue for the same application and get a 24000 hour bulb and use half the electicity for the same lumens? And of course these folks do not think a reasonable path to energy conservation is paying me to replace these 2 fixtures with a small trans and 4 low voltage fixtures. Since i am not an electricain, I cannot do a high voltage replacement as mentioned above.