The other day we put a bunch of recessed lights in a house. The guys didn't look at the labels on the bulbs and some different type bulbs were used. Most were 120 volt BR40 65 watt, a few were 130 volt BR40 75 watt, The 65 watt bulbs were much brighter. I know the 130 volt bulbs won't put out 75 watts unless the voltage is 130, but the difference was huge, the 75's looked like 40's compared to the 65's.
