This question already has an answer here:
I have a light fixture that lists the maximum bulb wattage as 60W. Right now, I have a standard incandescent bulb in place. Since there is only one light in the room, a single bulb is not bright enough. Can I safely switch to CFLs or LEDs with a greater Lumen output than the standard 60 incandescent as long as I don't go over the 60W draw?