Most table lamps have a label on them, the highest i have seen is 60W.
Now the fittings inside those look like brown plastic, after a while this simply goes hard and breaks off.
An incandescent light puts out a hell of a heat, but not a lot of power in fact nothing. You would be better off with a what i call a pigs curly tail, they have their own starter and superior to a normal bulb, you can buy them cheaply and far better.
Any hydroponic shop sells them. Do you have a friend that has a light system set up? if yes check it out, but for gods sake Don't !! look at the light if it is Halogen, you wont be able to drive your car for about an hour, all you will see is black dots in front of your eyes.
