Ive got two outside lights wired upto a pir sensor, its wired into a fuse in the garage but its not very bright with only 100w bulbs in each side. Ive removed one of the lights tonight and connected up a 500w floodlight in its place. The light worked fine coming on and off for about 20 mins but then the bulb blew.Is this just a case of a cheap bulb or would the wiring not being able to cope be the problem?The wires are quite thick twin +earth, it only just bends into the light fittting. Would it be ok to run another 500w light in place of the other 100w light or would it just keep blowing the fuse? Any other problems with this set up please let me know.