I know there are other threads but this is odd so I started a new one. Today I bought a new 300w heat lamp and 2 250w heat lamp bulbs. I put a bulb in the lamp and then hung it up and then plugged the lamp in and the bulb lit up as it should. Not more than 15 seconds later the bulb exploded. Any ideas why? Everything is dry and new. I have it plugged into a dusk to dawn timer with another lamp as well. That lamp is MUCH older and has never had any problems. If it were an electrical cord issue, I would think it would affect both but like I said the other lamp works great. I'm going to try again tomorrow in the daylight but does anyone have any ideas why this would happen? BOTH are brand new.