Hi all, I purchased five 30 watt CFL energy savers for a small grow cabinet and the lamps were wired up in parallel. They were first test yesterday, and after about 30 minutes at least one of the lights started to make a buzzing noise followed by a blown plug fuse (only a 3 amp fuse) and an acrid smell which filled the room. After that the lights were retested and one of them blew completely, so I returned two of them to the supermarket and exchanged them for new ones.. After replacement of the two lamps, I did a similar test. The lights lasted longer this time at approximately one hour, before the buzzing noise and acrid smell returned, at which point the lights were turned off and I was starting to think there is something wrong with the way they were wired. After inspection, there were no crossed wires which eliminates a short circuit, so I can't understand what the problem is. Basically the lights work as they should for a period of about 30 - 60 minutes, then they get rather hot (grow box temp of 30 deg Celsius after one hour) and start making the acrid smell and buzzing noise. Out of interest, I noted that for the hour the lights ran, it cost 17 pence to power them! I know the exact price as there is a prepaid electricity meter at the property. So at that rate, it would cost a fortune to run these lights for 3+ months. Does the price of light cost per hour sound correct? If so, I won't continue as it will be way too expensive, if not, can anyone suggest the problems with the lamps? TIA.