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Just been to a mates house. His lamps keep blowing sometimes with such energy the glass breaks too. The Consumer Unit is a crabtree about 4 years old and the lighting circuit is on a 6a MCB which is tripping when the lamps go. All connections appear to be good and having measured it there is 245v through the circuit. Anyone got any ideas. Being a bit in-experienced i have not come across this yet. Any help greatly appreciated.