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Compact Fluorescent Flashing.

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My friend still has a collection of compact fluorescent lamps. He has a coiled glass style one in his outside light fitting. It is time switch controlled. It was working well until.....wait for it.............wait for it. Today as it was getting dark and before it had switched on, it was gently strobing dimly. It was regularly lighting dimly and then turning off etc. I suppose the frequency was about 3 Hertz.


Has this strobing anything to do with me connecting up his main earth terminal to the official previously unused U.K.P.N. P.M.E. earth terminal? (All main bonding is in place).


Or, did I just not notice this strange strobing before?


Z.
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    A relative of mine has this effect on a landing light controlled by two-way switching. The house was built circa 1960 and lighting cables did not have earth conductors. The effect is caused by capacitative coupling across the conductors of the strapping cable. It sounds like something similar could be happening in your case, or, as others have suggested, dampness somewhere causing a high-resistance path.
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  • 0
    A relative of mine has this effect on a landing light controlled by two-way switching. The house was built circa 1960 and lighting cables did not have earth conductors. The effect is caused by capacitative coupling across the conductors of the strapping cable. It sounds like something similar could be happening in your case, or, as others have suggested, dampness somewhere causing a high-resistance path.
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