Why does one bulb work when another doesn't?

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Old 10-07-12, 10:04 AM
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Lightbulb Why does one bulb work when another doesn't?

I have been replacing wall lights in my hall. There are three, two are the new ones and one is still the old fixture. All three take the same E27 golf ball type bulb. I have three of these bulbs, two are identical and the third bulb is a different make but still 240V 40W.

My problem is this: The different bulb works in all three fixtures but the other two only work in the old fixture. Why?

I do realise I can just go and get new bulbs but this frustrated me and I'd like to know if there is a reason other than the DIY gods wanted me to burst a blood vessel. Your help is greatly appreciated!
 
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Old 10-07-12, 10:25 AM
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Not familiar with your rules and regulations....but I wonder if the new fixtures don't have some sort of current limiter and the 2 identical bulbs may be just over their limit? That's assuming the fixtures are rated at 40W?

That's been known to happen here in the States with ceiling fan lights.
 
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