energy saving lightbulbs

[shopper]

can anyone tell me why the instructions of the packaging of energy saving lightbulbs say that they cannot be used with timer switches. I have them in all my tablelamps, and because I come home at different times I would like them to turn on by timer while I am out. Thanks

[1kayvee]

I had the same problem, I bought some timer switches in argos last year that can be used with energy saving lightbulbs, they are great, cost about �10 each I too have them on timer to come on/off at different times. Hope that helps you.

[1kayvee]

Sorry forgot to leave cat, no for you. It's 982/8874 and I've just fished out the leaflet that came with it and it clearly says DO USE WITH ENERGY SAVING BULBS
You can set the timers from dawn-to-dusk or random.

[shopper]

thanks lkayvee, I will certainly buy a couple of them from Argos. Out of curiosity I would like to know why some timers cant be used but the ones you mentioned can.

[woodchopper]

One reason I can think of is that it is bad for the energy saving bulb to be turned on and off at continuously at random - the more you switch on and off a fluorescent lamp the shorter it will last.
As for why it would be bad for a time switch - no idea.
Anyone else got a clue ?

[woodchopper]

Found this on a website -

Manufacturers warn against using some kinds of low energy light bulb with electronic timers or photocells, the reason is not stated but is probably that the surge of current to start the light may damage the electronics."

and:

"Most CFLs must not be used with dimmer switches or timer devices. But, some manufacturers are developing CFLs that will work with a dimmer."

and:

"Do not fit low energy light bulbs in sockets with dimmer switches and electronic timers. Lights on electronic sensors should also not be fitted with low energy bulbs."

[shopper]

thanks woodchopper, I have also tried internet sites but apart from saying not to use timers and dimmers, it is all quite vague. How many people who buy light bulbs bother to read the box they come in. It was only because I was undecided which wattage to buy that I noticed a tiny picture of a timer with a cross through it. I was buying the new bulb to replace a low energy one that I had been using with a timer. I didnt know I wasnt supposed to.

[heathfield]

I have several electronic programmable timers throughout my house and their particular type won't work with low-energy bulbs. If I try, the lamps just keep flashing on and off rapidly. It's probably as Woodchopper says, and is caused by a current surge each time they come on.
Hopefully, some of the more up-to-date electronic timers will be OK, but there shouldn't be any problem using a plug-in mechanical timer with table lamps.

[Toureman]

I have had energy saving bulbs fitted with timers and light sensitive switches for over 2 years now with no problems.

I have only seen warnings about using them with dimmers.