Martin wrote:
Hi All,
Just bought a GE Energy saving light bulb intended for an outside
light (bottom of the garden).
On the box it states not suitable for use with timers or photo-cell
circuits. Anyone know why? I'd like to run it from a timer or light
detector thingy and leave it on all night.

Martin.

If the timer or whatever has a neutral connection of it own e.g. those plug
in electronic timers, it will be ok.
If the timer relies on a small current through a conventional bulb e.g the
light switch replacement type, it probably won't work.