Hi, just a quickie until I can contact my local electrician in the morning.
Apologies in advance for my limited understanding of things electrical!
A little earlier on I fitted a Philips energy saving bulb into a standard
bayonet cap fitting replacing a regular light bulb. This light socket is on
a double switched circuit i.e. the bulb is at the top of my stairs and there
are switches controlling it at both the top and bottom of the stairs.
I was a bit disturbed to notice that this energy saving bulb tends to flash
on and off every two or three minutes or so. The regular bulb doesn't
I've tried the energy saving bulb in a variety of other sockets on the
downstairs, upstairs and in my extension and the only socket it flashes on
is the double-switched one at the top of the stairs.
I assume this means the problem is not with either the bulb or the upstairs
ring circuit and lies somewhere between the two switches and the socket.
I asked my father, who seems to think that double switched circuits are
always live regardless of whether the switches are both off. Is this the
case? I wonder whether this means that there is a pulse of current every
couple of minutes or so and the energy saving bulb is sensitive enough to
light up when this current is applied whereas the regular bulb is not.
Or could the circuit be dangerous? I've removed the bulb from the socket as
Thanks in advance!
18 years ago