"Rick Hughes" wrote in message
...

"Christian McArdle" wrote in message
. net...
What's poor power factor? Does this mean that an 11W bulb
may be higher than 11W? If so,how much by?

The current and voltage normally rise and fall etc


AFAIK - power factor does not have to be taken into account for domestic
lighting installation.

If you are going to push it to the margin then you do need to be aware of
the pitfalls I have a lamp in front of me, it is marked up as
20W 220-240V 175mA, that == 40VA max

the circuit would have to provide the 40VA