In message , Andrew Gabriel
writes
In article ,
"Jason" writes:
Hi

I've been looking to replace as many of the bulbs in my house as possible
with low energy ones, and wondered if anyone could help with some advice on
obtaining the following:

- Replacements for 60w ES bulbs, which are switched by PIRs. All of the
lamps I've seen state they're not suitable for dusk/dawn or PIR switches. I
assume this is due to a heavy surge surrent when they're first switched on.
Does anyone know where I can get some that ARE suitable for use with PIR
switches?

The reason is that many dusk/dawn and PIR switches reply on powering
themselves through the lamp filament, and this doesn't generally
work if you use a compact fluorescent. Dusk/dawn and PIR switches
which use a relay will work fine -- can you hear a relay click when
your lights go on and off?

Yeah, I fitted a 'dusk/dawn' sensor that would work with CFL, but for
PIR operated lights which are usually only on for a few minutes it
doesn't seem worth worrying about anyway.

- The highest power candle bulb replacements I've seen are 7w (Screwfix and
Toolstation). They're apparently equivalent to 40w. Does anyone know where
I can get 11w ones, or are the 7w ones alright?

My rule is to multiply the power by 4 times to get the equivalent
filament lamp, so I don't believe 7W will be equivalent to a 40W
lamp. YMMV...

Yeah I use the 4x rule - even at the normal claimed 5x it's only be 35 W

Re availability, look for specialist sellers, they have wider variety
than more generalist sellers. A web search for 'light bulbs' etc. will
turn up a number of retailers.

I've used

http://www.eurobatteries.com/

http://www.gbbulbs.co.uk/

In the last year.

The latter list 11W CFL candle
--
Chris French