I've just had a few security light lamps fall over, the self contained
ones with the 500 watt flood lamp in, and went to the local wholesalers
yesterday to get a dozen replacements.

Was told that they don't stock them anymore and there're being phased
out and we've now got to use a fluorescent replacement one at 5 times
the price!. Just tried one and its surprisingly bright 'tho not as good
as the olde 500 watt tungsten type. However they are using a hellvua lot
less power and I'm quite surprised to see that they light up right away
with no flicker or any other artefacts.

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

cheers..
--
Tony Sayer

On 29 Oct, 21:53, tony sayer wrote:

Seeing that this might be a good idea does anyone have much experience
of these

The bare bulbs are about 7 quid from discount-electrical.co.uk
They're OK and useful, but they're no replacement for an nhundred W
halogen. They failed as my decorating light (shows lumpy walls and
missing paint) and my woodturning lathe light.

I'm mostly using 150W halogens as security floodlights, i.e. instant
on, bright, shouldn't normally be on so I don't care about
consumption. For "courtesy" outdoor lights, I'm using 20W CFLs in
coppaslip'ed BC bases.

"tony sayer" wrote in message
...

I've just had a few security light lamps fall over, the self contained
ones with the 500 watt flood lamp in, and went to the local wholesalers
yesterday to get a dozen replacements.

Was told that they don't stock them anymore and there're being phased
out and we've now got to use a fluorescent replacement one at 5 times
the price!. Just tried one and its surprisingly bright 'tho not as good
as the olde 500 watt tungsten type. However they are using a hellvua lot
less power and I'm quite surprised to see that they light up right away
with no flicker or any other artefacts.

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

Lidl had some PIR flood lights with 23(or was it 26?) watt fluorescents in
last week for £7.99.
They weren't pretty but they are cheap.

On Oct 29, 9:53*pm, tony sayer wrote:
I've just had a few security light lamps fall over, the self contained
ones with the 500 watt flood lamp in, and went to the local wholesalers
yesterday to get a dozen replacements.

Was told that they don't stock them anymore and there're being phased
out and we've now got to use a fluorescent replacement one at 5 times
the price!. Just tried one and its surprisingly bright 'tho not as good
as the olde 500 watt tungsten type. However they are using a hellvua lot
less power and I'm quite surprised to see that they light up right away
with no flicker or any other artefacts.

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

cheers..
--
Tony Sayer

One of the advantages of the CF in fittings used outside is that lamp
lifespan is longer because they're not so susceptible to vibration
damage caused by wind. Even with the CF in position they're much
neater than most other types of lamp, if that's an issue.

"Andy Dingley" wrote...

The bare bulbs are about 7 quid from discount-electrical.co.uk
They're OK and useful, but they're no replacement for an nhundred W
halogen. They failed as my decorating light (shows lumpy walls and
missing paint) and my woodturning *lathe light*.



* I'm using a 50W 12V halogen proper-incandescent in my lathe's Danglepoise
(after bolting in the right holder), any type of fluorescent's a bad idea on
rotating machinery as they can "strobe" at particular speeds and the 4-jaw
chuck turning at 1500 RPM can appear to be stationary - until it meets
fingers...

The 75W halogen B.C. bulbs in the supermarkets give a pretty good work
light, save *a bit of* energy compared to 100W tungstens and have a better
colour balance - I like 'em! A bunch of 'em in the Shed of Danger! To me the
CFLs, mains LEDs etc are OK for lighting the lav', hallways and the porch
but the colour rendering makes me a bit nauseous

B&Q seem to have regular bargain bins of 2-packs of 300W and 150W linear
halogens to fit security lights - at £1 a pair, I've stocked up for the
foreseeable future!

Dave H.
--
(The engineer formerly known as Homeless)

"Rules are for the obedience of fools, and the guidance of wise men" -
Douglas Bader

In article ,
tony sayer writes:

I've just had a few security light lamps fall over, the self contained
ones with the 500 watt flood lamp in, and went to the local wholesalers
yesterday to get a dozen replacements.

Was told that they don't stock them anymore and there're being phased
out and we've now got to use a fluorescent replacement one at 5 times
the price!. Just tried one and its surprisingly bright 'tho not as good
as the olde 500 watt tungsten type. However they are using a hellvua lot
less power and I'm quite surprised to see that they light up right away
with no flicker or any other artefacts.

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

I estimate the 36W spiral is about same light output as 100W halogen
in these reflector fittings. Being a significantly larger light source
than a 500W filament, the beam will be less controlled and wider angle.

The one I've seen had a very cold/blue tube, which I wouldn't want,
but I would hope that you can get more suitable colour tubes.

I keep thinking how I might use the tube in a light of my own design.
It has the potential to be one of the most efficient small fluorescent
light sources with reasonably high output. Unfortunately, using this
inside a close-fitting reflector such as with the 500W-look-a-like lights
reduces efficiency. In a more efficient fitting, it will probably come
close to 150W equivalent output.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

cheers..
--
Tony Sayer

One of the advantages of the CF in fittings used outside is that lamp
lifespan is longer because they're not so susceptible to vibration
damage caused by wind. Even with the CF in position they're much
neater than most other types of lamp, if that's an issue.


Good point that, as where there're are intended to go it is a bit high
up there and they will vibrate a bit too. The 21 watt replacement lamp
is as expected nowhere near as bright as a 500 watt "thermal" bulb but
we can duplicate them so perhaps it will be OK and of course if one bulb
blows then there will be some light to suffice..

JOOI is there another type of bulb/light that produces that same "ish"
sort of light as a 500 watt halogen bulb floodlight but gives a white
light that comes up pretty quickly?.

Doesn't matter at all if its a different fitment...

Cheers...

--
Tony Sayer

On 30 Oct,
tony sayer wrote:


JOOI is there another type of bulb/light that produces that same "ish"
sort of light as a 500 watt halogen bulb floodlight but gives a white
light that comes up pretty quickly?.

Doesn't matter at all if its a different fitment...

Cheers...
Metal Halide

http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Slimline+Metal+Halide+Floodlight+Black+70w/d220/sd2768/p27660

Or similar (that's first google hit).

--
B Thumbs
Change lycos to yahoo to reply

On Sat, 30 Oct 2010 19:02:03 +0100, wrote:


Metal Halide

http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Slimline+Metal+Halide+Floodlight+Black+70w/d220/sd2768/p27660

Or similar (that's first google hit).

Don't they take a long time to warm up? Or have they improved the
design?

In article ,
Simon C writes:
On Sat, 30 Oct 2010 19:02:03 +0100, wrote:


Metal Halide

http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Slimline+Metal+Halide+Floodlight+Black+70w/d220/sd2768/p27660

Or similar (that's first google hit).

Don't they take a long time to warm up? Or have they improved the
design?

A couple of minutes. OK for timed operation or dust/dawn,
but not PIR switching.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

"Andrew Gabriel" wrote in message
...

Don't they take a long time to warm up? Or have they improved the
design?

A couple of minutes. OK for timed operation or dust/dawn,
but not PIR switching.

From the ones I had I think they don't restart unless they have cooled off
which is a bigger problem for PIR use.
I don't know if that was just the particular lamp design or a general
problem.

On Sat, 30 Oct 2010 21:43:34 +0000 (UTC),
(Andrew Gabriel) wrote:

In article ,
Simon C writes:
On Sat, 30 Oct 2010 19:02:03 +0100, wrote:


Metal Halide

http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Slimline+Metal+Halide+Floodlight+Black+70w/d220/sd2768/p27660

Or similar (that's first google hit).

Don't they take a long time to warm up? Or have they improved the
design?

A couple of minutes. OK for timed operation or dust/dawn,
but not PIR switching.

How do they perform at low temperatures, like outdoors in deep winter?

--
Frank Erskine

In article ,
"dennis@home" writes:


"Andrew Gabriel" wrote in message
...

Don't they take a long time to warm up? Or have they improved the
design?

A couple of minutes. OK for timed operation or dust/dawn,
but not PIR switching.

From the ones I had I think they don't restart unless they have cooled off
which is a bigger problem for PIR use.
I don't know if that was just the particular lamp design or a general
problem.

True of most high pressure discharge lamps. When warmed up (and
hence at some pressure compared with cold), the striking voltage
is higher than provided. Need to cool before they will restrike.
There are special hot restrike versions, but much more expensive,
and need special control gear and connectors to generate and
handle much higher voltage striking pulses. Rarely used anywhere.

The other thing is that, somewhat like fluorescents, many of these
lamps wear significantly during starting. Doesn't matter if they
only switch on once per day, but would be a disaster with frequent
switching.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

In article ,
Frank Erskine writes:
On Sat, 30 Oct 2010 21:43:34 +0000 (UTC),
(Andrew Gabriel) wrote:

In article ,
Simon C writes:
On Sat, 30 Oct 2010 19:02:03 +0100, wrote:


Metal Halide

http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Slimline+Metal+Halide+Floodlight+Black+70w/d220/sd2768/p27660

Or similar (that's first google hit).

Don't they take a long time to warm up? Or have they improved the
design?

A couple of minutes. OK for timed operation or dust/dawn,
but not PIR switching.

How do they perform at low temperatures, like outdoors in deep winter?

No problem at all. If you're running at somewhere around 400-600C,
it doesn't make much difference if the ambient is 15C or -15C.
They mostly use ignitors to generate starting pulses too.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On 29 Oct, 20:53, tony sayer wrote:
I've just had a few security light lamps fall over, the self contained
ones with the 500 watt flood lamp in, and went to the local wholesalers
yesterday to get a dozen replacements.

Was told that they don't stock them anymore and there're being phased
out and we've now got to use a fluorescent replacement one at 5 times
the price!. Just tried one and its surprisingly bright 'tho not as good
as the olde 500 watt tungsten type. However they are using a hellvua lot
less power and I'm quite surprised to see that they light up right away
with no flicker or any other artefacts.

Seeing that this might be a good idea does anyone have much experience
of these and possibly higher brightness ones in the same sort of
fitting/s?. This ones made by Acel and is described as a 21 watt one
'tho I've just noticed that it sez same light output as a 150 watt, but
95% less energy over a 500 watt one which seems a bit ambiguous;!...

cheers..
--
Tony Sayer

Notice B&Coo now only stock 400w & 120 rather than 500 and 150
respectively.

Toolstations unbranded CED lamps significantly better lfe than the 30p
more expensive Sylvania.

Cheers
Adam

Andrew Gabriel wrote:

The other thing is that, somewhat like fluorescents, many of these
lamps wear significantly during starting. Doesn't matter if they
only switch on once per day, but would be a disaster with frequent
switching.


I currently use 5 70W SON-Ts and a few 18W 2D fluorescents around the yard
on a solar cell trigger. I'm thinking of adding a timer to switch them off
between 20:00 and 6:00 when the yard is empty but with a community light
type one shot 1 hour timer as an override. I take it this wouldn't
significantly affect bulb life? I pay about 6quid for a bulb.

Also I'm still after a 110V starter/ballast to run one of these SON bulbs as
a trial for site light if anyone knows of such a beast, the white light is
necessary.

AJH