I've noticed in recent years that all sorts of appliances, desk and
table lamps, outside light fittings, etc. all come with Edison Screw
(E27) lamp holders in them. So I've started to run down my stock of
bayonet cap bulbs and assumed that I'd gradually go over to having E27
bases everywhere, even if that meant replacing old lamp holders that
hang down from the ceiling roses with E27 holders (many of them need
replacing anyway as the bakelite cracks from the heat after some years).

Today I got a couple of CFLs at a good price when reduced to clear, but
they were only available cheap in E27 bases. So I immediately tried to
buy some E27 lamp holders, preferably with a cord grip. But as far as
I can see, they hardly exist. I could not find any in B&Q, or
Wilkinsons, or Tescos, or or the online listings of Homebase, or Wickes,
or Screwfix or Toolstation, or Maplin.

There must be something going on that I don't understand - is there
something wrong with using an Edison screw lamp holder for a lamp that
hangs from the ceiling rose? If not, that means keeping a stock of
spare lamps in both base types. Does everyone do that nowadays?

I haven't even found it easy to buy E27 lamp holders on line: the prices
seem to be at least three times that for bayonet cap holders. Since
much of the rest of the world seems to have standardised on E27 decades
ago, and at least half the bulbs in the shops now have E27 bases, I
don't understand why the corresponding lamp holders are so hard to find.

--
Clive Page

On Wednesday, April 16, 2014 2:10:39 PM UTC+1, Clive Page wrote:
I've noticed in recent years that all sorts of appliances, desk and

table lamps, outside light fittings, etc. all come with Edison Screw

(E27) lamp holders in them. So I've started to run down my stock of

bayonet cap bulbs and assumed that I'd gradually go over to having E27

bases everywhere, even if that meant replacing old lamp holders that

hang down from the ceiling roses with E27 holders (many of them need

replacing anyway as the bakelite cracks from the heat after some years).



Today I got a couple of CFLs at a good price when reduced to clear, but

they were only available cheap in E27 bases. So I immediately tried to

buy some E27 lamp holders, preferably with a cord grip. But as far as

I can see, they hardly exist. I could not find any in B&Q, or

Wilkinsons, or Tescos, or or the online listings of Homebase, or Wickes,

or Screwfix or Toolstation, or Maplin.



There must be something going on that I don't understand - is there

something wrong with using an Edison screw lamp holder for a lamp that

hangs from the ceiling rose? If not, that means keeping a stock of

spare lamps in both base types. Does everyone do that nowadays?



I haven't even found it easy to buy E27 lamp holders on line: the prices

seem to be at least three times that for bayonet cap holders. Since

much of the rest of the world seems to have standardised on E27 decades

ago, and at least half the bulbs in the shops now have E27 bases, I

don't understand why the corresponding lamp holders are so hard to find.



--

Clive Page

What's the problem?

I just put E27 bulb holder into froogle and turned up loads. They all look like the nasty flimsy things they are though.

Philip

Clive Page wrote:

I haven't even found it easy to buy E27 lamp holders on line: the prices
seem to be at least three times that for bayonet cap holders. Since
much of the rest of the world seems to have standardised on E27 decades
ago, and at least half the bulbs in the shops now have E27 bases, I
don't understand why the corresponding lamp holders are so hard to find.

Are you near IKEA?

http://www.ikea.com/gb/en/catalog/products/00067854/

HEMMA Cord set, white £3

On line:

http://www.miniinthebox.com/e27-led-light-bulb-socket-base-holder-with-wire_p422151.html?currency=GBP&litb_from=paid_adwo rds_shopping&pla_adwid=9286587055_138820503_109046 15703_65189101863&gclid=COehl5WS5b0CFZShtAodtFwATA

http://www.amazon.co.uk/VITA-Textile-cord-set-Electrical/dp/B00B04427W/ref=sr_1_2?s=lighting&ie=UTF8&qid=1397655891&sr=1-2&keywords=e27+cord+set

Chris
--
Chris J Dixon Nottingham UK


Plant amazing Acers.

Clive Page wrote:
I've noticed in recent years that all sorts of appliances, desk and
table lamps, outside light fittings, etc. all come with Edison Screw
(E27) lamp holders in them. So I've started to run down my stock of
bayonet cap bulbs and assumed that I'd gradually go over to having E27
bases everywhere, even if that meant replacing old lamp holders that
hang down from the ceiling roses with E27 holders (many of them need
replacing anyway as the bakelite cracks from the heat after some years).

Today I got a couple of CFLs at a good price when reduced to clear, but
they were only available cheap in E27 bases. So I immediately tried to
buy some E27 lamp holders, preferably with a cord grip. But as far as
I can see, they hardly exist. I could not find any in B&Q, or
Wilkinsons, or Tescos, or or the online listings of Homebase, or Wickes,
or Screwfix or Toolstation, or Maplin.

There must be something going on that I don't understand - is there
something wrong with using an Edison screw lamp holder for a lamp that
hangs from the ceiling rose? If not, that means keeping a stock of
spare lamps in both base types. Does everyone do that nowadays?

I haven't even found it easy to buy E27 lamp holders on line: the prices
seem to be at least three times that for bayonet cap holders. Since
much of the rest of the world seems to have standardised on E27 decades
ago, and at least half the bulbs in the shops now have E27 bases, I
don't understand why the corresponding lamp holders are so hard to find.

My strategy is different. I'm assuming that BC will remain predominant
for the foreseeable future so I buy all BC bulbs. For the few ES sockets
I have, I use adapters, which are available cheaply on eBay. Yes the
bulb is lengthened but that's not actually a problem with any of the
fittings I have.

--
Mike Barnes
Cheshire, England

On 16/04/2014 14:47, Chris J Dixon wrote:
Are you near IKEA?

http://www.ikea.com/gb/en/catalog/products/00067854/

HEMMA Cord set, white £3

On line:

http://www.miniinthebox.com/e27-led-light-bulb-socket-base-holder-with-wire_p422151.html?currency=GBP&litb_from=paid_adwo rds_shopping&pla_adwid=9286587055_138820503_109046 15703_65189101863&gclid=COehl5WS5b0CFZShtAodtFwATA

http://www.amazon.co.uk/VITA-Textile-cord-set-Electrical/dp/B00B04427W/ref=sr_1_2?s=lighting&ie=UTF8&qid=1397655891&sr=1-2&keywords=e27+cord+set

Chris,

Thanks - those look possible. It hadn't occurred to me to look for a
cord set, and just throw away the bits I don't need. And, by the way,
the IKEA one *looks* like it might be E27, but they certainly don't want
to give you any information about it, do they?


--
Clive Page

Clive Page wrote:

On 16/04/2014 14:47, Chris J Dixon wrote:
Are you near IKEA?

http://www.ikea.com/gb/en/catalog/products/00067854/

HEMMA Cord set, white £3

Thanks - those look possible. It hadn't occurred to me to look for a
cord set, and just throw away the bits I don't need. And, by the way,
the IKEA one *looks* like it might be E27, but they certainly don't want
to give you any information about it, do they?

Well, they do say

"Light source is sold separately. IKEA recommends LEDARE LED bulb
E27 400 lumen."

Chris
--
Chris J Dixon Nottingham UK


Plant amazing Acers.

Pardon my ignorance, but this switchover has happened since I lost my sight.
Are E27 the ones where the screw is isolated and there is a ring and a blob
on the bottom of the bulbs? I've seen these bulbs, well felt them and
wondered why, but I guess its to isolate the screw part as old es bulbs
used to be letal if a bit of the holder pr broke off.
If not then, I'll not lose sleep, but most of the ones in my house are two
pin BC except one stupid applience with three pin BC type that are now
almost unobtainable.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Mike Barnes" wrote in message
...
Clive Page wrote:
I've noticed in recent years that all sorts of appliances, desk and
table lamps, outside light fittings, etc. all come with Edison Screw
(E27) lamp holders in them. So I've started to run down my stock of
bayonet cap bulbs and assumed that I'd gradually go over to having E27
bases everywhere, even if that meant replacing old lamp holders that
hang down from the ceiling roses with E27 holders (many of them need
replacing anyway as the bakelite cracks from the heat after some years).

Today I got a couple of CFLs at a good price when reduced to clear, but
they were only available cheap in E27 bases. So I immediately tried to
buy some E27 lamp holders, preferably with a cord grip. But as far as
I can see, they hardly exist. I could not find any in B&Q, or
Wilkinsons, or Tescos, or or the online listings of Homebase, or Wickes,
or Screwfix or Toolstation, or Maplin.

There must be something going on that I don't understand - is there
something wrong with using an Edison screw lamp holder for a lamp that
hangs from the ceiling rose? If not, that means keeping a stock of
spare lamps in both base types. Does everyone do that nowadays?

I haven't even found it easy to buy E27 lamp holders on line: the prices
seem to be at least three times that for bayonet cap holders. Since
much of the rest of the world seems to have standardised on E27 decades
ago, and at least half the bulbs in the shops now have E27 bases, I
don't understand why the corresponding lamp holders are so hard to find.

My strategy is different. I'm assuming that BC will remain predominant for
the foreseeable future so I buy all BC bulbs. For the few ES sockets I
have, I use adapters, which are available cheaply on eBay. Yes the bulb is
lengthened but that's not actually a problem with any of the fittings I
have.

--
Mike Barnes
Cheshire, England

On Wed, 16 Apr 2014 14:10:39 +0100, Clive Page
wrote:

I've noticed in recent years that all sorts of appliances, desk and
table lamps, outside light fittings, etc. all come with Edison Screw
(E27) lamp holders in them. So I've started to run down my stock of
bayonet cap bulbs and assumed that I'd gradually go over to having E27
bases everywhere, even if that meant replacing old lamp holders that
hang down from the ceiling roses with E27 holders (many of them need
replacing anyway as the bakelite cracks from the heat after some years).

Today I got a couple of CFLs at a good price when reduced to clear, but
they were only available cheap in E27 bases. So I immediately tried to
buy some E27 lamp holders, preferably with a cord grip. But as far as
I can see, they hardly exist. I could not find any in B&Q, or
Wilkinsons, or Tescos, or or the online listings of Homebase, or Wickes,
or Screwfix or Toolstation, or Maplin.

There must be something going on that I don't understand - is there
something wrong with using an Edison screw lamp holder for a lamp that
hangs from the ceiling rose? If not, that means keeping a stock of
spare lamps in both base types. Does everyone do that nowadays?

I haven't even found it easy to buy E27 lamp holders on line: the prices
seem to be at least three times that for bayonet cap holders. Since
much of the rest of the world seems to have standardised on E27 decades
ago, and at least half the bulbs in the shops now have E27 bases, I
don't understand why the corresponding lamp holders are so hard to find.

This may help get away from the baked bakelite problem
http://www.tlc-direct.co.uk/Products/TLBPHslashES.html

--
rbel

Brian Gaff wrote:
Pardon my ignorance, but this switchover has happened since I lost my sight.

It's not really a switchover. BC still rules in Britain but we've taken
to importing table top lamps and outdoor light fittings from abroad and
taking them as they come rather than getting a UK version made.

I haven't come across any Edison bulbs that you described. The outer
screw is live (well, hopefully neutral) all the way down the thread.

--
Scott

Where are we going and why am I in this handbasket?

En el artículo , rbel
escribió:

This may help get away from the baked bakelite problem
http://www.tlc-direct.co.uk/Products/TLBPHslashES.html

I wonder if that has an earth connection?

--
(\_/)
(='.'=)
(")_(")

On Wed, 16 Apr 2014 17:53:56 +0100, Clive Page wrote:

On 16/04/2014 14:47, Chris J Dixon wrote:
Are you near IKEA?

http://www.ikea.com/gb/en/catalog/products/00067854/

HEMMA Cord set, white £3

On line:

http://www.miniinthebox.com/e27-led-light-bulb-socket-base-holder-with-wire_p422151.html?currency=GBP&litb_from=paid_adwo rds_shopping&pla_adwid=9286587055_138820503_109046 15703_65189101863&gclid=COehl5WS5b0CFZShtAodtFwATA

http://www.amazon.co.uk/VITA-Textile-cord-set-Electrical/dp/B00B04427W/ref=sr_1_2?s=lighting&ie=UTF8&qid=1397655891&sr=1-2&keywords=e27+cord+set

Chris,

Thanks - those look possible. It hadn't occurred to me to look for a
cord set, and just throw away the bits I don't need. And, by the way,
the IKEA one *looks* like it might be E27, but they certainly don't want
to give you any information about it, do they?

Ikea also has a 3-cord and socket one for £7, so a bit cheaper if you need
3.
--
Peter.
The gods will stay away
whilst religions hold sway

On Thu, 17 Apr 2014 05:16:32 +0100, Mike Tomlinson
wrote:

En el artículo , rbel
escribió:

This may help get away from the baked bakelite problem
http://www.tlc-direct.co.uk/Products/TLBPHslashES.html

I wonder if that has an earth connection?

According to TLC they do.
--
rbel

In article ,
"Brian Gaff" writes:
Pardon my ignorance, but this switchover has happened since I lost my sight.
Are E27 the ones where the screw is isolated and there is a ring and a blob
on the bottom of the bulbs? I've seen these bulbs, well felt them and
wondered why, but I guess its to isolate the screw part as old es bulbs
used to be letal if a bit of the holder pr broke off.

They are US double filament lamps. The screw thread is the common
and the tip and ring are the connections to each filamane. They
also have CFL's which work that way.

Never seen them in the UK.

If not then, I'll not lose sleep, but most of the ones in my house are two
pin BC except one stupid applience with three pin BC type that are now
almost unobtainable.

Get the lampholder changed.

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

On 16/04/2014 18:55, Brian Gaff wrote:
Pardon my ignorance, but this switchover has happened since I lost my sight.
Are E27 the ones where the screw is isolated and there is a ring and a blob
on the bottom of the bulbs?

I called them E27 in my original message because I thought it was the
correct modern term, but actually I think it is just a fancy name for
what we used to call simply Edison Screw (ES). According to Wikipedia,
the E stands for Edison, and the 27 is the diameter in millimetres (of
which I doubt Mr Edison would approve). There is apparently also an E26
size in the USA which is said to be "mostly compatible" with E27.


--
Clive Page

https://rover.ebay.com/rover/0/0/0?m... 262181276950
Found these on eBay Edison screw light fittings

wrote in message
...
https://rover.ebay.com/rover/0/0/0?m... 262181276950
Found these on eBay Edison screw light fittings

Plenty on aliexpress

Nobody has actually designed a lamp holder which is safe with no bulb in it
of the ES or bayonet type to my mind, maybe the industry just wants fewer
people to fry their fingers?
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
wrote in message
...
https://rover.ebay.com/rover/0/0/0?m... 262181276950
Found these on eBay Edison screw light fittings

On Sat, 22 Dec 2018 14:18:15 -0800 (PST), wrote:

https://rover.ebay.com/rover/0/0/0?m... 262181276950
Found these on eBay Edison screw light fittings

Because they are a poor design that allows bulbs to work loose and
potentially exposes live metal?

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb in it

MK make the shockguard BC holder that shutters the pins when the bulb is
removed, it's a little bulkier than a normal BC22 lampholder.

On Sun, 23 Dec 2018 10:22:59 +0000, Andy Burns
wrote:

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb in it

MK make the shockguard BC holder that shutters the pins when the bulb is
removed, it's a little bulkier than a normal BC22 lampholder.

Is it made in England or Malaysia?

Scott wrote:

Andy Burns wrote:

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb in it

MK make the shockguard BC holder

Is it made in England or Malaysia?

I'm not fussed.

On Sun, 23 Dec 2018 11:29:01 -0000 (UTC), Jethro_uk
wrote:

On Sun, 23 Dec 2018 09:57:15 +0000, Scott wrote:

On Sat, 22 Dec 2018 14:18:15 -0800 (PST), wrote:

https://rover.ebay.com/rover/0/0/0?
mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F2 62181276950
Found these on eBay Edison screw light fittings

Because they are a poor design that allows bulbs to work loose and
potentially exposes live metal?

I would have though the lack of locking mechanical security could lead to
loose connections, arcing and a fire risk.

That was implied in 'allows bulbs to work loose'.

On Sun, 23 Dec 2018 11:08:06 +0000, Andy Burns
wrote:

Scott wrote:

Andy Burns wrote:

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb in it

MK make the shockguard BC holder

Is it made in England or Malaysia?

I'm not fussed.

Still a question that is not entirely outside the permitted bandwidth
for a newsgroup thread, I would suggest.

In article ,
Scott wrote:
On Sun, 23 Dec 2018 10:22:59 +0000, Andy Burns
wrote:

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb
in it

MK make the shockguard BC holder that shutters the pins when the bulb is
removed, it's a little bulkier than a normal BC22 lampholder.

Is it made in England or Malaysia?

I've just fitted an MK pull light switch which had "Made in China" moulded
into it.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Sun, 23 Dec 2018 09:54:49 +0000, Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb in
it of the ES or bayonet type to my mind, maybe the industry just wants
fewer people to fry their fingers?

I have bayonet lamp holders which are safe. There is an internal shutter
which is only closed when the bulb is rotated into place.

I usually use the MK 1150WHI.

--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On 23/12/2018 11:29, Jethro_uk wrote:
On Sun, 23 Dec 2018 09:57:15 +0000, Scott wrote:

On Sat, 22 Dec 2018 14:18:15 -0800 (PST), wrote:

https://rover.ebay.com/rover/0/0/0?
mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F26 2181276950
Found these on eBay Edison screw light fittings

Because they are a poor design that allows bulbs to work loose and
potentially exposes live metal?

I would have though the lack of locking mechanical security could lead to
loose connections, arcing and a fire risk.


Well all your undergarments 'could' leap simultaneously one foot to the
left; but it's not very likely. So if such risks with E27 etc were
significant I would have thought there'd be clear and unequivocal
evidence by now given the length of time they've been in use and the
installed base across the world.

--
Robin
reply-to address is (intended to be) valid

On Sun, 23 Dec 2018 11:57:57 +0000 (GMT), charles
wrote:

In article ,
Scott wrote:
On Sun, 23 Dec 2018 10:22:59 +0000, Andy Burns
wrote:

Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb
in it

MK make the shockguard BC holder that shutters the pins when the bulb is
removed, it's a little bulkier than a normal BC22 lampholder.

Is it made in England or Malaysia?

I've just fitted an MK pull light switch which had "Made in China" moulded
into it.

Curiouser and curiouser, said Alice.

I understand that wheras with BC polarity did not apply, but with ES you had to observe polarity by connecting Live to the central terminal and neutral to the thread.

Richard

On 23/12/2018 12:10, Tim Streater wrote:
In article , Robin
wrote:

On 23/12/2018 11:29, Jethro_uk wrote:
On Sun, 23 Dec 2018 09:57:15 +0000, Scott wrote:

On Sat, 22 Dec 2018 14:18:15 -0800 (PST), wrote:

https://rover.ebay.com/rover/0/0/0?
mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F26 2181276950
Found these on eBay Edison screw light fittings

Because they are a poor design that allows bulbs to work loose and
potentially exposes live metal?

I would have though the lack of locking mechanical security could
lead to
loose connections, arcing and a fire risk.

Well all your undergarments 'could' leap simultaneously one foot to
the left; but it's not very likely.Â* So if such risks with E27 etc
were significant I would have thought there'd be clear and unequivocal
evidence by now given the length of time they've been in use and the
installed base across the world.

No, they just put up with the increased fire risk. In the US and others
of course, it's much worse again due to their use of cheeseparing 120V.


And the evidence of increased fire risk from Edison screw compared with
bayonet cap is....?

--
Robin
reply-to address is (intended to be) valid

On 23/12/2018 12:18, Jethro_uk wrote:
On Sun, 23 Dec 2018 12:06:30 +0000, Robin wrote:

So if such risks with E27 etc were
significant I would have thought there'd be clear and unequivocal
evidence by now given the length of time they've been in use and the
installed base across the world.

You assume the people that mandate change are working for the public
good. I don't.

I wa not assuming that (or anything). I was looking for data.

One narrative could be the ES design arose because it was the cheapest
possible to deliver (probably using existing tooling). As it was
introduced, any evidence of the risk would have been mixed in with other
factors (given the novelty and rarity of electric lighting).

By the time the risk from lose-arcing bulbs is emerging, there's an
entire industry resting on their production. Any change is going to
involve a lot of (shareholders) money.

And that's how things remained.

Of course now we have low energy bulbs, the risk is reduced - maybe
eliminated. Giving the ES fitting - and the factories that produce for it
- a competitive edge. Which is why we now see them when they were rare as
hens teeth in the UK in the 70s and before.

I'll drop my theory in the face of supporting evidence.


Oh it's a very nice theory. (But then so were phlogiston and
luminiferous aether). I'd just like some evidence to support it.


--
Robin
reply-to address is (intended to be) valid

On 23/12/2018 10:22, Andy Burns wrote:
Brian Gaff wrote:

Nobody has actually designed a lamp holder which is safe with no bulb
in it

MK make the shockguard BC holder that shutters the pins when the bulb is
removed, it's a little bulkier than a normal BC22 lampholder.

Hager-Ashley have had safe BC holders for years. Even the ES type can be
made safer (side contact at the base, plastic threads).

--
Email does not work

On Sun, 23 Dec 2018 05:51:26 -0800 (PST), Tricky Dicky
wrote:

I understand that wheras with BC polarity did not apply, but with ES you had to observe polarity by connecting Live to the central terminal and neutral to the thread.

And how do you do that if a lamp is fitted with a two-pin plug, such
as a europlug?

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

--

Terry

---
This email has been checked for viruses by AVG.
https://www.avg.com

On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

On 23/12/2018 15:37, Scott wrote:
On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

Stick your finger in?

On Sun, 23 Dec 2018 15:44:57 +0000, Richard
wrote:

On 23/12/2018 15:37, Scott wrote:
On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

Stick your finger in?

I suspect it was done that way at one time. I think that's more okay
with 110 volts than it is with European voltage.

"Jethro_uk" wrote in message
news
On Sun, 23 Dec 2018 09:57:15 +0000, Scott wrote:

On Sat, 22 Dec 2018 14:18:15 -0800 (PST), wrote:

https://rover.ebay.com/rover/0/0/0?
mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F26 2181276950
Found these on eBay Edison screw light fittings

Because they are a poor design that allows bulbs to work loose and
potentially exposes live metal?

I would have though the lack of locking mechanical security could lead to
loose connections, arcing and a fire risk.

In practice I've never had anything like that with mine
but have had some BCs where the metal the bulb prongs
go into isnt good enough so the bulb does that. Never
had that with ES because its harder to stuff that up.

"Scott" wrote in message
...
On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

You don't need to with the side contact at the base.

On 2018-12-23 8:56 a.m., Scott wrote:
On Sun, 23 Dec 2018 15:44:57 +0000, Richard
wrote:

On 23/12/2018 15:37, Scott wrote:
On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

Stick your finger in?

I suspect it was done that way at one time. I think that's more okay
with 110 volts than it is with European voltage.

hi scott

On Mon, 24 Dec 2018 04:15:48 +1100, "Tim J" wrote:



"Scott" wrote in message
.. .
On Sun, 23 Dec 2018 15:34:15 -0000, Terry Casey
wrote:

In article ,
says...

Even the ES type can be made safer (side contact at the
base, plastic threads).

They look like unglazed porcelain to me.

Don't they also tend to have switching arangement in the base
these days so that the centre contact is only energised when
the bulb is screwed fully home?

Yes, but how do you know that the centre contact carries the live?

You don't need to with the side contact at the base.

I thought the argument was that it might be possible to touch the
'screw' part of the bulb?