I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems designed
for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is not
designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember the
make/model.

Cheers


Dave R

--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

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

On 23/08/2012 16:32, David WE Roberts wrote:
I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems
designed for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember
the make/model.

Ideally you need the type without the isolating transformer... however
these are not suitable for installation in most moderate sized bathrooms.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Aug 23, 4:42*pm, John Rumm wrote:
On 23/08/2012 16:32, David WE Roberts wrote:

I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems
designed for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember
the make/model.

Ideally you need the type without the isolating transformer... however
these are not suitable for installation in most moderate sized bathrooms.

Run it off a 20w isolation transformer rated for continuous duty


NT

On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate! Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off...

--
John Stumbles

I can't stand intolerance

In article ,
David WE Roberts wrote:
Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging. This cracks the faceplate.

Get one with a metal faceplate. That won't crack - and will help keeping
it cool.

--
*Do infants enjoy infancy as much as adults enjoy adultery?

Dave Plowman London SW
To e-mail, change noise into sound.

"Huge" wrote in message
...
On 2012-08-23, John Stumbles wrote:
On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate! Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off...

I'm with you.

I've just been and looked at the shaver point in our bathroom, which has
had an electric toothbrush plugged into it for ~20 years. It's slightly
warm to the touch and humming faintly. (It used to hum loudly until I
filled the transformer with superglue). It's not an MK, but I don't
think it's a PoS, either.


So what make is it?

--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

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

On Thu, 23 Aug 2012 16:47:59 +0000, John Stumbles wrote:

On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate! Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off...

Or indeed the inferior MK units apparently sold by B&Q...!

--
Use the BIG mirror service in the UK:
http://www.mirrorservice.org

*lightning protection* - a w_tom conductor

"John Stumbles" wrote in message
...
On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate! Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off...


Go read the Screwfix reviews
http://www.screwfix.com/p/mk-dual-vo...0v-white/55378

--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

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

David WE Roberts wrote :
I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems designed
for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is not
designed for continuous use and overheats if you leave an electric toothbrush
charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember the
make/model.

Cheers


Dave R

Get the stainless steel (or whatever metal it is) faceplate version.

On 23/08/2012 16:32, David WE Roberts wrote:


So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember
the make/model.


We have two. They both work ... but...

The Crabtree one (which must be getting on for 30 years old) does the
job fine. The unbranded one switches the transformer with the light,
which means charging for half a day is a bit inefficient.

Andy

On Thu, 23 Aug 2012 16:32:03 +0100, "David WE Roberts"
wrote:

I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems designed
for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is not
designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember the
make/model.

Unless MK have radically changed their design then the screwfix review is a load
of ********. The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA. It's left on near permanent charge in an MK shaver
point. We've gone through a number of electric toothbrushes over the years
dropped, knackered batteries etc but the shaver point is from circa 1991.

--

In message , The Other Mike
writes
On Thu, 23 Aug 2012 16:32:03 +0100, "David WE Roberts"
wrote:

I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems designed
for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is not
designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember the
make/model.

Unless MK have radically changed their design then the screwfix review
is a load
of ********.

It does sound pretty weird. And you get quite a bit of ******** in such
reviews.


The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA. It's left on near permanent charge in an MK shaver
point. We've gone through a number of electric toothbrushes over the years
dropped, knackered batteries etc but the shaver point is from circa 1991.


We had a shaver point in the old bathroom, it never had a problem.

The one here doesn't either
--
Chris French

What is the point of shaver points exactly? Is this some legacy thing?
I notice for example, and don't try this at home... that the pitch of the
pins and their size is ideal for slipping into the live and neutral of a
13a socket. All one needs is a dummy earth pin or screwdriver to release the
shutter.
Yes, its possibly very dangerous, but it does work nonetheless.
Brian

--
--
From the sofa of Brian Gaff -

Blind user, so no pictures please!
"chris French" wrote in message
...
In message , The Other Mike
writes
On Thu, 23 Aug 2012 16:32:03 +0100, "David WE Roberts"

wrote:

I thought that shaver points were fine for charging electgric
toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems
designed
for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is
not
designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember the
make/model.

Unless MK have radically changed their design then the screwfix review is
a load
of ********.

It does sound pretty weird. And you get quite a bit of ******** in such
reviews.


The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA. It's left on near permanent charge in an MK
shaver
point. We've gone through a number of electric toothbrushes over the
years
dropped, knackered batteries etc but the shaver point is from circa 1991.


We had a shaver point in the old bathroom, it never had a problem.

The one here doesn't either
--
Chris French

In message , Brian Gaff
writes
What is the point of shaver points exactly? Is this some legacy thing?
I notice for example, and don't try this at home... that the pitch of the
pins and their size is ideal for slipping into the live and neutral of a
13a socket. All one needs is a dummy earth pin or screwdriver to release the
shutter.
Yes, its possibly very dangerous, but it does work nonetheless.

Not in my recent experience, Brian.

We took over a rented holiday cottage in Suffolk for a few days last
week. Unfortunately the bathroom shaver light did not work despite
trying various combinations with the room light.

Rather than going 3 days without shaving, I tried your 13 amp socket
trick and found the shaver (Philips) pin pitch too narrow to enter.

regards

--
Tim Lamb

Brian Gaff wrote:

the pitch of the
pins and their size is ideal for slipping into the live and neutral of a
13a socket. All one needs is a dummy earth pin

I think you're supposed to refer to them as ISODs (Insulated Shutter
Opening Device).

On Friday, August 24, 2012 9:14:55 AM UTC+1, Andy Burns wrote:
Brian Gaff wrote:



the pitch of the

pins and their size is ideal for slipping into the live and neutral of a

13a socket. All one needs is a dummy earth pin



I think you're supposed to refer to them as ISODs (Insulated Shutter

Opening Device).

iSods the new Apple device

On Aug 23, 11:07*pm, The Other Mike
wrote:
The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA.

Our Braun Oral-B charger is labelled as 1.2 Watts (*not* VA), and of
course as far as the shaver socket is concerned it's current
consumption that matters rather than power. Nevertheless I've never
had a problem with leaving a toothbrush on charge 'continuously'.

The same cannot be said for all appliances. We tried using a Philips
LED nightlight in a bathroom shaver socket; the quoted power
consumption was well below the transformer rating, but it used a
simple 'capacitor dropper' technique and the power factor was
terrible. The transformer rapidly overheated and shut down
(fortunately it was an auto-resetting thermal cutout).

But I would hope that a toothbrush charger, designed for use in a
bathroom, would have a more sensible power factor (quoting the VA
rating on the product would be helpful however).

Richard.
http://www.rtrussell.co.uk/

In article
,
Richard Russell wrote:
Our Braun Oral-B charger is labelled as 1.2 Watts (*not* VA), and of
course as far as the shaver socket is concerned it's current
consumption that matters rather than power.

Eh? Transformers are almost always rated in VA.

--
*Why do we say something is out of whack? What is a whack? *

Dave Plowman London SW
To e-mail, change noise into sound.

On Aug 24, 12:56*pm, "Dave Plowman (News)"
wrote:
Transformers are almost always rated in VA.

So? Given that the voltage is known pretty accurately, VA and current
are effectively interchangeable. The limiting factors as far as
transformers are concerned are primarily heating (I^2R) and
saturation; in both cases it's the current that matters.

My point was that the power consumption (which is what the Braun
toothbrush charger quotes) isn't relevant to determining whether or
not the shaver transformer will be able to cope with the load. I
assume it's quoted to emphasise its 'green' credentials, but the VA
figure would be more useful.

Richard.
http://www.rtrussell.co.uk/

On Fri, 24 Aug 2012 04:29:01 -0700 (PDT), Richard Russell wrote:

On Aug 23, 11:07*pm, The Other Mike
wrote:
The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA.

Our Braun Oral-B charger is labelled as 1.2 Watts (*not* VA), and of
course as far as the shaver socket is concerned it's current
consumption that matters rather than power. Nevertheless I've never
had a problem with leaving a toothbrush on charge 'continuously'.

The same cannot be said for all appliances. We tried using a Philips
LED nightlight in a bathroom shaver socket; the quoted power
consumption was well below the transformer rating, but it used a
simple 'capacitor dropper' technique and the power factor was
terrible. The transformer rapidly overheated and shut down
(fortunately it was an auto-resetting thermal cutout).

But I would hope that a toothbrush charger, designed for use in a
bathroom, would have a more sensible power factor (quoting the VA
rating on the product would be helpful however).

Richard.
http://www.rtrussell.co.uk/

On my Braun's charger, which gets almost imperceptibly warm in a 13A socket
even in Summer, the plug-in meter gave no reading on W or VA (no mantissa).
--
Peter.
The gods will stay away
whilst religions hold sway

On Fri, 24 Aug 2012 04:29:01 -0700 (PDT), Richard Russell
wrote:

On Aug 23, 11:07*pm, The Other Mike
wrote:
The chargers on Braun toothbrushes (ours is the 2000 model) are
rated at one and a bit VA.

Our Braun Oral-B charger is labelled as 1.2 Watts (*not* VA)

I was going from memory. Some time ago I roughly calculated what it would cost
to leave on charge for a complete year. I've forgotten how much that was too


--

The Other Mike wrote:

Richard Russell wrote:

Our Braun Oral-B charger is labelled as 1.2 Watts (*not* VA)

Some time ago I roughly calculated what it would cost
to leave on charge for a complete year. I've forgotten how much that was too

Without even bothering the back of a fag-packet, I'd say about £1.20

On Fri, 24 Aug 2012 08:27:31 +0100, "Brian Gaff"
wrote:

What is the point of shaver points exactly? Is this some legacy thing?
I notice for example, and don't try this at home... that the pitch of the
pins and their size is ideal for slipping into the live and neutral of a
13a socket. All one needs is a dummy earth pin or screwdriver to release the
shutter.
Yes, its possibly very dangerous, but it does work nonetheless.
Brian

--

It's the thinner pinned Euro plugs that do that.
Shaver plugs have thicker pins, the same dimensions as German Schuko
plug pins.

Most of the 13A sockets in this house have the panted MK shutter
system that doesn't involve the earth pin so a Euro plug will go right
in.
Not to be recommended of course.

--
Graham.
%Profound_observation%

On 23/08/2012 23:07, The Other Mike wrote:

Unless MK have radically changed their design then the screwfix review is a load
of ********.

Either that, or it's based on old information. In the current
Clearshave section in the MK catalogue

http://www.mkelectric.com/Documents/...ave%20Plus.pdf

It says "Clearshave products with shaver sockets are now all
suitable for use with electric toothbrushes too."

--
Andy

On 24/08/2012 21:55, I wrote:

It says "Clearshave products with shaver sockets are now all
suitable for use with electric toothbrushes too."

And the K701WHI shaver supply unit, which is a 'logic plus' product,
rather than 'clearshave' is now described as being a "Shaver/Toothbrush
Supply Unit,"

http://www.mkelectric.com/Documents/...gic%20Plus.pdf
(p.6 of the PDF).

--
Andy

On 23/08/2012 17:47, John Stumbles wrote:
On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate! Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off.

I quite agree that a genuine MK item is unlikely to have any problem
with this. However, plugging in a toothbrush does have more of an effect
than you might imagine, as I'm pretty sure that the normal arrangement
is that the transformer is de-energised and is only energised by the
action of plugging something in.

SteveW

On 24/08/2012 08:27, Brian Gaff wrote:
What is the point of shaver points exactly? Is this some legacy thing?
I notice for example, and don't try this at home... that the pitch of the
pins and their size is ideal for slipping into the live and neutral of a
13a socket. All one needs is a dummy earth pin or screwdriver to release the
shutter.

Some sockets (certainly older MK and quite possibly the current ones)
don't need the dummy earth pin, as they don't open the shutter that way.
Instead the shutter is pivoted in the middle and has "ramps" in opposing
directions, so as a plug is inserted, the live and neutral pins rotate
the shutter open.

SteveW

On Aug 23, 4:50*pm, NT wrote:
On Aug 23, 4:42*pm, John Rumm wrote:



On 23/08/2012 16:32, David WE Roberts wrote:

I thought that shaver points were fine for charging electgric toothbrushes.
Well, the Braun toothbrushes come with a two pin plug which seems
designed for shaver points.

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

So does anyone know of a suitable shaver point?
Used to have one in the last house which was fine but I an't remember
the make/model.

Ideally you need the type without the isolating transformer... however
these are not suitable for installation in most moderate sized bathrooms.

Run it off a 20w isolation transformer rated for continuous duty

NT

Another option is to heatsink a transformer and add ventilation. Use
ali not steel for the heatsink, got to be nonmagnetic. Its a simple
way to uprate transformers a bit.


NT

"Andy Wade" wrote in message
...
On 23/08/2012 23:07, The Other Mike wrote:

Unless MK have radically changed their design then the screwfix review is
a load
of ********.

Either that, or it's based on old information. In the current Clearshave
section in the MK catalogue

http://www.mkelectric.com/Documents/...ave%20Plus.pdf

It says "Clearshave products with shaver sockets are now all
suitable for use with electric toothbrushes too."


Which implies that in the past they may not have been. :-)
So the reviews may reflect the performance of past MK sockets.
Ah - followed the link and this is for lights with a shaver socket.
Up thread people have complained that the socket is only live when the light
is on.
These now turn the socket on at plug insertion.
So possibly nothing to do with overheating at all.

Cheers

Dave R
--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

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

In article ,
SteveW wrote:
I quite agree that a genuine MK item is unlikely to have any problem
with this. However, plugging in a toothbrush does have more of an effect
than you might imagine, as I'm pretty sure that the normal arrangement
is that the transformer is de-energised and is only energised by the
action of plugging something in.

Well yes. But how many simply leave the shaver plugged in and switch off
at the shaver? This is how you switch off pretty well every electrical
appliance - not by unplugging it.

--
*42.7% of statistics are made up. Sorry, that should read 47.2% *

Dave Plowman London SW
To e-mail, change noise into sound.

"John Stumbles" wrote in message
...
On Thu, 23 Aug 2012 16:32:03 +0100, David WE Roberts wrote:

Reading the Screwfix reviews on the MK shaver point it seems that it is
not designed for continuous use and overheats if you leave an electric
toothbrush charging.
This cracks the faceplate.

Do MK actually say that themselves? Sounds very unlikely that the
miniscule current drawn by the toothbrush charger would make any
noticeable difference to the power dissipated in the shaver transformer,
and even more improbable that it would dissipate enough power as heat to
crack a faceplate!

Yes.

Not on a reputable genuine MK unit anyway: substitute
some POS counterfeit item and all bets are off...

Nope, still true of those too.

Brian,

It looks like you may have inadvertently changed the sorting order of the newsgroup as you've been resurrecting a lot of old threads!

Mathew


On Wednesday, December 19, 2012 11:52:08 PM UTC, Brian Gaff wrote:

There is something odd going on with shavers. [...]

Hi.just joining in the toothbrush talk and wondered if anyone could offer help. The sink vanity unit I have has 3 down lights and shaver point with kinda block thing beside it. It does say shavers only and power only works when pull cord on to put lights on in unit. I've been charging a brawn family type into it for periods when lights on and been ok but recently I think I smell burnin from toothbrush unit and crackling sound. Haven't used since. Is the blank a fuse place or other voltage point? Can lights b shut off or bypassed so they don't need to be on while charging? It's such a pain!!! Any advise??
Thanks
ShaC

wrote:

Hi.just joining in the toothbrush talk Any advise??
Get an electrician to fit a socket that's rated for constant toothbrush
charging, as well as sporadic shaver use, e.g.

https://www.mkelectric.com/en-gb/Products/WD/logicplus/shaversupplyunits/Pages/K701WHI.aspx

Andy Burns wrote:

Get an electrician to fit a socket that's rated for constant toothbrush
charging, as well as sporadic shaver use, e.g.

https://www.mkelectric.com/en-gb/Products/WD/logicplus/shaversupplyunits/Pages/K701WHI.aspx

Note the graphic on the old vs new model

http://sparkydirect.s3.amazonaws.com/K/K701WHI.jpg

https://i.ebayimg.com/images/g/-AwAAOSwdGFYrroN/s-l300.jpg

On Tuesday, 24 October 2017 08:51:00 UTC+1, Andy Burns wrote:
wrote:

Hi.just joining in the toothbrush talk Any advise??
Get an electrician to fit a socket that's rated for constant toothbrush
charging, as well as sporadic shaver use, e.g.

https://www.mkelectric.com/en-gb/Products/WD/logicplus/shaversupplyunits/Pages/K701WHI.aspx

the other option is plug the toothbrush into an adaptor outside the bathroom


NT

In article ,
writes:
Hi.just joining in the toothbrush talk and wondered if anyone could offer h=
elp. The sink vanity unit I have has 3 down lights and shaver point with ki=
nda block thing beside it. It does say shavers only and power only works wh=
en pull cord on to put lights on in unit. I've been charging a brawn family=
type into it for periods when lights on and been ok but recently I think I=
smell burnin from toothbrush unit and crackling sound. Haven't used since.=
Is the blank a fuse place or other voltage point? Can lights b shut off or=
bypassed so they don't need to be on while charging? It's such a pain!!! A=
ny advise??

The socket is designed for a shaver load.
The toothbrush charger will be next to no load on the isolating
transformer, particularly when charged, and the socket output
is likely to rise to 270V (IIRC, it's allowed to go up to 275V
off-load), which the toothbrush probably wasn't designed for.

Assuming the toothbrush is designed for 120-240V supply, you
should always plug it into the 120V shaver socket (with an
adaptor of necessary) when using an isolating socket shaver
socket.

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

On 25/10/2017 16:44, Andrew Gabriel wrote:

The socket is designed for a shaver load.
The toothbrush charger will be next to no load on the isolating
transformer, particularly when charged, and the socket output
is likely to rise to 270V (IIRC, it's allowed to go up to 275V
off-load), which the toothbrush probably wasn't designed for.

Assuming the toothbrush is designed for 120-240V supply, you
should always plug it into the 120V shaver socket (with an
adaptor of necessary) when using an isolating socket shaver
socket.

What will happen bad if you use the 240V socket, as I have been doing
for the last 20 or more years.

On 25/10/2017 16:44, Andrew Gabriel wrote:

Assuming the toothbrush is designed for 120-240V supply, you
should always plug it into the 120V shaver socket (with an
adaptor of necessary) when using an isolating socket shaver
socket.


No longer a safe assumption given the OP referred to a "brawn family
type". Braun stopped providing dual voltage chargers with their Oral-B
toothbrushes several years ago.

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

In article ,
Nick writes:
On 25/10/2017 16:44, Andrew Gabriel wrote:

The socket is designed for a shaver load.
The toothbrush charger will be next to no load on the isolating
transformer, particularly when charged, and the socket output
is likely to rise to 270V (IIRC, it's allowed to go up to 275V
off-load), which the toothbrush probably wasn't designed for.

Assuming the toothbrush is designed for 120-240V supply, you
should always plug it into the 120V shaver socket (with an
adaptor of necessary) when using an isolating socket shaver
socket.

What will happen bad if you use the 240V socket, as I have been doing
for the last 20 or more years.

You may get shorter life out of it than you would otherwise
have done.

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