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hacking MK dual gang shaver sockets!
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Fergus McMenemie
Jan 9, 2012, 2:14:21 PM1/9/12
to
Folks,
I recently replaced the shaver socket in the bathroom, and boy ... do I
feel cheated. The old unit had two outputs one labeled 110v the other
220v with an external switch to select one or the other. I have both an
electric toothbrush and an electric shaver and I was fed up having to
keep track of which was being charged and for how long. So I replaced it
with a 2 gang MK shaver socket from B&Q which had two outputs and no
switch, one marked 110 and 220. Since both my devices will run on either
110 or 220 I intended to plug in both simultaneously and it would not
matter about the different supply levels.
However it turns out the MK unit was switched, it had an hidden internal
mechanism operated by insetting a plug. Only one of the sockets can be
used at a time. A real pain. This was not marked on the packaging
anywhere. I phoned MK and they gave all kinds of guff as to why things
were the way they were. Interestingly the support guy did admit that
these devices were designed decades ago and were not intended for
continuous use, even if this continuous use only involved having to
support trickle chargers. Some shaver sockets tended to overheat and
would cut out, if say a shaver was left continuously plugged in! This
has apparently been fixed.
However my question is has anybody hacked these units to allow both
sockets to be used simultaneously? I am interested in any thoughts as to
wiring the transformer's output to both sockets, and bypassing or
disabling the switch. Assuming the transformer only has one secondary
winding which is tapped to provide the 110v output. Should I use the 110
or 240 winding?
Thoughts?
I recently replaced the shaver socket in the bathroom, and boy ... do I
feel cheated. The old unit had two outputs one labeled 110v the other
220v with an external switch to select one or the other. I have both an
electric toothbrush and an electric shaver and I was fed up having to
keep track of which was being charged and for how long. So I replaced it
with a 2 gang MK shaver socket from B&Q which had two outputs and no
switch, one marked 110 and 220. Since both my devices will run on either
110 or 220 I intended to plug in both simultaneously and it would not
matter about the different supply levels.
However it turns out the MK unit was switched, it had an hidden internal
mechanism operated by insetting a plug. Only one of the sockets can be
used at a time. A real pain. This was not marked on the packaging
anywhere. I phoned MK and they gave all kinds of guff as to why things
were the way they were. Interestingly the support guy did admit that
these devices were designed decades ago and were not intended for
continuous use, even if this continuous use only involved having to
support trickle chargers. Some shaver sockets tended to overheat and
would cut out, if say a shaver was left continuously plugged in! This
has apparently been fixed.
However my question is has anybody hacked these units to allow both
sockets to be used simultaneously? I am interested in any thoughts as to
wiring the transformer's output to both sockets, and bypassing or
disabling the switch. Assuming the transformer only has one secondary
winding which is tapped to provide the 110v output. Should I use the 110
or 240 winding?
Thoughts?
harry
Jan 9, 2012, 2:24:22 PM1/9/12
to
On Jan 9, 7:14 pm, fer...@twig-me-uk.not.here (Fergus McMenemie)
wrote:
There is a single 1:1 transformer inside. The secondary is centre
tapped to give the 110 volts. So if you used both sockets
simultaneously you would overload the common part of the transformer
wire.
So the switch is fixed so you can't.
wrote:
tapped to give the 110 volts. So if you used both sockets
simultaneously you would overload the common part of the transformer
wire.
So the switch is fixed so you can't.
Scott M
Jan 9, 2012, 2:32:37 PM1/9/12
to
Fergus McMenemie wrote:
> Thoughts?
Not that I think two simultaneous charging devices will overload the
thing, but how about removing the switch and making both sockets 110v by
using the centre tap as a common to both sockets and each end of the
xformer as the supply rails?
--
Scott
Where are we going and why am I in this handbasket?
> Thoughts?
Not that I think two simultaneous charging devices will overload the
thing, but how about removing the switch and making both sockets 110v by
using the centre tap as a common to both sockets and each end of the
xformer as the supply rails?
--
Scott
Where are we going and why am I in this handbasket?
Graham.
Jan 9, 2012, 2:40:23 PM1/9/12
to
simultaneously and I would have assumed there would be a regularity
requirement that they can't.
Cue someone who knows.
If they did work the way you wanted then it could be a (roughly)
centre tapped secondary winding to give 110 and 240 or it could be two
separate windings which with an in phase link in place would gibe you
a 350volt supply in your bathroom. I know it's unlikely to happen by
accident, but still.
The same could happen with multiple isolated outlets near to each
other, I wonder if there is a prohibition about this?
--
Graham.
%Profound_observation%
Fergus McMenemie
Jan 9, 2012, 2:56:36 PM1/9/12
to
Scott M <no_one@no_where.net> wrote:
> ergus McMenemie wrote:
>
> > Thoughts?
>
> Not that I think two simultaneous charging devices will overload the
> thing, but how about removing the switch and making both sockets 110v by
> using the centre tap as a common to both sockets and each end of the
> xformer as the supply rails?
>
> --
> Scott
Duh... thanks!
> ergus McMenemie wrote:
>
> > Thoughts?
>
> Not that I think two simultaneous charging devices will overload the
> thing, but how about removing the switch and making both sockets 110v by
> using the centre tap as a common to both sockets and each end of the
> xformer as the supply rails?
>
> --
> Scott
Graham.
Jan 9, 2012, 3:03:21 PM1/9/12
to
is in your mouth and you are holding the tap?
Probably nothing, I know but safety is about unlikely sets of
occurrences.
--
Graham.
%Profound_observation%
Graham.
Jan 9, 2012, 3:07:26 PM1/9/12
to
two wired appliances.
--
Graham.
%Profound_observation%
Andrew Gabriel
Jan 9, 2012, 3:56:29 PM1/9/12
to
In article <9phmg7pb6n75tvesl...@4ax.com>,
device.
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]
Graham. <m...@privacy.net> writes:
> On Mon, 9 Jan 2012 19:56:36 +0000, fer...@twig-me-uk.not.here (Fergus
> McMenemie) wrote:
>
>>Scott M <no_one@no_where.net> wrote:
>>
>>> ergus McMenemie wrote:
>>>
>>> > Thoughts?
>>>
>>> Not that I think two simultaneous charging devices will overload the
>>> thing, but how about removing the switch and making both sockets 110v by
>>> using the centre tap as a common to both sockets and each end of the
>>> xformer as the supply rails?
>>>
>>> --
>>> Scott
>>
>>
>>Duh... thanks!
>
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
That is why they are designed to allow connection of only one
> On Mon, 9 Jan 2012 19:56:36 +0000, fer...@twig-me-uk.not.here (Fergus
> McMenemie) wrote:
>
>>Scott M <no_one@no_where.net> wrote:
>>
>>> ergus McMenemie wrote:
>>>
>>> > Thoughts?
>>>
>>> Not that I think two simultaneous charging devices will overload the
>>> thing, but how about removing the switch and making both sockets 110v by
>>> using the centre tap as a common to both sockets and each end of the
>>> xformer as the supply rails?
>>>
>>> --
>>> Scott
>>
>>
>>Duh... thanks!
>
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
device.
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
--
[email address is not usable -- followup in the newsgroup]
Andrew Gabriel
Jan 9, 2012, 4:04:13 PM1/9/12
to
In article <1kdmam3.1t8k0lxdi662oN%fer...@twig-me-uk.not.here>,
up to 270V (due to poor transformer regulation). Chargers often look
pretty much like no load, and can end up getting 270V. If the charger
has a wide ranging 110-240V supply, it's often better to use the 120V
side.
Socket has to cutout at loads over 25W, but this doesn't need to
be quick, and often relies on the transformer overheating and a
thermal trip.
fer...@twig-me-uk.not.here (Fergus McMenemie) writes:
> Folks,
>
> I recently replaced the shaver socket in the bathroom, and boy ... do I
> feel cheated. The old unit had two outputs one labeled 110v the other
> 220v with an external switch to select one or the other. I have both an
> electric toothbrush and an electric shaver and I was fed up having to
> keep track of which was being charged and for how long. So I replaced it
> with a 2 gang MK shaver socket from B&Q which had two outputs and no
> switch, one marked 110 and 220. Since both my devices will run on either
> 110 or 220 I intended to plug in both simultaneously and it would not
> matter about the different supply levels.
>
> However it turns out the MK unit was switched, it had an hidden internal
> mechanism operated by insetting a plug. Only one of the sockets can be
> used at a time. A real pain. This was not marked on the packaging
> anywhere. I phoned MK and they gave all kinds of guff as to why things
> were the way they were. Interestingly the support guy did admit that
> these devices were designed decades ago and were not intended for
> continuous use, even if this continuous use only involved having to
> support trickle chargers. Some shaver sockets tended to overheat and
> would cut out, if say a shaver was left continuously plugged in! This
> has apparently been fixed.
The other problem is that, off-load, the 240V side is allowed to be
> Folks,
>
> I recently replaced the shaver socket in the bathroom, and boy ... do I
> feel cheated. The old unit had two outputs one labeled 110v the other
> 220v with an external switch to select one or the other. I have both an
> electric toothbrush and an electric shaver and I was fed up having to
> keep track of which was being charged and for how long. So I replaced it
> with a 2 gang MK shaver socket from B&Q which had two outputs and no
> switch, one marked 110 and 220. Since both my devices will run on either
> 110 or 220 I intended to plug in both simultaneously and it would not
> matter about the different supply levels.
>
> However it turns out the MK unit was switched, it had an hidden internal
> mechanism operated by insetting a plug. Only one of the sockets can be
> used at a time. A real pain. This was not marked on the packaging
> anywhere. I phoned MK and they gave all kinds of guff as to why things
> were the way they were. Interestingly the support guy did admit that
> these devices were designed decades ago and were not intended for
> continuous use, even if this continuous use only involved having to
> support trickle chargers. Some shaver sockets tended to overheat and
> would cut out, if say a shaver was left continuously plugged in! This
> has apparently been fixed.
up to 270V (due to poor transformer regulation). Chargers often look
pretty much like no load, and can end up getting 270V. If the charger
has a wide ranging 110-240V supply, it's often better to use the 120V
side.
Socket has to cutout at loads over 25W, but this doesn't need to
be quick, and often relies on the transformer overheating and a
thermal trip.
therustyone
Jan 9, 2012, 6:02:42 PM1/9/12
to
On Jan 9, 7:14 pm, fer...@twig-me-uk.not.here (Fergus McMenemie)
wrote:
wrote:
batteries and reduces their life a lot. Better let them discharge
fully before charging and they should go for a decade.
No doubt others will disagree.
rusty
Dave Plowman (News)
Jan 9, 2012, 6:15:27 PM1/9/12
to
Running two devices off an isolating transformer negates the point of
having one.
--
*If you try to fail, and succeed, which have you done?
Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.
having one.
--
*If you try to fail, and succeed, which have you done?
Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.
harry
Jan 10, 2012, 3:18:13 AM1/10/12
to
>
> - Show quoted text -
That is the point of the transformer. The secondary side is not
earthed so you can't get a shock.
Fergus McMenemie
Jan 10, 2012, 3:25:19 AM1/10/12
to
Graham. <m...@privacy.net> wrote:
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
Well I would need to fit another shaver socket or move the existing
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
one... however point taken. But both my shaver and toothbrush are
cordless. But is your scenario any different from using the shavers
single output and droping the charger into a sink full of water while
holding the tap?
Given the above scenario above I do wonder if my houses built in current
leakage protection is better than the decades old isolation transformer
technology that is built into shaver sockets.
Fergus McMenemie
Jan 10, 2012, 3:41:37 AM1/10/12
to
Dave Plowman (News) <da...@davenoise.co.uk> wrote:
> Running two devices off an isolating transformer negates the point of
> having one.
Why? Is this based on a worst case of it being able to touch any single
> Running two devices off an isolating transformer negates the point of
> having one.
wire safely? Touching two wires would still give a sock, isolating
transformer or not?
PeterC
Jan 10, 2012, 3:57:14 AM1/10/12
to
On Mon, 9 Jan 2012 15:02:42 -0800 (PST), therustyone wrote:
> A bit OT, but I find trickle charging cordless devices heats the
> batteries and reduces their life a lot. Better let them discharge
> fully before charging and they should go for a decade.
> No doubt others will disagree.
>
> rusty
Probably not a toothbrush - mine doesn't get even luke warm even if it's on
> A bit OT, but I find trickle charging cordless devices heats the
> batteries and reduces their life a lot. Better let them discharge
> fully before charging and they should go for a decade.
> No doubt others will disagree.
>
> rusty
charge for 6 hours past full. I do tend to wait until the light starts
flashing before recharging as it's not inconvenient and avoids the
requirement for a full discharge every X months.
--
Peter.
The gods will stay away
whilst religions hold sway
Roger Mills
Jan 10, 2012, 5:49:19 AM1/10/12
to
support both devices simultaneously, why not just use a two-way adapter?
That's how I power my toothbrush and radio off a single socket.
Actually, mine is a 3-way adapter which I think I bought in Indonesia -
but I assume they are available here.
Something like
http://www1.conrad-uk.com/scripts/wgate/zcop_uk/~flN0YXRlPTI2MzMxMTc0Mzg=?~template=PCAT_AREA_S_BROWSE&glb_user_js=Y&shop=UK&zhmmh_lfo=&zhmmh_area_kz=&product_show_id=619884&gvlon=&p_init_ipc=X&p_page_to_display=fromoutside&~cookies=1&gclid=&cookie_n[1]=uk_insert&cookie_v[1]=89&cookie_d[1]=&cookie_p[1]=%2f&cookie_e[1]=Sat%2c+11-Feb-2012+10%3a43%3a27+GMT&scrwidth=1280
perhaps - but I'm not sure of the significance of "earthing socket" in
the description. Mine isn't!
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.
Graham.
Jan 10, 2012, 4:43:13 PM1/10/12
to
>>
>> What happens if you drop the shaver in the bath while the toothbrush
>> is in your mouth and you are holding the tap?
>> Probably nothing, I know but safety is about unlikely sets of
>> occurrences.
>>
>> --
>> Graham.
>> %Profound_observation%- Hide quoted text -
>>
>> - Show quoted text -
>
>That is the point of the transformer. The secondary side is not
>earthed so you can't get a shock.
as to create a low resistance path from one side of the tranny to
deck.
Now what?
--
Graham.
%Profound_observation%
Graham.
Jan 10, 2012, 5:13:24 PM1/10/12
to
On Mon, 09 Jan 2012 23:15:27 +0000 (GMT), "Dave Plowman (News)"
<da...@davenoise.co.uk> wrote:
>Running two devices off an isolating transformer negates the point of
>having one.
Increases the likelihood of a hazardous situation arising.
<da...@davenoise.co.uk> wrote:
>Running two devices off an isolating transformer negates the point of
>having one.
But it does negate the point of having a transformer in one important
sense, in my shaver in the bath scenario the transformer prevents
the upstream RCD from tripping even though the victim is getting a
shock to earth.
--
Graham.
%Profound_observation%
Graham.
Jan 10, 2012, 5:26:45 PM1/10/12
to
>
>These shaver sockets are current limited anyway but, assuming it can
>support both devices simultaneously, why not just use a two-way adapter?
>
>That's how I power my toothbrush and radio off a single socket.
>Actually, mine is a 3-way adapter which I think I bought in Indonesia -
>but I assume they are available here.
>
>Something like
>http://www1.conrad-uk.com/scripts/wgate/zcop_uk/~flN0YXRlPTI2MzMxMTc0Mzg=?~template=PCAT_AREA_S_BROWSE&glb_user_js=Y&shop=UK&zhmmh_lfo=&zhmmh_area_kz=&product_show_id=619884&gvlon=&p_init_ipc=X&p_page_to_display=fromoutside&~cookies=1&gclid=&cookie_n[1]=uk_insert&cookie_v[1]=89&cookie_d[1]=&cookie_p[1]=%2f&cookie_e[1]=Sat%2c+11-Feb-2012+10%3a43%3a27+GMT&scrwidth=1280
>perhaps - but I'm not sure of the significance of "earthing socket" in
>the description. Mine isn't!
you that using two appliances must increase the risk, however slight,
of getting the secondary of that transformer across your heart.
--
Graham.
%Profound_observation%
Fergus McMenemie
Jan 10, 2012, 5:51:55 PM1/10/12
to
Graham. <m...@privacy.net> wrote:
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
And another thing.... would I not need three hands! Very dangerous.
> What happens if you drop the shaver in the bath while the toothbrush
> is in your mouth and you are holding the tap?
> Probably nothing, I know but safety is about unlikely sets of
> occurrences.
Dave Plowman (News)
Jan 10, 2012, 6:14:32 PM1/10/12
to
In article <1kdnb9q.7hjmow1nmzpg2N%fer...@twig-me-uk.not.here>,
It does assume you have two faulty devices, etc. However, the isolation
transformer is only needed if a device is faulty.
--
*One tequila, two tequila, three tequila, floor.
transformer is only needed if a device is faulty.
--
*One tequila, two tequila, three tequila, floor.
hugh
Jan 10, 2012, 5:17:24 PM1/10/12
to
In message
<4ce11c7c-dbde-4c43...@k5g2000vba.googlegroups.com>,
harry <harol...@aol.com> writes
What happens if you simultaneously stick a finger in each outlet pin on
the 240 volt side?
--
hugh
<4ce11c7c-dbde-4c43...@k5g2000vba.googlegroups.com>,
harry <harol...@aol.com> writes
the 240 volt side?
--
hugh
hugh
Jan 10, 2012, 5:18:55 PM1/10/12
to
In message <ouqqdfobhjwt$.1pxqxout...@40tude.net>, PeterC
<giraffe...@homecall.co.uk> writes
--
hugh
<giraffe...@homecall.co.uk> writes
>On Mon, 9 Jan 2012 15:02:42 -0800 (PST), therustyone wrote:
>
>> A bit OT, but I find trickle charging cordless devices heats the
>> batteries and reduces their life a lot. Better let them discharge
>> fully before charging and they should go for a decade.
>> No doubt others will disagree.
>>
>> rusty
>
>Probably not a toothbrush - mine doesn't get even luke warm even if it's on
>charge for 6 hours past full. I do tend to wait until the light starts
>flashing before recharging as it's not inconvenient and avoids the
>requirement for a full discharge every X months.
Tooth brush is inductive charging, very low power.
>
>> A bit OT, but I find trickle charging cordless devices heats the
>> batteries and reduces their life a lot. Better let them discharge
>> fully before charging and they should go for a decade.
>> No doubt others will disagree.
>>
>> rusty
>
>Probably not a toothbrush - mine doesn't get even luke warm even if it's on
>charge for 6 hours past full. I do tend to wait until the light starts
>flashing before recharging as it's not inconvenient and avoids the
>requirement for a full discharge every X months.
--
hugh
hugh
Jan 11, 2012, 7:19:16 AM1/11/12
to
In message <6tbpg7lrsglp390am...@4ax.com>, Graham.
<m...@privacy.net> writes
The other side is 240v away. Get in the bath and stick your finger in
that side and if you are still alive come back and tell us about your
experience.
--
hugh
<m...@privacy.net> writes
that side and if you are still alive come back and tell us about your
experience.
--
hugh
hugh
Jan 11, 2012, 7:22:14 AM1/11/12
to
In message <9hcpg7l7r72stlsjj...@4ax.com>, Graham.
<m...@privacy.net> writes
Not if you're referring to your latest post they're not. To get a shock
the person has to be across both output pins of the transformer. Either
pin can be dragged to earth without a shock. That's why it's called an
isolating transformer.
--
hugh
<m...@privacy.net> writes
the person has to be across both output pins of the transformer. Either
pin can be dragged to earth without a shock. That's why it's called an
isolating transformer.
--
hugh
dennis@home
Jan 11, 2012, 7:43:20 AM1/11/12
to
"hugh" <hugh@[127.0.0.1]> wrote in message
news:vYY3qwAE...@raefell.demon.co.uk...
> The other side is 240v away. Get in the bath and stick your finger in that
> side and if you are still alive come back and tell us about your
> experience.
I did drop a live light socket on a lead into a fish tank and put my hand in
when I tried to catch it.
At best it was a tingle and all the fish just swam about as normal.
I don't think I will do it again but I was only about 10 at the time.
Of course statistically its insignificant and YMMV.
Andy Burns
Jan 11, 2012, 7:49:03 AM1/11/12
to
dennis@home wrote:
> I did drop a live light socket on a lead into a fish tank and put my
> hand in
Darwin was at least trying ...
> I did drop a live light socket on a lead into a fish tank and put my
> hand in
Martin Bonner
Jan 11, 2012, 9:44:32 AM1/11/12
to
salt water fish. Fresh water is not a particularly good conductor of
electricity.
dennis@home
Jan 11, 2012, 9:59:19 AM1/11/12
to
"Martin Bonner" <martin...@yahoo.co.uk> wrote in message
news:4663ca10-a042-453c...@t30g2000vbx.googlegroups.com...
Fred
Jan 15, 2012, 11:47:59 AM1/15/12
to
On Tue, 10 Jan 2012 22:13:24 +0000, Graham. <m...@privacy.net> wrote:
>Increases the likelihood of a hazardous situation arising.
>
>But it does negate the point of having a transformer in one important
>sense, in my shaver in the bath scenario the transformer prevents
>the upstream RCD from tripping even though the victim is getting a
>shock to earth.
I've been reading this thread and I'm left wondering two things:
>Increases the likelihood of a hazardous situation arising.
>
>But it does negate the point of having a transformer in one important
>sense, in my shaver in the bath scenario the transformer prevents
>the upstream RCD from tripping even though the victim is getting a
>shock to earth.
These isolating transformers seem to have been around for decades,
whereas RCDs seem to be a more recent invention. Reading Graham's
comments (above) is there an argument that bathrooms would be safer if
the socket had no transformer and was wired direct to a 30mS RCD?
The other thing I wondered was if the OP decided to fir two isolating
sockets, one for each device, or if you had a big bathroom with his
and hers sinks and each had its own socket, would two sockets be just
as dangerous as running two appliances from one socket?
I'm not an electrician, so I don't know but as the output from the two
transformers would be in phase, if you held pole 1 on socket 1 and
pole 2 on socket 2, would that have the same unpleasant effects as
holding poles 1 and 2 on the same socket or am I barking up the wrong
tree (if so, I did say IANAE)
TIA
Dave Plowman (News)
Jan 15, 2012, 1:50:52 PM1/15/12
to
In article <5g06h7d3ojkd2pfbo...@4ax.com>,
wire from each of them.
--
*I don't suffer from insanity, I enjoy every minute of it *
Fred <fr...@no-email.here.invalid> wrote:
> The other thing I wondered was if the OP decided to fir two isolating
> sockets, one for each device, or if you had a big bathroom with his
> and hers sinks and each had its own socket, would two sockets be just
> as dangerous as running two appliances from one socket?
Two isolating transformers are the way to do it. You can safety touch one
> The other thing I wondered was if the OP decided to fir two isolating
> sockets, one for each device, or if you had a big bathroom with his
> and hers sinks and each had its own socket, would two sockets be just
> as dangerous as running two appliances from one socket?
wire from each of them.
--
*I don't suffer from insanity, I enjoy every minute of it *
Fred
Jan 18, 2012, 5:52:30 AM1/18/12
to
On Sun, 15 Jan 2012 18:50:52 +0000 (GMT), "Dave Plowman (News)"
<da...@davenoise.co.uk> wrote:
>Two isolating transformers are the way to do it. You can safety touch one
>wire from each of them.
Thanks. I never knew that.
<da...@davenoise.co.uk> wrote:
>Two isolating transformers are the way to do it. You can safety touch one
>wire from each of them.
Andrew Gabriel
Jan 20, 2012, 5:45:10 AM1/20/12
to
In article <5g06h7d3ojkd2pfbo...@4ax.com>,
burn-out scenario.
When RCD's fail it's usually unsafe, and silently.
(Fortunately, RCD's in the EU don't fail at anything like the
rate they do in the US.)
> The other thing I wondered was if the OP decided to fir two isolating
> sockets, one for each device, or if you had a big bathroom with his
> and hers sinks and each had its own socket, would two sockets be just
> as dangerous as running two appliances from one socket?
No, separate isolating transformer per appliance is the correct
way to do it.
> I'm not an electrician, so I don't know but as the output from the two
> transformers would be in phase, if you held pole 1 on socket 1 and
> pole 2 on socket 2, would that have the same unpleasant effects as
> holding poles 1 and 2 on the same socket or am I barking up the wrong
> tree (if so, I did say IANAE)
It would be safe.
Fred <fr...@no-email.here.invalid> writes:
> I've been reading this thread and I'm left wondering two things:
>
> These isolating transformers seem to have been around for decades,
> whereas RCDs seem to be a more recent invention. Reading Graham's
> comments (above) is there an argument that bathrooms would be safer if
> the socket had no transformer and was wired direct to a 30mS RCD?
Isolating transformers are designed to fail safe even in a
> I've been reading this thread and I'm left wondering two things:
>
> These isolating transformers seem to have been around for decades,
> whereas RCDs seem to be a more recent invention. Reading Graham's
> comments (above) is there an argument that bathrooms would be safer if
> the socket had no transformer and was wired direct to a 30mS RCD?
burn-out scenario.
When RCD's fail it's usually unsafe, and silently.
(Fortunately, RCD's in the EU don't fail at anything like the
rate they do in the US.)
> The other thing I wondered was if the OP decided to fir two isolating
> sockets, one for each device, or if you had a big bathroom with his
> and hers sinks and each had its own socket, would two sockets be just
> as dangerous as running two appliances from one socket?
way to do it.
> I'm not an electrician, so I don't know but as the output from the two
> transformers would be in phase, if you held pole 1 on socket 1 and
> pole 2 on socket 2, would that have the same unpleasant effects as
> holding poles 1 and 2 on the same socket or am I barking up the wrong
> tree (if so, I did say IANAE)
kk.c...@gmail.com
Jan 16, 2019, 4:28:42 AM1/16/19
to
DerbyBorn
Jan 16, 2019, 5:44:50 AM1/16/19
to
. Some shaver sockets
>> tended to overheat and would cut out, if say a shaver was left
>> continuously plugged in! This has apparently been fixed.
>>
>>
>
Slightly worrying - my 1988 house has a MK Socket and there is always a
>> tended to overheat and would cut out, if say a shaver was left
>> continuously plugged in! This has apparently been fixed.
>>
>>
>
toothbrush plugged in,
Scott
Jan 16, 2019, 5:51:22 AM1/16/19
to
On Wed, 16 Jan 2019 10:44:47 GMT, DerbyBorn <Some...@Nearhome.com>
wrote:
Per my other thread, I fitted a double Schuko socket (not inside the
bathroom) which solves such problems.
wrote:
bathroom) which solves such problems.
Dave Plowman (News)
Jan 16, 2019, 6:04:58 AM1/16/19
to
In article <XnsA9D96D522F92FTr...@81.171.92.236>,
It would be a very poor transformer indeed which came to harm due to being
powered up at all times with no load - think a bell transformer.
These shaver outlets often hum. Having it switched when not in use stops
this.
--
*The last thing I want to do is hurt you. But it's still on my list.
powered up at all times with no load - think a bell transformer.
These shaver outlets often hum. Having it switched when not in use stops
this.
--
*The last thing I want to do is hurt you. But it's still on my list.
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