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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#41
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Double/Triple outlet shaver sockets
"Adam Funk" wrote in message
... On 2014-03-04, Dave Plowman (News) wrote: In article , wrote: It might be easier to plug tghe toothbrushes into a simple adaptor outside the bathroom. I have a charging 'station' in the tank cupboard in my bathroom. Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. -- Adam |
#42
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Double/Triple outlet shaver sockets
On 09/03/2014 08:57, ARW wrote:
Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. Great! If you take extension leads into account, you shouldn't have a socket *anywhere*! -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
#43
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Double/Triple outlet shaver sockets
"Roger Mills" wrote in message
... On 09/03/2014 08:57, ARW wrote: Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. Great! If you take extension leads into account, you shouldn't have a socket *anywhere*! There is more to it than just extension leads. Take a rented house where the landlord does not give a toss and the tenants are living below the poverty line. Will the tenants try to use an electric heater (or indeed a hair dryer) to warm the bathroom when the boiler is broken and it is minus 12 outside. I have spent a lot of time working in slum housing and these are often the most dangerous houses where electics are concerned. -- Adam |
#44
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Double/Triple outlet shaver sockets
In article ,
ARW wrote: Great! If you take extension leads into account, you shouldn't have a socket *anywhere*! There is more to it than just extension leads. Take a rented house where the landlord does not give a toss and the tenants are living below the poverty line. Will the tenants try to use an electric heater (or indeed a hair dryer) to warm the bathroom when the boiler is broken and it is minus 12 outside. Well yes - but how does the proximity of a socket influence this, as they'd simply use an extension if needed. Adding to the risks. ;-) -- *Time is fun when you're having flies... Kermit Dave Plowman London SW To e-mail, change noise into sound. |
#45
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Double/Triple outlet shaver sockets
On 2014-03-09, ARW wrote:
"Adam Funk" wrote in message ... Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? |
#46
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Double/Triple outlet shaver sockets
"Adam Funk" wrote in message
... On 2014-03-09, ARW wrote: "Adam Funk" wrote in message ... Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) -- Adam |
#47
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Double/Triple outlet shaver sockets
On Tuesday, March 11, 2014 6:16:45 PM UTC, wrote:
"Adam Funk" ducksburg.com wrote in message ... On 2014-03-09, ARW wrote: "Adam Funk" ducksburg.com wrote in message ... Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) So theyre ok with people vacuuming while in the bath? NT |
#48
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Double/Triple outlet shaver sockets
wrote in message
... On Tuesday, March 11, 2014 6:16:45 PM UTC, wrote: "Adam Funk" ducksburg.com wrote in message ... On 2014-03-09, ARW wrote: "Adam Funk" ducksburg.com wrote in message ... Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) So theyre ok with people vacuuming while in the bath? Reminds me of the when the gf's lad wanted to help me clean up after fitting an extractor fan(he was about 6 years old at the time). I had a Henry and I left him in the bathroom vacuuming up brick dust whilst went for a cig. When I went back inside the water in the toilet bowl was missing and the Henry was making a funny noise. -- Adam |
#49
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Double/Triple outlet shaver sockets
On 2014-03-09, ARW wrote:
There is more to it than just extension leads. Take a rented house where the landlord does not give a toss and the tenants are living below the poverty line. Will the tenants try to use an electric heater (or indeed a hair dryer) to warm the bathroom when the boiler is broken and it is minus 12 outside. I have spent a lot of time working in slum housing and these are often the most dangerous houses where electics are concerned. You mean most dangerous *before* you worked on them, right? ;-) |
#51
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Double/Triple outlet shaver sockets
On 09/03/2014 08:57, ARW wrote:
"Adam Funk" wrote in message ... On 2014-03-04, Dave Plowman (News) wrote: In article , wrote: It might be easier to plug tghe toothbrushes into a simple adaptor outside the bathroom. I have a charging 'station' in the tank cupboard in my bathroom. Is it still the case (as an electrician told me some years ago) that you can get around the rules on sockets in bathrooms by putting a normal socket in the airing cupboard? Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. As our landing is at no point more than 3'6" from our bathroom door that'd mean no socket there for plugging in the vac for doing the stairs. SteveW |
#52
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Double/Triple outlet shaver sockets
On 11/03/2014 20:25, SteveW wrote:
As our landing is at no point more than 3'6" from our bathroom door that'd mean no socket there for plugging in the vac for doing the stairs. SteveW For safety, the vacuum cleaner [1] should be at the bottom of the stairs, and you have a long hose to do the steps. Pulling a cleaner down the stairs can be very damaging to walls and persons. And vacuum cleaners. [1] Assuming not a tiny handheld device. -- Rod |
#53
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Double/Triple outlet shaver sockets
On Tuesday, March 11, 2014 7:15:51 PM UTC, wrote:
wrote in message ... The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) So theyre ok with people vacuuming while in the bath? Reminds me of the when the gf's lad wanted to help me clean up after fitting an extractor fan(he was about 6 years old at the time). I had a Henry and I left him in the bathroom vacuuming up brick dust whilst went for a cig. When I went back inside the water in the toilet bowl was missing and the Henry was making a funny noise. Eek. I had one lad in his 20s that decided to wash an electrical appliance in the sink :/ I cant help thinking schools have lost the plot these days. NT |
#54
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Double/Triple outlet shaver sockets
In article ,
wrote: On Tuesday, March 11, 2014 7:15:51 PM UTC, wrote: wrote in message ... The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) So theyre ok with people vacuuming while in the bath? Reminds me of the when the gf's lad wanted to help me clean up after fitting an extractor fan(he was about 6 years old at the time). I had a Henry and I left him in the bathroom vacuuming up brick dust whilst went for a cig. When I went back inside the water in the toilet bowl was missing and the Henry was making a funny noise. Eek. I had one lad in his 20s that decided to wash an electrical appliance in the sink :/ I cant help thinking schools have lost the plot these days. At BBC tv Centre, in the 1960s, all Tektronics 'scopes that went in for maintainence got washed. the secret was in the drying - as many imitators found to their cost. -- From KT24 Using a RISC OS computer running v5.18 |
#55
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Double/Triple outlet shaver sockets
On 2014-03-09, ARW wrote:
"Roger Mills" wrote in message ... On 09/03/2014 08:57, ARW wrote: Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. Great! If you take extension leads into account, you shouldn't have a socket *anywhere*! There is more to it than just extension leads. Take a rented house where the landlord does not give a toss and the tenants are living below the poverty line. Will the tenants try to use an electric heater (or indeed a hair dryer) to warm the bathroom when the boiler is broken and it is minus 12 outside. I have spent a lot of time working in slum housing and these are often the most dangerous houses where electics are concerned. Isn't a lot of the problem there *enforcement* of the building regulations rather than just the content of them? (I mean that slumlords are less likely than other people to care about doing things right.) |
#56
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Double/Triple outlet shaver sockets
"Adam Funk" wrote in message
... On 2014-03-09, ARW wrote: "Roger Mills" wrote in message ... On 09/03/2014 08:57, ARW wrote: Under the 16th edition there was a mention that sockets should not be placed where portable appliances could be plugged in and used in the bathroom - that included airing cupboards and just outside the bathroom door. Great! If you take extension leads into account, you shouldn't have a socket *anywhere*! There is more to it than just extension leads. Take a rented house where the landlord does not give a toss and the tenants are living below the poverty line. Will the tenants try to use an electric heater (or indeed a hair dryer) to warm the bathroom when the boiler is broken and it is minus 12 outside. I have spent a lot of time working in slum housing and these are often the most dangerous houses where electics are concerned. Isn't a lot of the problem there *enforcement* of the building regulations rather than just the content of them? (I mean that slumlords are less likely than other people to care about doing things right.) I have in the past disconnected dangerous circuits, given the landlord a reason why I have done that (backed up in writing) and left their property in a safe state. A few bad landlord will spoil it for the good ones and there will soon be the same laws with electrics as there are with gas - and I am not one that believes that a rented house needs an EICR every 12 months. -- Adam |
#57
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Double/Triple outlet shaver sockets
On 2014-03-13, ARW wrote:
"Adam Funk" wrote in message ... On 2014-03-09, ARW wrote: I have spent a lot of time working in slum housing and these are often the most dangerous houses where electics are concerned. Isn't a lot of the problem there *enforcement* of the building regulations rather than just the content of them? (I mean that slumlords are less likely than other people to care about doing things right.) I have in the past disconnected dangerous circuits, given the landlord a reason why I have done that (backed up in writing) and left their property in a safe state. You're a good man, doing the right thing & possibly losing repeat business. A few bad landlord will spoil it for the good ones and there will soon be the same laws with electrics as there are with gas - and I am not one that believes that a rented house needs an EICR every 12 months. I agree. |
#58
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Double/Triple outlet shaver sockets
On 11/03/2014 21:39, polygonum wrote:
On 11/03/2014 20:25, SteveW wrote: As our landing is at no point more than 3'6" from our bathroom door that'd mean no socket there for plugging in the vac for doing the stairs. SteveW For safety, the vacuum cleaner [1] should be at the bottom of the stairs, and you have a long hose to do the steps. Pulling a cleaner down the stairs can be very damaging to walls and persons. And vacuum cleaners. [1] Assuming not a tiny handheld device. Vac sits at bottom when doing the bottom half and on the half-landing when doing the top half and the top landing and then is moved onto the top landing to do the bathroom and bedrooms. SteveW |
#59
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Double/Triple outlet shaver sockets
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#60
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Double/Triple outlet shaver sockets
On 14/03/2014 21:11, Adam Funk wrote:
On 2014-03-11, polygonum wrote: On 11/03/2014 20:25, SteveW wrote: As our landing is at no point more than 3'6" from our bathroom door that'd mean no socket there for plugging in the vac for doing the stairs. SteveW For safety, the vacuum cleaner [1] should be at the bottom of the stairs, and you have a long hose to do the steps. Pulling a cleaner down the stairs can be very damaging to walls and persons. And vacuum cleaners. [1] Assuming not a tiny handheld device. I normally put the vacuum cleaner on the ground floor to vacuum up the stairs to the 1st floor, but I put it on the 1st floor landing to vacuum up the stairs to the 2nd. And I use a socket that is (just) close enough to let me vacuum the bathroom floor too. But I don't vacuum the bath itself. As we only have a "standard" house with an single upper floor, the thought of second upper floor never fleeted through my mind. But perfectly reasonable! :-) -- Rod |
#61
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Double/Triple outlet shaver sockets
wrote in message
... On Tuesday, March 11, 2014 7:15:51 PM UTC, wrote: wrote in message ... The nearest socket to my bathroom is a few metres from the door. Fortunately the vacuum cleaner has a long lead. Wait, the regs don't want to let me vacuum the floor? I believe that it was more to do with appliances such as electric heater, hair dryiers radios etc. Basically stuff that might be but should not be used whilst you are in the bath:-) So theyre ok with people vacuuming while in the bath? Reminds me of the when the gf's lad wanted to help me clean up after fitting an extractor fan(he was about 6 years old at the time). I had a Henry and I left him in the bathroom vacuuming up brick dust whilst went for a cig. When I went back inside the water in the toilet bowl was missing and the Henry was making a funny noise. Eek. I had one lad in his 20s that decided to wash an electrical appliance in the sink :/ I cant help thinking schools have lost the plot these days. It's NOT the schools. It's the PARENTS. -- Adam |
#62
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Double/Triple outlet shaver sockets
On 2014-03-15, ARW wrote:
It's NOT the schools. It's the PARENTS. +1 Those who advocate performance-related pay for teachers should carry the idea back a level. Teachers are (for the most part --- there are a few exceptions) trained & qualified professionals trying to do the right thing. Parents vary widely in quality, down to those who are unable to use contraceptives correctly. |
#63
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Double/Triple outlet shaver sockets
On 2014-03-14, polygonum wrote:
On 14/03/2014 21:11, Adam Funk wrote: On 2014-03-11, polygonum wrote: On 11/03/2014 20:25, SteveW wrote: As our landing is at no point more than 3'6" from our bathroom door that'd mean no socket there for plugging in the vac for doing the stairs. SteveW For safety, the vacuum cleaner [1] should be at the bottom of the stairs, and you have a long hose to do the steps. Pulling a cleaner down the stairs can be very damaging to walls and persons. And vacuum cleaners. [1] Assuming not a tiny handheld device. I normally put the vacuum cleaner on the ground floor to vacuum up the stairs to the 1st floor, but I put it on the 1st floor landing to vacuum up the stairs to the 2nd. And I use a socket that is (just) close enough to let me vacuum the bathroom floor too. But I don't vacuum the bath itself. As we only have a "standard" house with an single upper floor, the thought of second upper floor never fleeted through my mind. But perfectly reasonable! :-) In my neighbourhood, but not everywhere of course, early C.20 terraced houses with an original 2nd-floor room are fairly common. The top room has diagonal slopes between the front & back walls & the horizontal ceiling, & the stairs up to it were fairly obviously part of the original design of the house. |
#64
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Double/Triple outlet shaver sockets
On Saturday, March 15, 2014 2:49:22 PM UTC, wrote:
wrote in message ... On Tuesday, March 11, 2014 7:15:51 PM UTC, wrote: wrote in message ... So theyre ok with people vacuuming while in the bath? Reminds me of the when the gf's lad wanted to help me clean up after fitting an extractor fan(he was about 6 years old at the time). I had a Henry and I left him in the bathroom vacuuming up brick dust whilst went for a cig. When I went back inside the water in the toilet bowl was missing and the Henry was making a funny noise. Eek. I had one lad in his 20s that decided to wash an electrical appliance in the sink :/ I cant help thinking schools have lost the plot these days. It's NOT the schools. It's the PARENTS. Obviously its both. Since every generation of parents has a significant percentage of incompetents, any school with a clue would teach these things. NT |
#65
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Double/Triple outlet shaver sockets
On Sunday, 2 March 2014 13:02:39 UTC, Tricky Dicky wrote:
Brian I think the difference is that in a kitchen you may have your hands wet whilst handling electrical equipment, whereas in a bathroom you could be standing stark bollock naked wet all over in a pool of water in a cast iron bath like a lightening conductor providing a perfect route to earth. Back to OP, most of the shaver sockets provide a 230v and 115v socket and most shavers and toothbrushes will happily operate on either so you can plug two devices in. Richard YOU CANNOT operate two devices at the same time, because there is a mechanism within the dual socket that prevents you from doing that by closing the unused port when you plug the first device in. Someone should produce a simple double socket that simply plugs into the shaver point and supplies power to two points simultaneously so that people like me can have their electric toothbrush, waterpik and/or shaver charging at the same time. |
#66
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Double/Triple outlet shaver sockets
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#67
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Double/Triple outlet shaver sockets
In article ,
wrote: YOU CANNOT operate two devices at the same time, because there is a mechanism within the dual socket that prevents you from doing that by closing the unused port when you plug the first device in. Someone should produce a simple double socket that simply plugs into the shaver point and supplies power to two points simultaneously so that people like me can have their electric toothbrush, waterpik and/or shaver charging at the same time. Which mostly negates the reason for using an isolating transformer. To get the same safety, you need one isolating transformer per outlet. -- *A computer once beat me at chess, but it was no match for me at kickboxing. Dave Plowman London SW To e-mail, change noise into sound. |
#68
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Double/Triple outlet shaver sockets
Dave Plowman wrote:
To get the same safety, you need one isolating transformer per outlet. What's the logic of that? Obviously without a transformer you only need to touch live terminal [and have a path to earth] to get a shock, with a single outlet on a transformer, touching one terminal won't give you a shock, only touching both terminals. So if there are two outlets, how are you more likely to touch both sides of the transformer output? |
#69
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Double/Triple outlet shaver sockets
On 03/07/2016 18:36, Dave Plowman (News) wrote:
Which mostly negates the reason for using an isolating transformer. To get the same safety, you need one isolating transformer per outlet. Doesn't seem that difficult to imagine a lump that contains two isolating transformers, each feeding one socket, in one box. Or am I missing the significant issue? -- Rod |
#70
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Double/Triple outlet shaver sockets
On 03/07/16 19:37, Andy Burns wrote:
Dave Plowman wrote: To get the same safety, you need one isolating transformer per outlet. What's the logic of that? Obviously without a transformer you only need to touch live terminal [and have a path to earth] to get a shock, with a single outlet on a transformer, touching one terminal won't give you a shock, only touching both terminals. So if there are two outlets, how are you more likely to touch both sides of the transformer output? Double fault probably - Phase 1 goes to case in one appliance, Phase 2 goes to case in the other appliance. You are holding one appliance in each hand. Very unlikely I know - but it's the main logic that I can see. |
#71
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Double/Triple outlet shaver sockets
On 03/07/16 19:40, polygonum wrote:
On 03/07/2016 18:36, Dave Plowman (News) wrote: Which mostly negates the reason for using an isolating transformer. To get the same safety, you need one isolating transformer per outlet. Doesn't seem that difficult to imagine a lump that contains two isolating transformers, each feeding one socket, in one box. Or am I missing the significant issue? It would not even need 2 transformers - just one with dual isolated secondaries. Or triple isolated secondaries. I agree - it's about time such a beast came about as lots of people now have a couple of things on charge much of the time. |
#72
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Double/Triple outlet shaver sockets
On 03/07/2016 20:28, Tim Watts wrote:
On 03/07/16 19:40, polygonum wrote: On 03/07/2016 18:36, Dave Plowman (News) wrote: Which mostly negates the reason for using an isolating transformer. To get the same safety, you need one isolating transformer per outlet. Doesn't seem that difficult to imagine a lump that contains two isolating transformers, each feeding one socket, in one box. Or am I missing the significant issue? It would not even need 2 transformers - just one with dual isolated secondaries. Or triple isolated secondaries. I agree - it's about time such a beast came about as lots of people now have a couple of things on charge much of the time. Actually, one output that feeds different outlets at different times. Your toothbrush won't care if it's only charged 12 hours a day. |
#73
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Double/Triple outlet shaver sockets
On 03/07/2016 20:40, GB wrote:
On 03/07/2016 20:28, Tim Watts wrote: On 03/07/16 19:40, polygonum wrote: On 03/07/2016 18:36, Dave Plowman (News) wrote: Which mostly negates the reason for using an isolating transformer. To get the same safety, you need one isolating transformer per outlet. Doesn't seem that difficult to imagine a lump that contains two isolating transformers, each feeding one socket, in one box. Or am I missing the significant issue? It would not even need 2 transformers - just one with dual isolated secondaries. Or triple isolated secondaries. I agree - it's about time such a beast came about as lots of people now have a couple of things on charge much of the time. Actually, one output that feeds different outlets at different times. Your toothbrush won't care if it's only charged 12 hours a day. Bugger, why did I post that? That's a really, really good idea, that would have been worth patenting if I hadn't published it here. You could easily design circuitry that recognised when the user was operating the electric mouthwash and directed the output to that socket. Then all that would be required is a single isolating transformer and a tiny circuit board. |
#74
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Double/Triple outlet shaver sockets
and indeed a time machine as well, most probably.
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! wrote in message ... On Sunday, 2 March 2014 13:02:39 UTC, Tricky Dicky wrote: Brian I think the difference is that in a kitchen you may have your hands wet whilst handling electrical equipment, whereas in a bathroom you could be standing stark bollock naked wet all over in a pool of water in a cast iron bath like a lightening conductor providing a perfect route to earth. Back to OP, most of the shaver sockets provide a 230v and 115v socket and most shavers and toothbrushes will happily operate on either so you can plug two devices in. Richard YOU CANNOT operate two devices at the same time, because there is a mechanism within the dual socket that prevents you from doing that by closing the unused port when you plug the first device in. Someone should produce a simple double socket that simply plugs into the shaver point and supplies power to two points simultaneously so that people like me can have their electric toothbrush, waterpik and/or shaver charging at the same time. |
#75
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Double/Triple outlet shaver sockets
In article ,
Andy Burns wrote: Dave Plowman wrote: To get the same safety, you need one isolating transformer per outlet. What's the logic of that? Obviously without a transformer you only need to touch live terminal [and have a path to earth] to get a shock, with a single outlet on a transformer, touching one terminal won't give you a shock, only touching both terminals. So if there are two outlets, how are you more likely to touch both sides of the transformer output? You don't need an isolating transformer if you're not in any danger of touching one of the 'terminals'. It is used to make that fault less dangerous. If you have two appliances both with faults on the same iso tranny not too difficult to see how you could touch both terminals. -- *Elephants are the only mammals that can't jump * Dave Plowman London SW To e-mail, change noise into sound. |
#76
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Double/Triple outlet shaver sockets
On 04/07/2016 10:31, Dave Plowman (News) wrote:
In article , Andy Burns wrote: Dave Plowman wrote: To get the same safety, you need one isolating transformer per outlet. What's the logic of that? Obviously without a transformer you only need to touch live terminal [and have a path to earth] to get a shock, with a single outlet on a transformer, touching one terminal won't give you a shock, only touching both terminals. So if there are two outlets, how are you more likely to touch both sides of the transformer output? You don't need an isolating transformer if you're not in any danger of touching one of the 'terminals'. It is used to make that fault less dangerous. If you have two appliances both with faults on the same iso tranny not too difficult to see how you could touch both terminals. Surely, the whole thing could be replaced with a suitably sensitive RCD? |
#77
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Double/Triple outlet shaver sockets
On 04/07/16 10:42, GB wrote:
On 04/07/2016 10:31, Dave Plowman (News) wrote: In article , Andy Burns wrote: Dave Plowman wrote: To get the same safety, you need one isolating transformer per outlet. What's the logic of that? Obviously without a transformer you only need to touch live terminal [and have a path to earth] to get a shock, with a single outlet on a transformer, touching one terminal won't give you a shock, only touching both terminals. So if there are two outlets, how are you more likely to touch both sides of the transformer output? You don't need an isolating transformer if you're not in any danger of touching one of the 'terminals'. It is used to make that fault less dangerous. If you have two appliances both with faults on the same iso tranny not too difficult to see how you could touch both terminals. Surely, the whole thing could be replaced with a suitably sensitive RCD? The RCD can be sensitive to 1mA - but it will not reduce the belt you get whilst it breaks the circuit (10-40mS in practice). This is normally OK with dry contact, but if you are soaking wet, you're going to get a much heftier current through you for those 10-40mS which may prove fatal in a larger number of cases. |
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Double/Triple outlet shaver sockets
On 04/07/16 10:42, GB wrote:
Surely, the whole thing could be replaced with a suitably sensitive RCD? I thought we had decided not to talk about the European Union! -- it should be clear by now to everyone that activist environmentalism (or environmental activism) is becoming a general ideology about humans, about their freedom, about the relationship between the individual and the state, and about the manipulation of people under the guise of a 'noble' idea. It is not an honest pursuit of 'sustainable development,' a matter of elementary environmental protection, or a search for rational mechanisms designed to achieve a healthy environment. Yet things do occur that make you shake your head and remind yourself that you live neither in Joseph Stalins Communist era, nor in the Orwellian utopia of 1984. Vaclav Klaus |
#79
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Double/Triple outlet shaver sockets
On 2016-07-04, Tim Watts wrote:
On 04/07/16 10:42, GB wrote: Surely, the whole thing could be replaced with a suitably sensitive RCD? The RCD can be sensitive to 1mA - but it will not reduce the belt you get whilst it breaks the circuit (10-40mS in practice). This is normally OK with dry contact, but if you are soaking wet, you're going to get a much heftier current through you for those 10-40mS which may prove fatal in a larger number of cases. Is this the reason that isolating transformers (which are relatively old technology) are still required for bathroom shaver sockets, even if they are RCD-protected? (I'd been meaning to ask for a while.) |
#80
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Double/Triple outlet shaver sockets
On 05/07/16 12:02, Adam Funk wrote:
On 2016-07-04, Tim Watts wrote: On 04/07/16 10:42, GB wrote: Surely, the whole thing could be replaced with a suitably sensitive RCD? The RCD can be sensitive to 1mA - but it will not reduce the belt you get whilst it breaks the circuit (10-40mS in practice). This is normally OK with dry contact, but if you are soaking wet, you're going to get a much heftier current through you for those 10-40mS which may prove fatal in a larger number of cases. Is this the reason that isolating transformers (which are relatively old technology) are still required for bathroom shaver sockets, even if they are RCD-protected? (I'd been meaning to ask for a while.) yes. -- But what a weak barrier is truth when it stands in the way of an hypothesis! Mary Wollstonecraft |
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