Audio Precision System One Dual Domani Measuirement Systems
"Jerry" wrote in message ... "Arny Krueger" wrote in message ... : "Dave Plowman (News)" wrote in message : ... : snip : : That's impossible as the pins have insulation down most of their length - : only the end part makes contact. : : I know the German plugs were made that way It is good to know that the UK : plugs are made in a similar way. : : We still have all-brass pins here in the US. Any idea what the figures, due to such plug/sockets, are for shock or electrocution in the USA? No such detailed stats, but US consumer deaths due to electrical appliances are on the order of 1 per 500,000 persons per year. UK numbers appear to be more like 1 per 2 million persons per year. |
Audio Precision System One Dual Domani Measuirement Systems
In article , Terry
Casey wrote: On the other hand, why have laptop manufacturers started supplying their fully isolated PSUs with 3-pin connectors? Because if they supplied them with anything else in the UK, you'd need to buy an adaptor as well. Rod -- Virtual Access V6.3 free usenet/email software from http://sourceforge.net/projects/virtual-access/ |
Audio Precision System One Dual Domani Measuirement Systems
Roderick Stewart wrote:
In article , Terry Casey wrote: On the other hand, why have laptop manufacturers started supplying their fully isolated PSUs with 3-pin connectors? Because if they supplied them with anything else in the UK, you'd need to buy an adaptor as well. You mean like the lead that connects the three pin, 13A plug and terminates in the two pin figure of eight socket used by 80% of the laptop supplies in this room? I've got Euro leads for them, too, so I don't need to use adaptors when I'm travelling. The other two are wallwart supplies which plug into the wall and output the right voltage for the computer. I suspect there's been change in in legislation in at least one country where the laptops are sold, ands it's cheaper to change the design on all the units than make a different one for the offending country or countries. -- Tciao for Now! John. |
Audio Precision System One Dual Domani Measuirement Systems
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Audio Precision System One Dual Domani Measuirement Systems
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Audio Precision System One Dual Domani Measuirement Systems
"Terry Casey" wrote in message ... In article , says... We still have all-brass pins here in the US. Given the thickness (or should that be thinness) of the blades, is there an alternative? Good question. Reducing the size of the blade to allow for a sleeve would probably weaken it too much Brass isn't the strongest stuff in the world. For low current apps (less than a few amps) a proportionately stronger material like spring steel could be used for the insulated section. and I doubt the sockets would accept thicker blades. You've got that right! |
Why does discussion always tend towards power plugs?
On 04/01/2012 13:14, Jerry wrote:
On the slip side, the BS 1363 design can be very difficult to insert/remove, the force needed can be quite high (especially for the elderly or those with muscular problems), thus a risk of the terminals making poor contact, also because (as you say) there is less risk of a BS1363 plug being pulled out accidentally two other risks are present, should the lead become stranded the lead is damaged/parts company with the internal connections in either plug or appliance and more importantly should electrocution occur it is a dammed sight harder to purposely pull the appliance lead out of the socket from a distance. http://www.google.co.uk/products/cat...ed=0CEkQ8wIwBg AKA http://tinyurl.com/6wpkcts Andy |
Why does discussion always tend towards power plugs?
"Andy Champ" wrote in message . uk... : On 04/01/2012 13:14, Jerry wrote: : On the slip side, the BS 1363 design can be very difficult to : insert/remove, the force needed can be quite high (especially for : the elderly or those with muscular problems), thus a risk of the : terminals making poor contact, also because (as you say) there is : less risk of a BS1363 plug being pulled out accidentally two : other risks are present, should the lead become stranded the lead : is damaged/parts company with the internal connections in either : plug or appliance and more importantly should electrocution occur : it is a dammed sight harder to purposely pull the appliance lead : out of the socket from a distance. : : http://www.google.co.uk/products/cat...ed=0CEkQ8wIwBg : URL relates to a "Thermoplasic moulding 13 AMP Fused Easy pull handle BS 1363 IP20 Rated Grip for easy removal of plug from socket" ....and?........ That's product is great for someone with a problem with their finger-grip, it does nothing to help those with muscular problems, nor does it provide a solution to the other two issues I mentioned relating to flex damage from being strained and emergency disconnection (although if the flex was cable tied to the handle...). -- Regards, Jerry. |
Why does discussion always tend towards power plugs?
On Wed, 4 Jan 2012 21:22:30 -0000, Terry Casey
wrote: In article , says... On 04/01/2012 13:14, Jerry wrote: On the slip side, the BS 1363 design can be very difficult to insert/remove, the force needed can be quite high (especially for the elderly or those with muscular problems), thus a risk of the terminals making poor contact, also because (as you say) there is less risk of a BS1363 plug being pulled out accidentally two other risks are present, should the lead become stranded the lead is damaged/parts company with the internal connections in either plug or appliance and more importantly should electrocution occur it is a dammed sight harder to purposely pull the appliance lead out of the socket from a distance. http://www.google.co.uk/products/cat...ed=0CEkQ8wIwBg AKA http://tinyurl.com/6wpkcts Andy Google doesn't help with short links, does it? I got it down to this, but that's the best I can do ...! http://www.google.co.uk/products/cat...=uk&hl=en&cid= 9928575363582767211&q=easy%20plug I must have got it confused though because I assume '&cid' means customer ID and they didn't spot that the request came from someone else! Wow, those prices aren't pretty. I believe these things are available on a sort of prescription basis for the elderly and people with arthritis. d |
Why does discussion always tend towards power plugs?
"Woody" wrote
The other issue is that continental electricians don't seem to have any concept of live and neutral. BS4343 outlets are very clearly marked L and N on both plug or socket but my experience (caravanning, mainly in France) is that more are reverse wired than correctly wired. Perhaps it is because (from what I have seen) most Euro MCB's are dual pole and will break both both conductors under fault conditions (remember most Euro wiring is radial) Not sure I see the relevance of radial circuits to two-pole MCBs. Fusing in the UK used to be two-pole many years ago, but neutral fusing was dropped because it was possible for the neutral fuse only to fail, leaving the circuit inoperative yet still live. Whilst obviously with MCBs it would be possible to return to two-pole isolation I'm not sure that I see the benefit. Nor, presumably, do the committee who write BS7671. so polarity at the point of delivery is largely academic. I disagree. In my view polarity at the point of delivery can be important (depending on appliance) regardless of the number of poles in the MCB. I purchased a 10A two-pole MCB (LeGrand) for my caravan in a French DIY shed for less than a 6A single pole from a UK wholesaler. Single-pole MCBs to BS7671 (any current rating) cost around £2-£3, how much less than that was this LeGrand 2-pole job? Is there any wonder we have to take more steps in our protection chain than they do? What do mean by "more steps" and what has that to do with the price of MCBs? David. |
Audio Precision System One Dual Domani Measuirement Systems
Terry Casey wrote:
Andy Burns says... http://www.pcworld.co.uk/gbuk/retrak...83932-pdt.html A bit late in the day, perhaps, with so many laptops now using earthed 'clover leaf' connectors? I must admit I much prefer the figure-of-eight connector. The mains charger that was supplied with my Dell laptop had a cloverleaf, but I purchased the Dell travel charger which is 1) much smaller and lighter, 2) can run from 12V or 110-240V and 3) uses a figure-of-8 connector. £15 quid is a bit steep, but I picked up one anyway, works nicely, I think I will end up discarding the retracting reel, it adds too much bulk. |
Audio Precision System One Dual Domani Measuirement Systems
On Tue, 3 Jan 2012 18:42:22 +0000, J. P. Gilliver (John)
wrote: I agree, the BS1363 plug is not my favourite design. Some years ago there It is far too big for most of the devices currently on it, yes - and also, the three ratings for the matching fuse (BS1362) widely available are far too high: 3, 5, and 13A. (Even 1A - which you _can_ get in BS1362, but you don't half have to hunt for it Huh? RS have 1,2,3,5,7,10,13 readily available. This is not what I'd call "half having to hunt for". - is too high for most electronic appliances.) IMO, the fact that the plugs are fused actually gives a _false_ sense of security, _because_ the fuse ratings are so high; all that fuse can effectively protect is the mains lead (or power cord, as it's called in US) itself. The fuse is only *designed* to protect the mains lead, not the device to which the lead is connected. That's what the device's internal fuse is for. |
Audio Precision System One Dual Domani Measuirement Systems
In article ,
Jerry wrote: Because it can get accidentally switched off due to stuff being moved or pushed to the back of the cupboard! You keep your fridge in a cupboard? Stick some gaffer tape over the switch. -- *Never underestimate the power of stupid people in large groups Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
In article , Terry Casey
wrote: On the other hand, why have laptop manufacturers started supplying their fully isolated PSUs with 3-pin connectors? Because if they supplied them with anything else in the UK, you'd need to buy an adaptor as well. I'm not sure what you mean by that. Are you implying that it is no longer legal in the UK to supply equipment with twin flex (and matching 2-pole connector)? I wasn't implying anything at all about what's legal, because I don't know, but I do know that if you want to plug an electrical appliance into a wall socket in the UK, it needs to have a 3 pin UK plug on it. Therefore if they put any other kind of plug on it, you'd have to use an adaptor. Rod. -- Virtual Access V6.3 free usenet/email software from http://sourceforge.net/projects/virtual-access/ |
Audio Precision System One Dual Domani Measuirement Systems
On Wed, 4 Jan 2012 19:51:51 -0000, Terry Casey
wrote: In article en.co.uk, says... In article , Terry Casey wrote: On the other hand, why have laptop manufacturers started supplying their fully isolated PSUs with 3-pin connectors? Because if they supplied them with anything else in the UK, you'd need to buy an adaptor as well. I'm not sure what you mean by that. Are you implying that it is no longer legal in the UK to supply equipment with twin flex (and matching 2-pole connector)? Nothing to do with legality, just practicability. If you want to sell goods in the UK market, it is a pretty good idea to supply them with a UK mains plug. Adaptors are for when you travel, not at home. One current exception is mains-powered shavers (only a few left now), that use a two-pin plug specifically designed for an isolated bathroom connector. A friend of mine has recently built a new house and her wiring has in one room - quite legally - an old-fashioned 5-amp round pin socket. d |
Audio Precision System One Dual Domani Measuirement Systems
Don Pearce wrote:
A friend of mine has recently built a new house and her wiring has in one room - quite legally - an old-fashioned 5-amp round pin socket. The Landmark Trust still use these extensively, including in newly restored properties. They're on the lighting circuit, I was told. André Coutanche |
Audio Precision System One Dual Domani Measuirement Systems
"Roderick Stewart" wrote in message .myzen.co.uk... : In article , Terry Casey : wrote: : On the other hand, why have laptop manufacturers started supplying their : fully isolated PSUs with 3-pin connectors? : : Because if they supplied them with anything else in the UK, you'd need to : buy an adaptor as well. : : : I'm not sure what you mean by that. Are you implying that it is no : longer legal in the UK to supply equipment with twin flex (and matching : 2-pole connector)? : : I wasn't implying anything at all about what's legal, because I don't know, but : I do know that if you want to plug an electrical appliance into a wall socket : in the UK, it needs to have a 3 pin UK plug on it. Therefore if they put any : other kind of plug on it, you'd have to use an adaptor. : Except Terry was talking about the *female* plug on the end of the power lead that is inserted into the PSU... The plug that is inserted into the wall socket, AIUI, those have and will always be local to the official area of sale - otherwise, in your own words, an adapter would be required. Duh! :~) -- Regards, Jerry. |
Audio Precision System One Dual Domani Measuirement Systems
"Don Pearce" wrote in message ... : On Wed, 4 Jan 2012 19:51:51 -0000, Terry Casey : wrote: : snip : : Nothing to do with legality, just practicability. If you want to sell : goods in the UK market, it is a pretty good idea to supply them with a : UK mains plug. Adaptors are for when you travel, not at home. One : current exception is mains-powered shavers (only a few left now), that : use a two-pin plug specifically designed for an isolated bathroom : connector. Not sure what Terry means by "Mains Powered" (only 240v ?), there seems to be quite a few "mains powered" razors still being sold, many do have rechargeable batteries but still come with a two pin power lead for use in UK isolated shaver outlets to allow for recharging. In fact IIRC MK actually make, for the *UK market* two pin shaver outlets /without/ a isolating transformer for fitting into non-hazardous areas such as bedrooms and dressing rooms. : : A friend of mine has recently built a new house and her wiring has in : one room - quite legally - an old-fashioned 5-amp round pin socket. : ....and very useful they are too, allowing for remote operation of non fixed lighting. Their 15A round pin cousins are still legal too, of course they have to be installed on radial circuits, one such use is on emersion heaters were the control switch is remote from the water tanks location, thus enabling a definite DP isolation to be achieved when servicing/repair is required. -- Regards, Jerry. |
Audio Precision System One Dual Domani Measuirement Systems
"Paul Ratcliffe" wrote in message ... : On Tue, 3 Jan 2012 18:42:22 +0000, J. P. Gilliver (John) : wrote: : : I agree, the BS1363 plug is not my favourite design. Some years ago there : : It is far too big for most of the devices currently on it, yes - and : also, the three ratings for the matching fuse (BS1362) widely available : are far too high: 3, 5, and 13A. (Even 1A - which you _can_ get in : BS1362, but you don't half have to hunt for it : : Huh? RS have 1,2,3,5,7,10,13 readily available. This is not what : I'd call "half having to hunt for". Except that if you said "RS" to most of the UK's population they would either look back blankly or think of a Ford motor car that was popular in the 1970s and '80s. Again Mr Ratcliffe shows that he lives only in a bubble of techo-babble speak... : : - is too high for most : electronic appliances.) IMO, the fact that the plugs are fused actually : gives a _false_ sense of security, _because_ the fuse ratings are so : high; all that fuse can effectively protect is the mains lead (or power : cord, as it's called in US) itself. : : The fuse is only *designed* to protect the mains lead, not the device to : which the lead is connected. That's what the device's internal fuse is for. Assuming it has one, most domestic appliances don't. Again Mr Ratcliffe shows that he lives only in a bubble of techo-babble speak... -- Regards, Jerry. |
Audio Precision System One Dual Domani Measuirement Systems
"Dave Plowman (News)" wrote in message ... : In article , : Jerry wrote: : Because it can get accidentally switched off due to stuff being : moved or pushed to the back of the cupboard! : : You keep your fridge in a cupboard? Err, news:alt.troll is that away Mr Plowman === But heck, you have kitchen cupboards that you don't put anything in?! : : Stick some gaffer tape over the switch. : Oh right, so your solution is a bodge on a bodge, rather than doing the job right first time? |
Audio Precision System One Dual Domani Measuirement Systems
In article ,
Don Pearce wrote: A friend of mine has recently built a new house and her wiring has in one room - quite legally - an old-fashioned 5-amp round pin socket. All the 'old' round 3 pin sockets still comply to UK regs - provided they are on a suitable circuit. A common use is for floor or table lamps switched from the wall, etc. If on a dimmer, plugging the hoover into that wouldn't be a good idea... Some of the modern versions available are shuttered. -- *Growing old is inevitable, growing up is optional * Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
In article ,
Jerry wrote: : You keep your fridge in a cupboard? Err, news:alt.troll is that away Mr Plowman === Not surprised you have that to hand. But heck, you have kitchen cupboards that you don't put anything in?! I don't put 'anything' in the fridge housing, no. Or the one for the washing machine etc either. I'd say it's rather rare for anyone to keep a fridge in an actual cupboard these days. Putting something used for storage inside something else used for storage strikes me as wasting space. But then it does sound like you live somewhere with something not representative of most kitchens. : : Stick some gaffer tape over the switch. : Oh right, so your solution is a bodge on a bodge, rather than doing the job right first time? FFS. If it really concerned me I'd not be whinging about it here - I'd have changed it years ago. -- *I used to have an open mind but my brains kept falling out * Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
"Dave Plowman (News)" wrote in message ... : In article , : Jerry wrote: : : You keep your fridge in a cupboard? : : Err, news:alt.troll is that away Mr Plowman === : : Not surprised you have that to hand. Well when the suit fits... : : But heck, you have kitchen cupboards that you don't put anything : in?! : : I don't put 'anything' in the fridge housing, no. Or the one for the : washing machine etc either. I'd say it's rather rare for anyone to keep a : fridge in an actual cupboard these days. Putting something used for snip further trolling FFS, what pills are you on these days Plowman?! The cupboard *next* to a free standing or otherwise fridge, were electricians (and you, IIRC) often suggest the socket for the fridge supply is placed -along with a bloody great hole on the side of said cupboard for the plug to pass through- rather than the more professional approach of an accessible and visible 'neon-indicated' switched-fuse plate and remote fixed flex outlet or (if disconnection of the appliance needs to be tools free) a 15A round pin socket outlet. |
Audio Precision System One Dual Domani Measuirement Systems
"Dave Plowman (News)" wrote in message
... In article , Don Pearce wrote: A friend of mine has recently built a new house and her wiring has in one room - quite legally - an old-fashioned 5-amp round pin socket. All the 'old' round 3 pin sockets still comply to UK regs - provided they are on a suitable circuit. A common use is for floor or table lamps switched from the wall, etc. If on a dimmer, plugging the hoover into that wouldn't be a good idea... Some of the modern versions available are shuttered. And of course the 15A version is the de-facto standard for theatrical stage lighting. David. |
Audio Precision System One Dual Domani Measuirement Systems
In article ,
Jerry wrote: FFS, what pills are you on these days Plowman?! The cupboard *next* to a free standing or otherwise fridge, were electricians (and you, IIRC) often suggest the socket for the fridge supply is placed -along with a bloody great hole on the side of said cupboard for the plug to pass through- rather than the more professional approach of an accessible and visible 'neon-indicated' switched-fuse plate and remote fixed flex outlet or (if disconnection of the appliance needs to be tools free) a 15A round pin socket outlet. Right. You need a neon to tell you the fridge is on? And a handy switch to switch it off? Have you ever sought treatment? -- *Support bacteria - they're the only culture some people have * Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
"Dave Plowman (News)" wrote in message ... yet more trolling snipped |
Audio Precision System One Dual Domani Measuirement Systems
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Audio Precision System One Dual Domani Measuirement Systems
"Terry Casey" wrote in message ... : In article , : LID says... : snip : : Not sure what Terry means by "Mains Powered" (only 240v ?), : : Err ... : : That was Don, I think you'll find ... So it was, sorry! :~( -- Regards, Jerry. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 3, 4:39*am, "David Looser" wrote:
wrote in message ... The British electrical standards are the dumbest on planet, or at least the dumbest I have ever run into. Except for the Japanese, who are combine the worst possible voltage standard with two different frequencies. In the US, we have two voltages in (all but really really old) houses: 120 and 240, although most outlets are 120, the ranges, clothes dryers and air conditioners are 240. And that 240 is balanced. If we were SERIOUS audiophiles, we'd have 240 volt four pin dryer outlets put in our listening rooms and run our power amps on 240. A very large number of countries run their mains supplies at 220-240V, not just the UK! Electrical standards were not designed for the benefit of audiophools, but in practice there's nothing wrong with the 230V standard in this regard. The standard of electrical installations I've seen in the US are far worse than those normally encountered here. And the high-powered audio equipment I've seen in the US runs off 120V thus supplies requiring heavy-guage mains flex. Definitely no improvement on what we have here! No, my beef is not with 220/240 volt distribution-I prefer it. It's the goofy room wiring in loops and the goofy sockets the Brits use I think are ridiculous. That's why I said the Japanese standard was the worst of all. In the US we are blessed with having three wire split phase 120/240 in most every house built since WWII and many earlier. We just don't use it for audio, and my argument is that we should. We also have 60 as opposed to 50 hz, which is better from a power supply design standpoint, although prudence dictates design for any frequency between slightly under 50 to well over 60 Hz. except in the case of motors. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 3, 5:24*am, "David Looser" wrote:
"Eiron" wrote in message ... Can I just mention another example of European Union lunacy? Voltage is standardized at 230v +- a fudge factor so that the UK can keep to 240v and the rest of Europe can keep 220v with no plans for any country to adopt 230v. Now that is dumb! I'm not sure it is so dumb There always was a tolerance range on the UK 240V mains, what happened was that these tolerance limits were widened and re-centred on 230V. But these new limits are now EU-wide so any equipment manufactured to these new limits (230V +/- 10%) is suitable for sale anywhere within the EU. And the UK plugs are rather large. That would be a valid criticism. It spoils the lines of a laptop bag.... I agree, the BS1363 plug is not my favourite design. Some years ago there was a serious attempt to introduce a EU standard plug & socket, an attempt that failed because of the NIH (not-invented-here) factor. I rather like the German 'Shucko' socket and would be happy to see it replace the BS1363 socket here, but can you image the reaction of the Daily Mail readers? :-) That or the Australian socket would be my choice, or one of the 220 NEMA sockets. If you are going to build "valve" equipment for the world market you need a winding scheme on the PT that gives bogey filament voltages at 220, 230 and 240 volts and, I understand that in Australia 250 vac is not uncommon in practice. In Britain one may readily obtain a "site transformer" which will give what is advertised as 110 volt balanced power. I haven't been there in 20+ years, can any Brits tell me if that's really true or if 120, or more, or less, is actually common? They are used for electric drills and whatnot outdoors. Vintage US gear works fine at 110, but mostly not current stuff. |
Audio Precision System One Dual Domani Measuirement Systems
In article
, wrote: No, my beef is not with 220/240 volt distribution-I prefer it. It's the goofy room wiring in loops and the goofy sockets the Brits use I think are ridiculous. You need to look up fires caused by poorly specified house distribution systems in the US, before criticising the UK. It is many times worse than here. -- *I used to have an open mind but my brains kept falling out * Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 3, 6:21*am, "Jerry" wrote:
"Geoffrey S. Mendelson" wrote in ... snip : The UK used several systems, and a friend of mine who traveled to London : in the 1970's found that there were four different electrical systems in use : in various parts of the city. By that time they had been standardized to : 240 volts 50Hz, but the older plugs and lightbulbs (different ones for : different systems) remained. Hmm, surely the 1970s were a tad late for different voltages (certainly for London), the national grid had been started long before WW2 and was complete not long after, are you are not thinking of the different designs of electrical circuits and sockets in use or perhaps a different time period? I suppose that some building with their own (derived/generated) power supplies might have had (still have) 'odd' systems to suit their own needs, an exception rather than the rule. -- Regards, Jerry. A national grid has no need to standardize end user voltages, only frequency. Many different HV line voltages are used: houses and small businesses get their power off a "pole pig" or a ground mounted transformer. They always have trim windings and somewhere in the system must be a tap changer setup because I2R losses change over the day as the power demands vary widely. It would be possible to have 220 in Northern England, 240 in Scotland and 230-or 117, or 277, or any number at all-in Southampton. because off a stepdown transformer you are rarely going more than 500 meters to 1 km, usually less. Switchmode equipment doesn't care. Solid state analog equipment is regulated and has a design input range, power amps are often unregulated and just make less power at lower line voltage. Tube (valve) equipment wants its heaters at bogey voltage. In the case of tungsten filaments on transmitting tubes it needs to be close to spot on. |
Audio Precision System One Dual Domani Measuirement Systems
In article
, wrote: n Britain one may readily obtain a "site transformer" which will give what is advertised as 110 volt balanced power. I haven't been there in 20+ years, can any Brits tell me if that's really true or if 120, or more, or less, is actually common? They are used for electric drills and whatnot outdoors. Vintage US gear works fine at 110, but mostly not current stuff. 110 volt via an isolating transformer is used on building sites etc for all power tools. Purely for safety reasons. -- *I'm pretty sure that sex is better than logic, but I can't prove it. Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 4, 2:06*am, "David Looser" wrote:
"Jerry" wrote Not very often, just as kids in areas that do not use the UK's BS1363 plug/socket don't tend to poke things into other types of sockets, why because they are *taught* not to whilst being supervised, of course that is to hard for average UK parents to manage so the state has to hold their hands so to speak! And with that paragraph you have blown any credibility you might have hoped to acquire! David. Making things idiotproof makes better idiots. The British nanny state is disgusting, dysgenic and depressing but the US is headed in the exact same direction. The only bright spot is that when WE implode our empire as you did yours (and, sadly, we helped: Enoch Powell was oh so correct to hate us for that, although I was not born when the stuff started and a seven year old when it pretty much ended: we visited your lily pad back then and it was still pounds, shillings, pence and no one could make change) the entire economic system is coming down too and it will have to end pretty much all over the West. So don't take my comments the wrong way. We're _worse_ than you are because we have the example of the mother country at our nose and we're doing it anyway. God Save the Queen. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 4, 5:27*am, Terry Casey wrote:
In article , says... In message , Geoffrey S. Mendelson writes: The UK used several systems, and a friend of mine who traveled to London in the 1970's found that there were four different electrical systems in use in various parts of the city. By that time they had been standardized to 240 volts 50Hz, but the older plugs and lightbulbs (different ones for different systems) remained. Your friend sounds confused. The 240/50 was standardised a long time before 1970, and the various plugs and bulbs had been running on 240/50 for some decades by then. I remember a major upgrade taking place in West Ham to upgrade the distribution network from 215V AC to the standard 240V while I was at school there in the late 50s. Nearby Ilford still had 200V DC, a hangover from when Ilford town council generated 600V DC for its tramways and obviously found it convenient to stick to DC for domestic supplies. When it was converted to 240V AC I do not know but there was no evidence of anything remotely DC connected when I moved there in the early 70s. In the US there were 25 Hz buildings and even houses as late as the early 70s and a few DC apartment and office buildings in New York later than that. I stayed at a swank highrise in Chicago in the early 70s that was AC by then but was originally DC and there was evidence of it in the labels tacked in the fuse box. We also had a little 50 Hz before the war. I've always wanted to do a full study of DC and odd frequency power historically in the US but the research is not helped by the electrical utilities. I think they are ashamed of it. |
Audio Precision System One Dual Domani Measuirement Systems
On Jan 27, 6:25*pm, "Dave Plowman (News)"
wrote: In article , * wrote: *No, my beef is not with 220/240 volt distribution-I prefer it. It's the goofy room wiring in loops and the goofy sockets the Brits use I think are ridiculous. You need to look up fires caused by poorly specified house distribution systems in the US, before criticising the UK. It is many times worse than here. In the US, electrical house fires are mostly a result of incompetent DIY wiring or failed appliances......or arson. |
Audio Precision System One Dual Domani Measuirement Systems
"Dave Plowman (News)" wrote in message ... : In article : , : wrote: : No, my beef is not with 220/240 volt distribution-I prefer it. It's : the goofy room wiring in loops and the goofy sockets the Brits use I : think are ridiculous. : : You need to look up fires caused by poorly specified house distribution : systems in the US, before criticising the UK. It is many times worse than : here. : But that is not caused but the use of radial circuits (opposed to a ring circuit), it's the poor hardware (fittings and conductor) used that causes the problem. If radial circuits were a fire hazard, never mind actually being the cause of fires, then just about every film/TV studio, theatre and other entertainment venues that have a fixed lighting rig would either have burnt down or been shut down on H&S grounds! There is nothing wrong with radial circuits, the only two down sides are amount of cabling needed and the size of the breaker panel - IIRC ring circuits were introduced into the UK in an attempt to save on cabling, due to cost. Radial circuits are still, to this day, permitted. -- Regards, Jerry. |
Audio Precision System One Dual Domani Measuirement Systems
In article
, wrote: You need to look up fires caused by poorly specified house distribution systems in the US, before criticising the UK. It is many times worse than here. In the US, electrical house fires are mostly a result of incompetent DIY wiring or failed appliances......or arson. One of the major reasons is those 'wire nuts' oh so common, and banned over here many many years ago. -- *Some people are alive only because it's illegal to kill them * Dave Plowman London SW To e-mail, change noise into sound. |
Audio Precision System One Dual Domani Measuirement Systems
In article
, wrote: and it was still pounds, shillings, pence and no one could make change In the days of lsd, the average person could do rudimentary mental arithmetic. These days most need a calculator, even although a base 10 system makes things simpler. But of you're so dismissive of a non decimal currency, why does the US stick to imperial measurements for just about everything else? -- *Not all men are annoying. Some are dead. Dave Plowman London SW To e-mail, change noise into sound. |
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