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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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BS 1363 plug on a two conductor cord of a lamp.
Hi,
Does installation of a BS 1363 plug, with a ground pin, on a two conductor cord of a table lamp, violate wiring regulations? I don't imagine an unconnected ground pin posing a hazard. Does a lamp in Britain ever have a cord with a ground conductor? Thanks, ... Peter E. |
#2
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BS 1363 plug on a two conductor cord of a lamp.
Yes, it does. And for very good reason - it *MAY* give the impression that the device is grounded. Keep in mind that if there are people stupid enough to put a three-pin plug on a two-conductor cord, there are those stupid enough to believe that the third pin does something.
Play to the worst case scenario, not the best. Peter Wieck Melrose Park, PA |
#3
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BS 1363 plug on a two conductor cord of a lamp.
No, and yes, respectively.
BS1363 dates from 1947. All rewireable BS1363 plugs have a metal earth pin. Class 0 table lamps were banned from sale in about 1975. Class I (earthed) and class II (double insulated) are permitted. Only moulded plugs for class II equipment may be made with an ISOD ( Insulated Shutter Operating Device) which is a plastic earth pin. Martin. Peter Easthope wrote: Hi, Does installation of a BS 1363 plug, with a ground pin, on a two conductor cord of a table lamp, violate wiring regulations? I don't imagine an unconnected ground pin posing a hazard. Does a lamp in Britain ever have a cord with a ground conductor? Thanks, ... Peter E. |
#4
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BS 1363 plug on a two conductor cord of a lamp.
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#5
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BS 1363 plug on a two conductor cord of a lamp.
On Tuesday, November 1, 2016 at 3:02:15 PM UTC-7, Andy Burns wrote:
It's perfectly normal to have a 3 pin plug on a 2 core flex to a lamp ... unless the lamp has any metalwork, in which case it must be a 3 core flex to earth that. OK, thanks. A Luxo L-1 lamp in Britain would have a three conductor flex. All such lamps I've seen in North America have flat two conductor lamp cord. The width fits closely in the square Luxo tubes. A L-1 in Britain has a round flex; correct? Thanks again, ... Peter E. |
#6
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BS 1363 plug on a two conductor cord of a lamp.
On Tuesday, November 1, 2016 at 6:02:15 PM UTC-4, Andy Burns wrote:
wrote: Yes, it does. Rubbish! It's perfectly normal to have a 3 pin plug on a 2 core flex to a lamp ... unless the lamp has any metalwork, in which case it must be a 3 core flex to earth that. Try that in the US, and you would never pass UL (or CA in Canada). Betcha you would not get past Euro CE either. Peter Wieck Melrose Park, PA |
#7
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BS 1363 plug on a two conductor cord of a lamp.
Peter Easthope wrote:
A Luxo L-1 lamp in Britain would have a three conductor flex. All such lamps I've seen in North America have flat two conductor lamp cord. The width fits closely in the square Luxo tubes. Don't know, I've hankered after one, but don't own one. A L-1 in Britain has a round flex; correct? I notice the manual shows the double-insulated symbol, so 2-core flex could be used which would normally be flat, though you /can/ get round 2-core flex. While most UK plugs and sockets are BS-1363 square 3-pin, the older BS-546 round 3-pin plugs and sockets are still acceptable and available brand new. The even older BS-372 round 2-pin are marginally smaller and belong in museums, the same smaller spacing is used in BS-4573 plugs which are typically only seen in moulded-on versions, and exclusively used on shavers. Other than that, there are proprietary round 2 and 3-pin inline connectors not intended for plugging into wall sockets, which conform to the general BS-5733 safety standard, I use them on all my power tools, annoyingly these are similar but not mateable between manufacturers, e.g. https://www.mkelectric.com/en-ar/Products/WD/PortablePower/duraplug/Leadconnectors/Pages/LCP102.aspx |
#8
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BS 1363 plug on a two conductor cord of a lamp.
On 01/11/2016 21:07, Peter Easthope wrote:
Hi, Does installation of a BS 1363 plug, with a ground pin, on a two conductor cord of a table lamp, violate wiring regulations? I don't imagine an unconnected ground pin posing a hazard. Does a lamp in Britain ever have a cord with a ground conductor? Thanks, ... Peter E. It depends on whether the handleable part of the lamp is metal or metal-finish, then must be grounded and whether there is a gooseneck or other movement containing the flex and therefore chaffing possibility . All quite sensible really |
#9
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BS 1363 plug on a two conductor cord of a lamp.
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#10
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BS 1363 plug on a two conductor cord of a lamp.
Andy Burns prodded the keyboard with:
wrote: Yes, it does. Rubbish! It's perfectly normal to have a 3 pin plug on a 2 core flex to a lamp ... unless the lamp has any metalwork, in which case it must be a 3 core flex to earth that. +1 -- Best Regards: Baron. |
#11
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BS 1363 plug on a two conductor cord of a lamp.
En el artículo ,
Peter Easthope escribió: A Luxo L-1 lamp in Britain would have a three conductor flex. if it has exposed metalwork, yes, unless it is double-insulated, in which case it can have a two-core flex. All such lamps I've seen in North America have flat two conductor lamp cord. because your electrical system is vastly inferior. The width fits closely in the square Luxo tubes. A L-1 in Britain has a round flex; correct? flex in Britain can be flat or round. Round is usually three-core; phase, neutral and earth. -- (\_/) (='.'=) systemd: the Linux version of Windows 10 (")_(") |
#12
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BS 1363 plug on a two conductor cord of a lamp.
Baron wrote:
Andy Burns prodded the keyboard with: wrote: Yes, it does. Rubbish! It's perfectly normal to have a 3 pin plug on a 2 core flex to a lamp ... unless the lamp has any metalwork, in which case it must be a 3 core flex to earth that. +1 Unless it is (as is probably more common) of double insulated/ class II (square within a square symbol) construction, in which case it will have a 2-core sheathed flex (typically type H03VVH2-F) and no provision for earthing. (Ignoring the rare class 0 ones made before about 1975 that are still in service, which cannot legally be sold and are probably lethally decrepit by now anyway.) Martin. |
#13
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BS 1363 plug on a two conductor cord of a lamp.
Andy Burns wrote:
Peter Easthope wrote: A Luxo L-1 lamp in Britain would have a three conductor flex. All such lamps I've seen in North America have flat two conductor lamp cord. The width fits closely in the square Luxo tubes. Don't know, I've hankered after one, but don't own one. A L-1 in Britain has a round flex; correct? I notice the manual shows the double-insulated symbol, so 2-core flex could be used which would normally be flat, though you /can/ get round 2-core flex. Agreed, I looked at the same manual. It is also "CE" marked. (3-core flex is probably not allowed on double-insulated equipment. It certainly is not commonly used, if at all.) While most UK plugs and sockets are BS-1363 square 3-pin, the older BS-546 round 3-pin plugs and sockets are still acceptable and available brand new. But portable domestic equipment rated up to 13A must be supplied with a fitted BS1363 plug. Or fitted with an equivalent approved BS1363-5 "conversion plug" permanently enclosing the original (e.g. EN 50075 europlug) but not an ordinary travel adaptor. The even older BS-372 round 2-pin are marginally smaller and belong in museums, the same smaller spacing is used in BS-4573 plugs which are typically only seen in moulded-on versions, and exclusively used on shavers. Other than that, there are proprietary round 2 and 3-pin inline connectors not intended for plugging into wall sockets, which conform to the general BS-5733 safety standard, I use them on all my power tools, annoyingly these are similar but not mateable between manufacturers, e.g. https://www.mkelectric.com/en-ar/Products/WD/PortablePower/duraplug/Leadconnectors/Pages/LCP102.aspx |
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