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Switched Live Sleeving
Comments
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fenwick458 said:grumbler said:Jeepers_Creepers said:Mickey666 said:
In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?Still better that brown&blue or red&black? And, AFAIK, such cable is used to connect a single light fitting (or a series) and in this case it doesn't matter which wire is switched. Neither does it matter where the wire is connected to the switch or to a junction box.ETA: Well, for wiring E27 or E14 it does matter.Jeepers_Creepers said:Mickey666 said:In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?
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fenwick458 said:grumbler said:Jeepers_Creepers said:Mickey666 said:
In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?Still better that brown&blue or red&black? And, AFAIK, such cable is used to connect a single light fitting (or a series) and in this case it doesn't matter which wire is switched. Neither does it matter where the wire is connected to the switch or to a junction box.ETA: Well, for wiring E27 or E14 it does matter.Jeepers_Creepers said:Mickey666 said:In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?
I stand doubly corrected :-)
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grumbler said:fenwick458 said:grumbler said:Jeepers_Creepers said:Mickey666 said:
In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?Still better that brown&blue or red&black? And, AFAIK, such cable is used to connect a single light fitting (or a series) and in this case it doesn't matter which wire is switched. Neither does it matter where the wire is connected to the switch or to a junction box.ETA: Well, for wiring E27 or E14 it does matter.Jeepers_Creepers said:Mickey666 said:In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.
Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?
you seem to have gotten Switched live and permanent live confused with live and neutral...0 -
In J_C's wiring diagram that shows twin brown to the light switch it would not be possible to identify the switched and permanently live. If this is a 'bad thing' (or even against wiring regs?) then why have twin-brown cable at all?
As for the whole subject of visual identification - does any serious electrician really RELY on such things anyway? I've always thought the maxim 'trust but verify' applies in such circumstances. Thus, if I see a light switch wired with blue-brown cable with a brown sleeve on the blue, I might initially assume that the brown core is the permanent live and the brown-sleeved blue core is the switched live but I would NEVER rely on such an assumption and would always test it for absolute confirmation (if necessary). There are too many 'DIY-cowboys' about to rely on anything - hence 'trust but verify'0 -
Mickey666 said:In J_C's wiring diagram that shows twin brown to the light switch it would not be possible to identify the switched and permanently live. If this is a 'bad thing' (or even against wiring regs?) then why have twin-brown cable at all?
If it sticks, force it.
If it breaks, well it wasn't working right anyway.0 -
Mickey666 said:Risteard said:grumbler said:Generally, you don't need any sleeves unless too much insulation was removed and you want to cover exposed copper. In this case IMO it's better to use brown.
This is not correct. Sleeving is not rated as insulation. Furthermore, it is a requirement of the Wiring Regulations that line (phase) conductors be correctly identified by colour, which for a single phase circuit must be brown (previously red). In this country we use twin brown for switch drops (and previously twin red). It's a poor practice in my opinion how England uses brown and blue for these.Where is 'this country'?I'm guessing not England because I've never lived in a house in England that had twin brown or red cables for switch drops.Sounds like a good idea though, so why is it so rare in England? Perhaps because sleeving is permitted, meaning that fewer types of cable need to be stocked?
Ireland.
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Tag the switch wire with a bit of insulating tape, I tend to use red
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Ectophile said:Mickey666 said:In J_C's wiring diagram that shows twin brown to the light switch it would not be possible to identify the switched and permanently live. If this is a 'bad thing' (or even against wiring regs?) then why have twin-brown cable at all?0
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