socket in 1.5

[matt12321]

can u use 1.5mm cable feeding a single socket from the DB on a 16a breaker?

 

[NMc]

That the correct way to do it but how many sparks use the cable size that they allows have? i.e standard practice

 

[Rockingit]

To my mind, I can't really see a reason why not. If it's a dedicated circuit with little chance of it being changed afterwards, the tables allow a maximum of 19A down 1.5mm T&E subject to voltage loss. I'd probably want to see a smaller breaker though, maybe even a 3A (if you can find one) as a security camera is only likely to be using a few milliwatts.

 

[Mr.Ian]

Nobody can guarantee that the dvr will not be moved and say a heater or kettle be used later on the socket, markers on the socket can come off, socket could be changed to twin or supply/feed tapped into, in which case it'll either get overloaded or just have to be upgraded to 2.5mm. Why go any less than 2.5mm ? I know you say 1.5mm is fine but that's as it is now supplying a minimal load.

 

[Rockingit]

We can't infintely future proof!! At some point in the future a manufacturer might make a 15kW shower and it might end up in the same place as the 10kW one we're fitting now, so therefore let's wire it in 16mm.

Get my point??

The OP obviously has a reason for asking the question, knowing that the convention would be to use 2.5mm, so there are clearly other circumstances at work.

If it's fitted on an FS outlet plate rather than a plug (which would be better for a camera anyway), marked as a special circuit and on an appropriate size of breaker then it's OK by the BGB.

If it needs to be changed in the future, then that's the futures problem and a days work for another sparky.

 

[vernam616]

Such a simple question has turned into a 4 page debate

Im confused as to why people are asking what load is going to be on it and designating it by label etc....

Without doing the calcs the maximum load permissable through a 1.5mm is 19A, so wire it in 1.5mm, regardless of what you plug in to it, DVR or no DVR, kettle or toaster, by fitting a 16a mcb, overload protection will kick in after 16a to protect the cable, i dont see why people have "foggied" the question ?

 

[Rockingit]

I dont see why people have "foggied" the question ?

Because like sheep we follow.

 

[Deleted member 26818]

Such a simple question has turned into a 4 page debate

Im confused as to why people are asking what load is going to be on it and designating it by label etc....

Without doing the calcs the maximum load permissable through a 1.5mm is 19A, so wire it in 1.5mm, regardless of what you plug in to it, DVR or no DVR, kettle or toaster, by fitting a 16a mcb, overload protection will kick in after 16a to protect the cable, i dont see why people have "foggied" the question ?

In fact the maximum current carrying-capacity of 1.5mm² T&E is 20A, when clipped direct.
In conduit, it is 14.5A if the conduit is installed in thermal insulation.
I'm assuming that the conduit is not going to be installed in thermal insulation.

 

[Rockingit]

Baa! Baa!

 

[Deleted member 26818]

Baa! Baa!

Are you implying that I'm a sheep, or confirming that you are?

 

[Adam W]

Because like sheep we follow.

I agree.

 

[Rockingit]

Are you implying that I'm a sheep, or confirming that you are?

lol - both of us!!

 

[Deleted member 26818]

lol - both of us!!

I see myself as more an old goat than a sheep.

 

[Mr.Ian]

Such a simple question has turned into a 4 page debate

Im confused as to why people are asking what load is going to be on it and designating it by label etc....

Without doing the calcs the maximum load permissable through a 1.5mm is 19A, so wire it in 1.5mm, regardless of what you plug in to it, DVR or no DVR, kettle or toaster, by fitting a 16a mcb, overload protection will kick in after 16a to protect the cable, i dont see why people have "foggied" the question ?

I must admit to have typed my initial reply without thinking of just answering to the actual threads initial question, I just thought what was the point in using 1.5mm when the norm every day thought would be to run a 2.5mm, it would feel strange to me to connect up a wall socket with what I class as lighting cable, but then as you point out 1.5mm will handle approaching 19A and protection at 16a would protect it, but to me it'd look wrong !!!!! LOL

 

[SPARTYKUS]

In free air on cable tray better than clipped direct. Even more Amps! Maybe 1mm is ok!!!!

 

[Richard Burns]

Tut Tut not allowed! minimum CSa for sockets is 1.5mm, bad boy!