1.5mm2 cable for single socket?

[Alexnh]

Can I use 1.5mm cable to supply a single socket. Cable will run behind a plasterboard wall. Cable run will be about fifteen centimetres. Breaker is 20amp for the circuit. The intention is only to use to supply a low current device (home automation microprocessors).

 

[Mottie]

Wait for it......"But what if someone plugs a 3Kw heater into it".....

I'm no electrician but why not run two 1.5mm cables if that’s all you have?

 

[EFLImpudence]

1.5mm² can take 20A.

Yes, you can use it.

 

[johnny2007]

Go outside a screwfix/Toolstation and when you see an electrician van ask to buy a piece of 2.5mm2 cable.
Failing that, invest the grand sum of £9.99

https://www.toolstation.com/pitacs-twin-earth-cable-6242y-grey/p58713

 

[johnny2007]

1.5mm² can take 20A.

Yes, you can use it.

Really?
So why do they wire all sockets with 2.5mm?
Genuine question, i don't know.

 

[Alexnh]

Using 2x 1.5mm2 in parallel is discouraged I think. Due to the location in a boiler cupboard is unlikely that someone will try to run a heater. They'd have to walk past several more convenient sockets to access it.

 

[Alexnh]

Really?
So why do they wire all sockets with 2.5mm?
Genuine question, i don't know.

I think it's because a double socket would exceed the current rating. Rating is also less than 20a when concealed iirc.

 

[EFLImpudence]

Plus the MCB is usually 32A.

 

[JohnW2]

Wait for it......"But what if someone plugs a 3Kw heater into it".....

As has been said, 1.5mm² cable would be more than enough for a 3 kW heater.

Kind Regards, John

 

[JohnW2]

I think it's because a double socket would exceed the current rating.

That, in itself, is irrelevant - (the common situation of) half a dozen (or more) double sockets on a circuit wired with 2.5mm² cable would dramatically 'exceed the current rating of the cable' if all the sockets were fully loaded.

Kind Regards, John

 

[winston1]

Wait for it......"But what if someone plugs a 3Kw heater into it".....

or a 4 way splitter with 3 heaters in addition to the automation.

 

[RF Lighting]

or a 4 way splitter with 3 heaters in addition to the automation.

What is a 4 way splitter?

 

[winston1]

What is a 4 way splitter?

Your ignorance astounds me. Google is your friend.

 

[RF Lighting]

I have googled 4 way splitter as requested. How should I connect 3 heaters to any of these?

 

[johnny2007]

Extension lead maybe?
Just a wild guess, or maybe it's a technical electric device.