Alarm power cabling

[dtokez]

Hi all,

Just got the the stage where I need to feed the cables into my alarm back box. I have put a switched spur right under the unit.

What size cable do I have to use to run into the alarm? 2.5mm seems a bit overkill seems as the current will be tiny?

Thanks

 

[Boilerman2]

1st mistake is your spur - it should not include a switch it should be a fused outlet only

0.75mm 3 core flex will do fine for the final connection to the end station

 

[dtokez]

Hi, thanks I did think that about the spur, I'll change it for a non switched one. Although the consumer unit is mounted directly below it and one of the breakers is labelled 'security system' lol. Would an installer leave it like that?

 

[oasistechnical]

electrical regs come into this now, not alarm regs!!


ALSO: be aware that your mains board has got mains in it, SWITCH OFF BEFORE MAKING OR BREAKING AND CONNECTIONS WITHIN

and the usual one is;
As you are `adding ` circuit` it needs to be done by a PART P contractor
(i know its a pain but you have to be informed of this, if you don't want to have ana electrical contractor do it, thats your choice )

the spur, irrespective of what the device is feeding must be wired in 2.5 cable from the distribution board.
labeling the distribution board is required for identification of circuits

1.0mm cable to the alarm system fused at 3 amp in the spur
yes some people use .75 3 core but we never do!

Oasis

 

[dtokez]

Thanks for the reply - not quite sure what you mean by this though? -

and the usual one is;
As you are `adding ` circuit` it needs to be done by a PART P contractor
(i know its a pain but you have to be informed of this, if you don't want to have ana electrical contractor do it, thats your choice )

The sparkie added the spur, I'm just going to swap it for a non-switched one?

Thanks for the cable advise, I will bear that in mind

 

[oasistechnical]

Ah, so you already have a spur (switched)
then just change it to an un switched.

i should really read and re read you original post
Sorry!!!

Oasis