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seen a white cable labelled up low smoke and fume harmonised, whilst most grey cables have no such description at all...

cant seem to find any white triple and earth, but found a supplier selling grey labelled up as smoke....this ok?

thanks all, i'm not doing the wiring myself, i'd probably electrocute myself! i have someone qualified coming in to do it, its just that i couldnt get hold of him today and had cracked open the packaging and was looking over the instructions.... which with my limited knowledge was probably a...

i accept what you say, but.... if the cpc is not being used at all within the creation of the circuit, ie. twin and earth to connecting block, but the earth never passes the connecting block, the same on each subsequent interconnection. the only continuing wires are live, neutral and...

so given that it states that the alarms are double insulated and do not require earthing, why include an earth wire in the cabling used at all? what is it protecting? the set up is a 1 way non returning circuit with an interconnect running from 1st unit to 2nd then from 2nd to 3rd etc...

during initial installation, from consumer unit right through to the end of the circuit, is there any need for an earth wire at all? as i've got twin and earth that I can use from consumer unit to the first alarm, but i also have three core n/l/e each sheathed in the cable which i'm looking to...