alarm and telephone cables

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hi,

can the above run alongside twin and earth cables and also, can they run under 300mm of Rockwool insulation?

thanks in advance.
 
Twin & earth, NO - at right angles to cross only, unless 6" or more apart.

Rockwool, yes, just don't put any cable joints under the 'wool, not a good idea to have to rummage around looking for them in years in the future, when you have forgotten where they are.
 
If it's only a couple of Mts then yes you can otherwise like the other reply only crossing over
 

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