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I believe MICC has a higher ccc so 1.5 on 15A would be fine
Discuss Cable rating in the UK Electrical Forum area at ElectriciansForums.net
In the 'good old days' it was not uncommon for volt drop not to be checked at the design stage so MICC could well be a size or so below the equivalent plastic/rubber insulated cable and fine for CCC due to its much higher safe operating temperature, but you then had a magnificent MICC installation and the lights would dim when ever some bit of equipment was started!I believe MICC has a higher ccc so 1.5 on 15A would be fine
Apologies for my ignorance but what is MICC? If it is a typIn the 'good old days' it was not uncommon for volt drop not to be checked at the design stage so MICC could well be a size or so below the equivalent plastic/rubber insulated cable and fine for CCC due to its much higher safe operating temperature, but you then had a magnificent MICC installation and the lights would dim when ever some bit of equipment was started!
On the positive side MICC will generally last forever unless seriously damaged!
I just googled MICC and it doesnt look like my cable which looks like bog std 1.5mm flat twin and earth.Thank you all for your very helpful and knowledgeable responses. Apologies for my ignorance, but what is MICC and how would I tell if I had MICC? It sounds as though, if I do have MICC then 1.5mm should be OK for the 3.4kw heater. Is that correct?
The flexi is definitely 2.5 but do you think the black and red cores look like 2.5 too?That’s look like 2.5 to me
Problem solved if it is!Looks like 2.5 from the picture
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