Hi,
Just checked the cable into electric shower from mains to see whether 6mm or 10mm in order to upgrade the old shower unit. The cable is, I believe '10mm T+E', but it is black/red not brown/blue. Also the grey outer sleeving is nearer to 15mm wide (sounds silly but is this classed as 10mm?)
Is this existing cable still ok to use?
Regards,
Colin.