Thank you kindly for your replies.
I have no idea of the cable size, i'm a girl! (Not to dizzy tho!)
Having seen other info think i will get the cable changed to a 10mm that will do the job for all!!!
Ta Zanzs
I want to renew my electric trition 8.5kw shower with a mira 9.8kw. Please can anyone let me know if this is fine to do or do i need the cables changing etc. Thank you. Zanzs :?