Ok, from the figures above it appears I have 10mm cable.
Yes, pull cord in the bathroom to switch on/off shower, box on wall outside bathroom with large red switch and light to isolate shower. It's an old MOD house if that makes any difference!
Advice sought please!
1. My current 8.5kw shower needs replacing. Fisrtly I am considering whether to opt for a bath/shower mixer unit instead or a more powerful electric unit (eg.10.5kw) ?
For the replacement electric shower:
2. The current cable looks very thick but there is nothing...