My apologies for being tardy in replying...everyone! - and thanks for all your very welcome replies!
The shower is a Gainsborough 10.5 SDL - so I'm assuming that it's a 10.5kw shower.
From the responses you've given me, it looks as though the nsb32 mcb is too small for the 10.5kw load. Can...
Help!
A registered electrician fitted a new wylex consumer unit for me and everything works great - except...
The electric shower in the bathroom (which as a separate feed from the consumer unit - also connected by the same electrician) trips about 10 seconds after the shower is switched on...