Under Sink Hot Water (IWH) - Connecting to fuse board...

[Wayne Brian Pearsall]

I've got sparks coming tomorrow...  But he agrees with Dave given rest of property is 20yrs or so electrical.  A second consumer unit for iwh otherwise it'll likely be a complete rewire for current regs.  I'll come back when he's given a quote. Sadly mates aren't available any time soon so...  Ideally get this sorted sooner rather than later.

But as said above better safe than sorry. Luckily I can return purchases for refund (minus a couple of opened back boxes / switch / iwh's) if they want to use own material. 

 

[steptoe]

That makes no sense.  A CU can accommodate a fixed number of circuit breakers, there is no such thing as large spaces and small spaces.

Can you post a picture of your consumer unit? you might have to make two more posts on the forum if the restriction of no attachments until you have made 10 posts still stands.

Sounds like an old wylex with half gaps between main switch and RCDs,  

 

[SLIPSHOD & SLAPDASH]

That makes no sense.  A CU can accommodate a fixed number of circuit breakers, there is no such thing as large spaces and small spaces

Wylex still do half width &  full blanks