I only have 8 switches on my old style Wylex consumer unit (I replaced the wire fuses with MCB's some time ago). All 8 switches are in use but I need to connect a 10.5kw electric shower. The unit is very 'crowded' & leaves no room for 10mm cable to be added. Seven of the MCB's have 2 wires each going into them.
Can I install a 2nd smaller consumer unit instead of an RCD just for the shower? This product for example [url]
http://www.awin1.com/pclick.php?p=91884 ... 071&m=1228
If so. how would this connect to my primary consumer unit (would I still need to use the 10mm cable which I don't have room for)?
Thanks in advance