Brian Gaff wrote

I've often wondered something about these hobs, do they have any inductive
effects, ie when switched off is there a pulse from the coil or whatever
it is?

No they don’t.

"Kevin H" wrote in message
...
New kitchen planning underway. Looks like we're going to replace a gas hob
with an induction hob requiring a 32A connection back to the CU (photo
he https://goo.gl/CGJfg3)

The CU is pretty old (1995 when the house was built). There is a spare
position but on the non-RCD protected side. I assume using this slot would
not be acceptable practice?

I've noticed that the current cooker is also on the non protected side of
the CU, and given there is a combined isolation switch/13A outlet next to
the cooker I was wondering if regardless of the need to add the induction
hob this alone should be a reason to update the CU, as that socket isn't
protected by the RCD? Ignore the water heater note - the immersion heater
is no longer connected.

A final question. Any reason not to use 10mm on the 10m run to the
kitchen? Hob and oven won't be sharing a circuit.