We currently have a 60cm gas hob. Mrs 4L has taken a fancy for an electric hob, preferably induction but failing that ceramic. The problem is there are drawers directly below.
I’ve been browsing the web and all the hobs I’ve seen so far need a clear 20mm+ space below the hob and a 5mm vent at the front.
Yes that is about right, they do require good ventilation in order to keep the fans running. Issues arise if these installation instructions are not adhered to and if the hob fails the manufacturers will decline to repair.
Attached is the Bosch induction drawing which is pretty much typical of most manufacturers. Also bear in mind induction hobs have a heavier connected load so make sure you have an an ample power outlet.