In the absence of any advice in the appliance manufacturer’s installation instructions, an electrical
fitting such as a socket outlet, switch, control unit etc. should be positioned to enable safe
operation and to avoid the harmful effects of heat and steam from cooking activities.
A standard electrical fitting, (which is not splash resistant), should not be located next to a sink or
drainer where it could be affected by splashing.
A minimum distance of 300mm, measured horizontally from an electrical fitting to the edge of a
high level grill, free standing cooker, individual hob, sink or drainer, is considered acceptable for
the purposes of avoiding adverse effects from using a cooker, sink or drainer.
NHBC technical Bulletin.