The consumer unit needs to be accessible for operation and maintenance and therefore being located in a cupboard containing a hot water tank and immersion heater is not a great idea
Answered by Farrah, Electrical Safety Expert
The consumer unit needs to be accessible for operation and maintenance and therefore being located in a cupboard containing a hot water tank and immersion heater is not a great idea. The temperature in the cupboard also needs to be taken into consideration.
You should speak to a registered electrician who will be able to advise on the best place to locate the consumer unit. You can find one local to you by searching here.