dual tariff consumer

[learner123]

Hi all.
Does anyone know if you can get a dual tariff consumer unit, yet still have twin RCD for 17th edition.

One main switch for the house supply (RCD ect).
Second main switch for economy 7 water/heating.

I found an old post i made in 2007 but now it is 17th edition thats out of date.



Many thanks in advance.

 

[Steve]

You can have two mainswitches and RCBOs.

Or two mainswitches and four RCDs. (two level board)

Considering the cost of RCDs / RCBOs, would it be cheaper (and less hassle should there be a minor fault / nuisance trip), to examine and rectify anything on the heating circuits that would cause it to have to be RCD protected? Thus negating the requirements for RCD protection.

 

[Spark123]

It may be cost prohibitive if it has unprotected concealled cables <50mm from the surface.