Hi, Does anyone know if super tariff is the same as economy 7 ? I have been asked to install an electric shower, customer showed me two consumer units, supplied from 1 meter. In economy 7 instalations I have seen before i CU is for heaters and water heating off the economy 7 meter and the other CU supplies ringmains etc. In this instalation both boards have ways marked up supplying heaters and a water heater. Also is it possible to fit an RCBO to a hager CU CAt ref is ICO58-01 and mcb marked MT132 = 32A.