A Dual RCD Consumer Unit offers the most cost-effective solution to meet the current regulations by protecting the two banks of circuits from earth leakage through the use of two RCDs.

Despite the limitations of Dual RCD Consumer Units, they remain the most popular choice due to the budget-friendly cost.

It is important to ensure that the circuit design is correct, effective and safe for example, you should not have all of the lighting circuits on the same RCD as an earth leakage fault on one of those circuits will cut power to the entire bank, therefore, leaving your home with no lighting at all.