Quality, health and safety experts, Bureau Veritas, have warned that an increasing number of AC-type residual current devices (RCDs) are being affected by direct currents (DC) from modern electronic devices, electric appliances, and renewable energy sources. 

 

The previous (17th Edition) Wiring regulations said that AC-type RCDs should be used for sockets that might supply outdoor equipment. However, with increasing number of domestic, commercial and industrial sites now installing renewable energy sources such as solar panels, Bureau Veritas says that these RCDs might not be fit for purpose.