RCDs and the '17th edition'

摘要

RCDs in all their different forms have been around for many years. While professionals in the industry are aware of their capabilities, there is still much confusion surrounding the different terminology used, the types of RCDs available and knowing exactly where and how the technology should be installed. The 17th edition of the IEE Wiring Regulations requires electricians to consider the use of RCDs in a wider variety of new applications, than previous standards have demanded. The basic function of an RCD is to trip and disconnect the supply of electricity in the event of an earth fault. It does this by detecting the imbalance of currents between the line and neutral lines caused by a fault to earth. Drawing attention to the importance of using RCDs in the right context and with the right equipment, the IEE Wiring Regulations will provide guidance on how RCDs should be incorporated into new builds.