Most circuits within a modern electrical installation are protected by an RCD or Residual Current Device. RCDs offer protection against electrical faults and electric shock. However, as electrical installations and connected appliances become more complicated, this places additional requirements on the designer to ensure the RCDs are matched and offer the correct levels of protection. In this free accredited CPD training module, we explore using RCDs as defined in BS7671 UK wiring regulations.
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00:00 Introduction to RCDs
01;20 What protection do RCDs provide?
03:40 How do RCDs work?
08:40 DC leakage currents & non-linear electrical loads
12:30 Different types of RCD
13:00 Type AC - RCD
14:10 Type A - RCD
15:30 Type F - RCD
17:10 Type B - RCD
18:40 Installing the correct type of RCD
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