TLC Electrical Supplies

16th Edition (reference only) – NOW superseded by the 17th Edition IEE Regulations.

Earthing

	5.1 - The earthing principle	5.6 - Protective multiple earthing (PME)
	5.2 - Earthing Systems	5.7 - Earthed concentric wiring
	5.3 - Earth fault loop impedance	5.8 - Other protection methods
	5.4 - Protective conductors	5.9 - Residual current devices (RCDs)
	5.5 - Earth electrodes	5.10 - Combined functional and protective ---------earthing

5.9.1 - Why do we need residual current devices?

5.9.2 - The principle of the residual current device

5.9.3 - Regulations for residual current devices

5.9.4 - Fault voltage operated circuit breakers

These circuit breakers, commonly known in the trade as 'voltage ELCBs', were deleted from the 15th Edition of the Wiring Regulations in 1985, and should not be installed. It is advisable that installations where they are still in use should be carefully tested prior to a change to residual current device protection.

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Extracted from The Electricians Guide Fifth Edition
by John Whitfield

Published by EPA Press Click Here to order your Copy.

Click here for list of abbreviations