Basic Electrical Installation Work 2365 Edition by Linsley Trevor

Basic Electrical Installation Work 2365 Edition by Linsley Trevor

Author:Linsley, Trevor
Language: eng
Format: epub
ISBN: 978-1-317-53555-3
Publisher: Taylor & Francis Ltd


Residual current protection by RCD

The IET Regulations recognize the particular problems created when electrical equipment such as lawnmowers, hedge-trimmers, drills and lights are used outside buildings. In these circumstances the availability of an adequate earth return path is a matter of chance. The regulations, therefore, require that any socket outlet with a rated current not exceeding 20 A, for use by ordinary people and intended for general use, shall have the additional protection of a residual current device (RCD) which has a rated operating current of not more than 30 milliamperes (mA) (IET Regulation 411.3.3).



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