Inspection and testing of the low-voltage (mains) supply
The Electricity at Work Regulations requires that people who conduct these tests are competent under the terms of the Health and Safety at Work Act. This chapter provides students with instruction on how these tests are safely carried out and how to achieve competence.
This chapter discusses the need to visually inspect the installation and studies the methods of testing the low-voltage supply to the system, covering earth continuity, polarity, insulation and earth loop impedance. There are certain safety precautions to be observed and procedures for recording the test results using proprietary or commercial forms need to be followed.
8.1 Visual inspection and testing
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