Electricians Test Equipment - All About Electrical Testing Safety
A basic principle behind the philosophy of electrical safety is that in the event of a single abnormal external condition arising, or in case of failure of protection against a hazard; no safety issue should arise. Such conditions are called single fault conditions. They include such situations as the interruption of the protective earth conductor or failure of basic insulation of temperature limiting devices. Many electrical safety tests are carried out under various single fault conditions in order to verify...
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