One of the mysteries of the English language finally explained.
A current-activated circuit-breaker used as a safety device for mains-operated electrical tools and appliances.
circuit breaker, trip switchView synonyms
- ‘The regulations require that a residual current device installed at a workplace shall be kept in a safe working condition and tested on a regular basis by a competent person to ensure its continued effective operation.’
- ‘Fit a residual current device, RCDs can reduce the risk of electrocution by cutting the power supply if an electrical tool malfunctions or a cable is cut.’
- ‘The purpose of the residual current device is to monitor the residual current and to switch off the circuit quickly if it rises to a preset level.’
- ‘He said the warning to immediately install the safety switch or residual current device came after the electrocution of a young mother and her child this month.’
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