总掣 meaning in English

main switch

Double pole main switch not installed for single phase installation
单相装置并无安装双极总掣。
Turn off the main power of your television before you go out or sleep
外出和睡觉之前，关掉电视机的总掣
Two serious accidents occurred in recent months , both involving short - circuiting of live parts on low voltage electrical installations . in each case , the registered electrical workers ( rews ) did switch off the mains and essential supplies at the consumer s switchboard in order to carry out periodic maintenance inspection . however , they did not isolate the electricity supply from the power company
在这两宗个案中，注册电业工程人员在进行定期检查时，并未联络电力公司切断来电电源，而祗是将用户开关掣板的总掣及后备电源关掉，所以这些电掣的来电方向，仍然是带电。