#774284
What is the earthing system of the following refers to a system of TN-S?
Варианты ответа:
  • a System in which the power source midpoint wire is dully grounded, and open conductive parts of the installation connected to the earthed neutral of the source by means of protective conductors
  • System TN, in which one zero the defensive and zero worker explorers are parted in its entirety
  • System TN, in which one zero the defensive and zero worker explorers are mated in one Explorer on all its stretch
  • System TN, in which the functions of the zero protective and zero worker of conductors are mated in one Explorer in some of its parts, starting from the power source
Тематика: Основы безопасности жизнедеятельности Основы безопасности жизнедеятельности (ОБЖ) Основы электробезопасности
Курсы в категории: Безопасность и правопорядок
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