#774396

#774396: In what electroinstallations it is possible to use control lamps as voltage indicators?

In what electroinstallations it is possible to use control lamps as voltage indicators?
Варианты ответа:
  • In the electrical voltage not exceeding 380 V
  • In the electrical voltage not exceeding 220 V
  • In the electrical voltage not exceeding 1000 V
  • the Use of warning lights is prohibited

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Тематика: Основы безопасности жизнедеятельности Основы безопасности жизнедеятельности (ОБЖ) Основы электробезопасности
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