#774267
What alphabetic and colour designation must have conductors protective earthing in electrical installations?
Варианты ответа:
  • Letter РЕN and blue color along the entire length
  • Letter designation and color PE designation alternating longitudinal or transverse stripes of equal width (for tyres from 15 to 100 mm) yellow and green colors
  • Letter of the PEN, color, blue color throughout the length and yellow-green stripes at the ends
  • Marking the letter N and blue color
Тематика: Основы безопасности жизнедеятельности Основы безопасности жизнедеятельности (ОБЖ) Основы электробезопасности
Курсы в категории: Безопасность и правопорядок
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