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Все вопросы
- What is the frequency of inspection of protective equipment used in electrical installations? #341
- Are classified as premises in respect of danger of defeat of people by an electric current? #342
- How neutral should work in electric network with voltage of 10 kV? #343
- What the staff refers to administrative and technical? #344
- What are the age limits for assignment of III group of electrical safety? #345
- Who is eligible to serve electrical installations up to 1000 V? #346
- Which must conform to the date of verification of a current transformer built into the power equipment? #347
- In some circuits is the voltage measurement? #348
- When are the extraordinary resistance measurements of lightning-protection devices? #349
- What color should be painted openly laid the ground conductors? #350