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Все вопросы
- What justification is considered valid? #1
- What is the frequency of inspection of protective equipment used in electrical installations? #2
- Are classified as premises in respect of danger of defeat of people by an electric current? #3
- How neutral should work in electric network with voltage of 10 kV? #4
- What the staff refers to administrative and technical? #5
- What are the age limits for assignment of III group of electrical safety? #6
- Who is eligible to serve electrical installations up to 1000 V? #7
- Which must conform to the date of verification of a current transformer built into the power equipment? #8
- In some circuits is the voltage measurement? #9
- When are the extraordinary resistance measurements of lightning-protection devices? #10