18 Edition Part 6 (a)

Upon completion of a new electrical installation after successful verification and testing has taken place, what must be issued?

• A. A minor works certificate

• B. A new installation certificate

• C. A periodic inspection certificate

• D. An electrical installation certificate

Answer explanation

Amendment 2 (Brown Book) Reference: Page 238, section 644.1

An insulation test on a circuit with a nominal voltage of 600 Volts will require the test instrument to deliver a test voltage of?

• 1000 V

• 250 V

• 500 V

• 600 V

Answer explanation

Amendment 2 (Brown Book) Reference: Page 234, table 64

Which one of these people signs a Minor Electrical Installation Works Certificate? Mark one answer

• Designer

• Inspector

• Person ordering the works

• Skilled competent persons

Answer explanation

Amendment 2 (Brown Book) Reference: Page 238, section 644.5

What method may be used to confirm the separation of a SELV circuit from other Circuits?

• By asking the manufacturer

• By calculation

• By enquiry

• By measurement

Answer explanation

Amendment 2 (Brown Book) Reference: Page 234, section 643.4.1

Who shall make an initial verification of a new installation? Mark one answer

• A. A skilled person

• B. The architect

• C. The designer

• D. The person ordering the work

Answer explanation

Amendment 2 (Brown Book) Reference: Page 231, section 641.6

If all of the following tests are required in a new electrical installation, which of the listed tests must be performed first before the installation is energised? Mark one answer

• Earth electrode resistance

• Insulation resistance

• Polarity

• Protection by SELV

Answer explanation

Amendment 2 (Brown Book) Reference: Page 233, section 643.1

With regards to initial verification and testing, the verification process shall include comparison of the results with the relevant criteria to confirm that the requirements of the regulations?

• Are no worse than the previous test results

• Are the same as the previous test results

• Have been met

• Have been recorded in the schedule or works results

Answer explanation

Amendment 2 (Brown Book) Reference: Page 232, section 641.3

An insulation test on a PELV circuit must have a minimum IR value of?

• 0.5 MΩ

• 0.5 mΩ

• 1.0 MΩ

• 1.5 MΩ

Answer explanation

Amendment 2 (Brown Book) Reference: Page 234, table 64

The frequency of periodic inspection and testing shall be determined by which of the following? Mark one answer

• The magnitude of the prospective short-circuit current

• The presence of harmonic distortion

• The type of installation and equipment

• Who designed the installation

Answer explanation

Amendment 2 (Brown Book) Reference: Page 239, section 652.1

What is the appropriate Insulation Resistance test voltage for a 400 v a.c. motor in an industrial installation?

• 1000 V a.c.

• 250 V a.c.

• 500 V a.c

• 500 V d.c.

Answer explanation

Amendment 2 (Brown Book) Reference: Page 234, table 64