Deck 4: Periodic Testing

Question 1

3 documents on which the value of PFC should be recorded are?

A) Minor works certificate, Schedule of inspections, Schedule of test results
B) Minor works certificate, condition report schedule of inspections, Condition report schedule of test results
C) Electrical installation certificate, Electrical installation condition report, Generic Schedule of test results
D) Condition report inspection schedule, Electrical installation inspection schedule, Generic schedule of test results

Answer 1

C

Question 2

Under which condition should a minor works certificate not be issued

A) Addition of a lighting point to an existing circuit
B) Replacement of a one way switch with a dimmer switch
C) Replacement of an existing socket outlet with an RCD protected socket
D) Replacement of a circuit breaker with an RCBO

Answer 2

D

Question 3

One statutory and two non statutory documents relating to the inspection and testing process for an electrical installation are?

A) GS 38, BS 7671 and GN3
B) EAWR 1989, HASWA 1974, GS 38
C) ESQCR 2002, EAWR 1989, BS7671
D) EAWR 1989, BS7671, GN3

Answer 3

D

Question 4

The human sense which would be most suitable for identifying an overloaded electric motor would be

A) Smell
B) Sight
C) Touch
D) Hearing

Question 5

A periodic inspection is to be carried out on the electrical installation in a shoe shop, what must be agreed with the client and recorded on the electrical installation condition report?

A) The cost of the work to be carried out
B) The duration of the work
C) Extent and limitations
D) Number of people carrying out the inspection

Question 6

Two methods which can be used to carry out continuity of circuit protective conductors which are not completely visible are

A) Method 1 (R1 + R2), and method 2 (long lead)
B) Visual inspection and long lead method
C) Method 1 and method 3
D) Visual and R1 + R2 method

Question 7

One consideration regarding test leads when carrying out a ring circuit test is

A) Leads comply with GS 38
B) The leads must be nulled or the resistance subtracted from the test result
C) Leads must be correctly coloured
D) They must be manufactured by the same company as the test instrument

Question 8

When conducting an earth fault loop impedance test on a final circuit

A) The leads must be nulled
B) The installation must be isolated and the earthing conductor disconnected
C) The earthing conductor must be disconnected and the installation energised
D) The earthing conductor must be connected and the circuit energised

Question 9

Three checks which must be carried out on an electrical installation before an installation resistance test is carried out on it are

A) Installation isolated, lamps removed, switches open
B) Lamps removed, installation energised and dimmers bypassed
C) Installation energised, all lamps in place and switches closed
D) Switches closed, installation isolated and lamps removed

Question 10

When carrying out a ring final circuit test the measured value of stages 2 and 3 are lower than the measured value of stage 1 because

A) The conductors are connected in parallel
B) The conductors are disconnected
C) The conductors are incorrectly connected
D) The cpc and the line conductors are the same size

Question 11

r2 is sometimes proportionally higher than r1 and rn because

A) It is longer
B) It has a larger cross sectional area
C) It has a smaller cross sectional area
D) It has been connected into the wrong terminal

Question 12

The best method of carrying out an insulation test on a circuit containing a dimmer switch which cannot be removed is to

A) Turn the switch off
B) Test between live conductors only
C) Carry out the test using a low resistance ohmmeter
D) Test between live conductors joined and earth

Question 13

IPXXB is the IP code for

A) A 12.5mm diameter hole
B) Standard finger protection
C) A 1mm diameter hole
D) Protection from ingress of dust

Question 14

When an IP code contains an X as the second number is means that

A) The hole must be completely blocked up
B) Nothing is specified for dust
C) Nothing is specified for liquids
D) It is waterproof

Question 15

When conducting a polarity test on a lighting circuit, it must be verified that

A) The switch is in the line conductor
B) The switch line is correctly identified
C) The switch is the right way up
D) The correct rating of protective device has been used

Question 16

Where a 300mA rcd to BS EN 61008 has been used for fire protection the following sequence of tests must be carried out to prove its correct operation

A) x1/2 x1 and x5
B) 150mA, 300mA and 1500mA
C) Operate the test button, 150mA and 300mA
D) 150mA, 300mA, operate the test button

Question 17

The maximum test current to be applied to a 100 mA rcd when it is being tested is

A) 0.1A
B) 0.01A
C) 500mA
D) 50mA

Question 18

The most suitable test instrument used to carry out a test on an earth electrode which is to be used for a generator is

A) An earth fault loop impedance tester
B) A high current tester
C) A low resistance ohmmeter
D) An earth electrode tester

Question 19

The recommended frequency for the inspection of privately owned domestic accommodation as given in GN3 is

A) 5 years
B) 10 years
C) 3 years
D) 7 years