Bootstrap Quiz

What needs to be verified during the inspection of a new installation?

What process involves checking if an installation has deteriorated?

What document must be issued following the installation of a new cooker circuit to an existing installation?

What circumstance would require an Electrical Installation Condition Report to be issued?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

What document must be completed following inspection and testing?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

Which non-statutory document directly relates to the process of inspection and testing?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

What document must the Inspector use to record the new lighting circuit reference method?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

What would be the most appropriate human sense to use when inspecting the IP rating of the new lights?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

What is the minimum IP rating required for the new lights?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

What would be the most appropriate action to take if the new lights do not comply with the minimum IP rating?

Questions 5 to 11 relate to the following scenario.

Refurbishment of a leisure centre with a swimming pool is taking place. An additional lighting circuit is to be installed. The new lights will be at a height of 2.4m above the pool.

Which test must be carried out before earth fault loop impedance to ensure the installation is safe to energise?

Questions 12 to 16 relate to the following scenario.

The existing installation in a hotel is to be inspected and tested as a requirement of the local authority for a public entertainment licence application. Previous inspection and testing records exist but two additional socket-outlet circuits have previously been installed for which there are no test results available.

Where must the Extent and Limitations of inspection and testing be recorded?

Questions 12 to 16 relate to the following scenario.

The existing installation in a hotel is to be inspected and tested as a requirement of the local authority for a public entertainment licence application. Previous inspection and testing records exist but two additional socket-outlet circuits have previously been installed for which there are no test results available.

Who will be involved in setting the sampling size for this installation?

Questions 12 to 16 relate to the following scenario.

The existing installation in a hotel is to be inspected and tested as a requirement of the local authority for a public entertainment licence application. Previous inspection and testing records exist but two additional socket-outlet circuits have previously been installed for which there are no test results available.

What action should be taken with regard to the additional socket-outlet circuits?

Questions 12 to 16 relate to the following scenario.

The existing installation in a hotel is to be inspected and tested as a requirement of the local authority for a public entertainment licence application. Previous inspection and testing records exist but two additional socket-outlet circuits have previously been installed for which there are no test results available.

Which test can be carried out without the use of GS38 compliant test leads?

Questions 12 to 16 relate to the following scenario.

The existing installation in a hotel is to be inspected and tested as a requirement of the local authority for a public entertainment licence application. Previous inspection and testing records exist but two additional socket-outlet circuits have previously been installed for which there are no test results available.

Which test may be unnecessary on any existing ring-final circuits, for which previous test records are available?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long.

The installation has been safely isolated for this test. What is the purpose of carrying out this test?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long.

The installation has been safely isolated for this test. What instrument is to be used to carry out this test?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long. The installation has been safely isolated for this test.

Why must the installation remain safely isolated whilst this test is carried out?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long. The installation has been safely isolated for this test.

Which additional piece of test equipment will be required for this test?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long. The installation has been safely isolated for this test.

What is the only outcome that can be recorded on the Schedule of Inspections for this conductor?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long. The installation has been safely isolated for this test.

What is the expected measured conductor resistance value?

Questions 17 to 23 relate to the following scenario.

The continuity of a main protective bonding conductor to a gas installation pipe in a new primary school is to be tested. The 10 mm2 conductor is 43 m long. The installation has been safely isolated for this test.

Which risk to other persons must be managed when correctly undertaking this test?

Questions 24 to 28 relate to the following scenario.

Voltage drop of a single-phase circuit supplying a bread oven is to be verified as part of periodic inspection and testing within a bakery. The circuit has a measured R1+Rn value of 0.40 Ω and an Ib of 29.6 A. The circuit protective device has an In of 32 A.

The installation forms part of a public 400/230 V TN-S system.

What is the purpose of this test?

Questions 24 to 28 relate to the following scenario.

Voltage drop of a single-phase circuit supplying a bread oven is to be verified as part of periodic inspection and testing within a bakery. The circuit has a measured R1+Rn value of 0.40 Ω and an Ib of 29.6 A. The circuit protective device has an In of 32 A.

The installation forms part of a public 400/230 V TN-S system.

What instrument is used for part of this process?

Questions 24 to 28 relate to the following scenario.

Voltage drop of a single-phase circuit supplying a bread oven is to be verified as part of periodic inspection and testing within a bakery. The circuit has a measured R1+Rn value of 0.40 Ω and an Ib of 29.6 A. The circuit protective device has an In of 32 A.

The installation forms part of a public 400/230 V TN-S system.

What is the maximum percentage voltage drop allowed for this circuit?

Questions 24 to 28 relate to the following scenario.

Voltage drop of a single-phase circuit supplying a bread oven is to be verified as part of periodic inspection and testing within a bakery. The circuit has a measured R1+Rn value of 0.40 Ω and an Ib of 29.6 A. The circuit protective device has an In of 32 A.

The installation forms part of a public 400/230 V TN-S system.

What is the calculated value of voltage drop?

Questions 24 to 28 relate to the following scenario.

Voltage drop of a single-phase circuit supplying a bread oven is to be verified as part of periodic inspection and testing within a bakery. The circuit has a measured R1+Rn value of 0.40 Ω and an Ib of 29.6 A. The circuit protective device has an In of 32 A.

The installation forms part of a public 400/230 V TN-S system.

What is the most appropriate outcome based on the value of voltage drop?

Questions 29 to 33 relate to the following scenario.

The supply polarity of a restaurant is to be tested as part of a periodic inspection and test. The supply and installation form part of a 230 V single-phase TN-S system. Fault protection is provided by single-pole circuit breakers to BS EN 60898.

What would be the effect of reversed Line-Neutral supply polarity?

Questions 29 to 33 relate to the following scenario.

The supply polarity of a restaurant is to be tested as part of a periodic inspection and test. The supply and installation form part of a 230 V single-phase TN-S system. Fault protection is provided by single-pole circuit breakers to BS EN 60898.

What instrument is used to carry out this test?

Questions 29 to 33 relate to the following scenario.

The supply polarity of a restaurant is to be tested as part of a periodic inspection and test. The supply and installation form part of a 230 V single-phase TN-S system. Fault protection is provided by single-pole circuit breakers to BS EN 60898.

What instrument safety check must be made before carrying out this test?

Questions 29 to 33 relate to the following scenario.

The supply polarity of a restaurant is to be tested as part of a periodic inspection and test. The supply and installation form part of a 230 V single-phase TN-S system. Fault protection is provided by single-pole circuit breakers to BS EN 60898.

What voltages are to be expected if the polarity is correct?

Questions 29 to 33 relate to the following scenario.

The supply polarity of a restaurant is to be tested as part of a periodic inspection and test. The supply and installation form part of a 230 V single-phase TN-S system. Fault protection is provided by single-pole circuit breakers to BS EN 60898.

Why may the testing of circuit polarity be unnecessary?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

The catering unit is permanently sited and infrequently moved. What would this information help the inspector to determine?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

What needs to be verified with regard to the mobile catering consumer unit?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

What is the maximum test current applied to the RCD to confirm that fault protection is provided?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

What is the maximum operating time of the RCD, when tested using a test current equal to the residual current rating?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

The RCD is found to not operate at any test current. What is the most appropriate classification code to record?

Questions 34 to 39 relate to the following scenario.

Periodic inspection and testing of a mobile catering unit is to be carried out as a requirement of the client’s insurer. The supply is from a 3 kVA 230 V single-phase portable generator and is connected as a TN-S system with fault protection provided by a BS EN 61008 30 mA RCD.

What additional action must the inspector take regarding this observation?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What is the correct way to prepare one of these circuits for testing?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What affects the insulation resistance of each circuit tested?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What is the legal status of the inspector?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What condition can be detected during the insulation resistance test?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

The following test results were recorded. Calculate the total IR between Live and Earth for all circuits

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What is the test voltage applied during the insulation resistance test?

Questions 40 to 46 relate to the following scenario.

Insulation resistance has been tested on five new lighting circuits in an existing large distribution warehouse. These circuits are supplied from a new single-phase, five-way DB. Switching for each circuit is by 230 V contactors. Connection to each light is made using a BS 1363 socket-outlet adjacent to the fitting. The supply and installation form a 400 V three-phase TN-C-S system.

What would be the most appropriate action to take if the result for lighting circuit 1 is 0.95 MΩ between live conductors?

Questions 47 to 49 relate to the following scenario.

A section of galvanised trunking is to be inspected as part of periodic inspection and testing of a factory. The trunking contains unsheathed low voltage cables.

What is the minimum IP rating for the bottom horizontal surface of the trunking?

Questions 47 to 49 relate to the following scenario.

A section of galvanised trunking is to be inspected as part of periodic inspection and testing of a factory. The trunking contains unsheathed low voltage cables.

Which are the most appropriate human senses to check the security of the trunking lid?

Questions 47 to 49 relate to the following scenario.

A section of galvanised trunking is to be inspected as part of periodic inspection and testing of a factory. The trunking contains unsheathed low voltage cables.

What is the most likely reason for carrying out this periodic inspection?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

Which test would detect incorrect polarity of the Live conductors at each socket-outlet?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What is the expected measured r1 value?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What is the expected measured r2 value?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What pattern of test results is expected at each socket-outlet when the line and cpc conductors are correctly cross-connected?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What is the expected measured value at each socket-outlet when the line and neutral conductors are correctly cross-connected?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What is a simplified way to verify the r1 and r2 ratio for this circuit?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What column numbers would be completed on the Schedule of Test Results, detailing the results obtained during the ring-final circuit continuity test?

Questions 50 to 57 relate to the following scenario.

Continuity of a ring final circuit has been tested as part of an initial verification of a new primary school. All the socket-outlets are connected directly to the ring. The circuit loop length is 58 m long, wired in 4 mm2 live and 1.5 mm2 cpc flat profile cable. The circuit is protected by a 32 A BS EN 60898 Type B circuit breaker.

What is the expected value of Zs for this circuit if the Ze = 0.29 ohms?

The measured R1+R2 value for a radial cooker circuit, with a 6 mm2 line conductor and a 2.5 mm2 cpc, is 0.29 Ω. What is the length of this circuit?

Questions 59 and 60 relate to the following scenario.

An earth electrode resistance test has been carried out within a caravan park. The supply and installation form a 230 V single-phase TT system. The following results were obtained, as shown in Figure 1

What value is to be recorded as the earth electrode resistance?

Questions 59 and 60 relate to the following scenario.

An earth electrode resistance test has been carried out within a caravan park. The supply and installation form a 230 V single-phase TT system. The following results were obtained, as shown in Figure 1

What is the maximum rating of RCD that can be used for fault protection on this installation?