Understand Design and Installation Practices and Procedures (use On Site Guide BS7671:2018 Amendment 2:2022)

identify the appropriate document that details the specific dimensions of a specified type of lighting fitting
1. layout drawing
2. manufacturers data
3. installation specifications
4. circuit diagram
identify the non-statutory act/regulation from this list
1. BS7671
2. EaW
3. Hasaw
4. EPA
identify the appropriate method for a site supervisor on a busy worksite to determine who is on/off site at any time, should an emergency occur
1. use of a signing-in/out book at reception
2. only allow designated staff on site at particular times
3. use of identify badges on site to be worn at all times
4. carry out a head-count at regular times during the day
select the appropriate method to identify any damage to building fabric prior to undertaking electrical work in the building.
1. carry out a survey prior to starting work
2. carry out a survey after the electrical work has been completed
3. ensure any details of the damage are recorded prior to starting work
4. consult the layout drawing for specific information
identify the preferred method to protect soft furnishings from dust during electrical installation work such as drilling into the building fabric
1. use dustsheets to cover the furnishings
2. use of water spray to keep dust levels down
3. removal of all soft furnishings prior to starting work
4. use a vacuum cleaner when drilling work has ceased
identify the appropriate enclosure/fixing to be used with un-sheathed, pvc insulated single-core conductors
1. pvc trunking
2. stainless steel cable basket
3. pvc capping
4. steel cable tray
identify the appropriate installation method for a SWA multicore cable installation
1. in pvc trunking
2. in stainless steel cable basket
3. in steel conduit
4. on steel cable tray
identify the appropriate cable type for a 230v AC portable domestic appliance
1. flexible cable
2. MICC cable
3. SWA
4. pvc/pvc 'flat' cable
identify the appropriate cable type for a portable 110v AC 'site' transformer
1. pvc insulated flexible cable
2. arctic flex
3. SWA
4. pvc/pvc 'flat' cable
identify the main advantage of SWA cable over pvc flexible cables
1. greater mechanical properties
2. cheaper in price
3. no specialist tools are required
4. greater flexibility
how can long runs of pvc conduit be installed to reduce the prospect of distorting and buckling due to large changes in ambient temperature.
1. use expansion couplers
2. regular through-boxes are used throughout the run
3. greater distances between saddles
4. pvc conduit must not be installed in these environments
identify the cable system that is 'hygroscopic'
1. MIMS
2. PILC
3. CAT6
4. FP200
identify the tool used to determine if an accessory is horizontally level
1. spirit level
2. plumb line
3. chalk line
4. gps
identify the tool used to determine if a conduit run is vertical
1. spirit level
2. plumb line
3. chalk line
4. gps
identify the tool used to mark-up a vertical run for a trunking installation
1. spirit level
2. plumb line
3. chalk line
4. g.p.s system
identify the minimum depth that a buried cable should be installed without the need for additional mechanical protection
1. 50mm
2. 25mm
3. 100mm
4. 10mm
Buried cables should run in prescribed zones in walls. Identify the minimum distance from the ceiling downwards that would be deemed to be a 'safe zone' on a wall
1. 50mm
2. 150mm
3. 200mm
4. 300mm
identify the rating of an RCD used for additional protection for buried cables in walls.
1. 20mA
2. 30mA
3. 100mA
4. 13A
if an overcurrent occurs in an otherwise healthy circuit, this would be called ........
1. a short circuit
2. an overload
3. an open circuit
4. an earth fault
identify the device that operates using only the 'thermal' effect.
1. BSEN 61009
2. RCD
3. BS88-2
4. BSEN 60898
identify the device that operates using the 'current-balance' effect.
1. BSEN 61009
2. RCD
3. BS88-2
4. BSEN 60898
if a fault occurs downstream in a poorly designed circuit with poor protective device discrimination, the likely result would be....
1. only the protective device closest the fault would operate
2. only the correct protective device would operate
3. only the highest rated device would operate
4. the incorrect protective device could operate
when applying DIVERSITY to a lighting circuit in a small hotel, identify the percentage of total current demand allowed
1. 66%
2. 90%
3. 75%
4. 100% (full load)
when applying DIVERSITY to a water heater in a small shop, identify the percentage of total current demand allowed if the heater is thermostatically controlled
1. 66%
2. 90%
3. 75%
4. not allowed
when applying DIVERSITY to discharge lighting (such as fluorescent lamps), identify the multiplication factor that should be applied to the lamp wattage
1. 10
2. 5.5
3. 2
4. 1.8
identify the rated short-circuit capacity of a BS88-3 (type I) device as detailed in the On Site guide
1. 16.5kA
2. 16kA
3. 31.5kA
4. 33kA
identify the rated short-circuit capacity of a BS88-6 device at 240v, as detailed in the On Site guide
1. 16.5kA
2. 16kA
3. 31.5kA
4. 33kA
identify the rated short-circuit capacity of a BS88-6 device at 415v, as detailed in the On Site guide
1. 80kA
2. 16.5kA
3. 31.5kA
4. 33kA
identify the type of emergency light fitting the remains lit continuously
1. maintained
2. non maintained
3. sustained
4. contained
identify the type of emergency light fitting that only illuminates during a mains power failure
1. maintained
2. non maintained
3. sustained
4. contained
identify the device that gives 'no-volts' protection for rotating machines
1. DOL
2. fuse
3. circuit breaker
4. RCD
identify the maximum 'measured' Zs value allowed for a type B 16A circuit breaker to BSEN60898, as detailed in the On Site guide
1. 1.58 ohms
2. 2.2 ohms
3. 3.5 ohms
4. 1.09 ohms
identify the maximum 'measured' Zs value allowed for a type D 40A circuit breaker to BSEN60898, with a 5 second disconnection time, as detailed in the On Site guide
1. 0.88 ohms
2. 0.44 ohms
3. 3.5 ohms
4. 1.09 ohms
identify the maximum spacing for the supports for a 3000mmsq steel cable trunking when installed in a vertical position
1. 3 metres
2. 0.75 metres
3. 2 metres
4. 1.25 metres
identify the maximum spacing for the supports for a 1500mmsq pvc cable trunking when installed in a horizontal position
1. 0.5 metres
2. 1.75 metres
3. 3 metres
4. 1.25 metres
identify the maximum spacing for the supports for a 63mm diameter pvc conduit when installed in a horizontal position
1. 2 metres
2. 1.75 metres
3. 2.25 metres
4. 1.25 metres
identify the minimum height that a bare overhead lined on insulators (without intermediate support) should be installed at when passing across a roadway
1. 3 metres
2. 5.8 metres
3. 6 metres
4. 5.2 metres
determine the minimum conduit size to accommodate 2x 2.5 mmsq and 7x 10 mmsq, stranded copper conductors in a 2 metre straight conduit run
1. 38mm conduit
2. 20mm conduit
3. 25mm conduit
4. 32mm conduit
determine the minimum conduit size to accommodate 3x 2.5 mmsq and 3x 6 mmsq, stranded copper conductors in a 3.5 metre conduit run incorporating one bend
1. 16mm conduit
2. 20mm conduit
3. 32mm conduit
4. 25mm conduit
how many 6 mmsq PVC insulated, stranded copper cables can be safely accommodated in a 100mm x 25mm trunking
1. 63
2. 47
3. 50
4. 55
a 100mm x 50mm trunking already accommodates 16x 25 mmsq PVC (BS6004) insulated, stranded copper conductors. How many more 10 mmsq conductors of the same type could be safely accommodated
1. 30
2. 26
3. 33
4. 24
Identify the maximum spacing of supports requirement for a SWA cable, in a horizontal position, with a diameter of exactly 20mm
1. 550mm
2. 400mm
3. 450mm
4. 500mm
Identify the maximum spacing of supports requirement for a MI cable, in a vertical position, with a diameter of exactly 10mm
1. 900mm
2. 1.2m
3. 600mm
4. 2000mm
Identify the maximum spacing of supports requirement for a non-armoured, PVC insulated and sheathed cable, in a vertical position, with a diameter of exactly 20mm
1. 900mm
2. 0.45m
3. 250mm
4. 400mm
Identify the maximum spacing of supports requirement for a PVC conduit, in a vertical position, with a diameter of exactly 25mm
1. 2m
2. 1.75m
3. 0.5m
4. 1m
Identify the maximum spacing of supports requirement for a steel conduit, in a vertical position, with a diameter of exactly 40mm
1. 2m
2. 2.25m
3. 2.5m
4. 1m
Identify the maximum spacing of supports requirement for a steel trunking, in a horizontal position, with an area of 2500mm sq.
1. 3m
2. 1.75m
3. 1.25m
4. 1m
Identify the maximum spacing of supports requirement for a PVC trunking, in a vertical position, with an area of 1000mm sq.
1. 3000mm
2. 500mm
3. 1.25m
4. 1m
Identify the factor for a 2.5mmsq stranded conductor to be installed in a short, straight length of conduit
1. 31
2. 43
3. 30
4. 45
Identify the factor for a 6 mmsq stranded conductor to be installed in a 5-metre straight length of conduit
1. 88
2. 58
3. 30
4. 45
Identify the factor for a PVC insulated 6 mmsq stranded conductor to be installed in a trunking
1. 22.9
2. 21.2
3. 30.3
4. 45.4
Identify the factor for a trunking measuring 200mm x 38mm trunking
1. 1542
2. 3082
3. 3474
4. 1146
Identify the factor for a trunking measuring 300mm x 38mm trunking
1. 1542
2. 4648
3. 3474
4. 1146
Identify the factor for a 3.5 metre long conduit that is 25mm diameter and has one bend
1. 818
2. 475
3. 463
4. 521
Identify the minimum disconnection time for a 'time delayed' Type 'S' general purpose RCCB to BSEN 61008
1. 130mS
2. 500mS
3. 300mS
4. 200mS
Identify the maximum disconnection time for a 'time delayed' Type 'S' general purpose RCCB to BSEN 61008
1. 500mS
2. 130mS
3. 300mS
4. 200mS
Identify the time period for which an RCD should have its operation checked regularly by using the built-in test button
1. 6-monthly
2. quarterly
3. monthly
4. annually
Identity the item of equipment not considered to form part of a PEI (Prosumer electrical Installation)
1. uninterruptable power supply
2. wind turbine
3. battery
4. load shedding equipment
Storage unit operating modes for prosumer Electrical Installations (PEI) exclude which one of the following modes
1. reduce loading for the consumer
2. be charged by the public network
3. be charged by local power supplies
4. supply current-using equipment
Identify the PEI equipment than can be considered as both a load and a generator
1. battery
2. motor
3. UPS
4. turbine
Identify the item of EEMS equipment from this list
1. monitoring device
2. heating system
3. local generator
4. distribution panel
Identify the type of SPD to be used near terminal equipment in a circuit
1. type 3
2. type 2
3. type 1
4. type 0
Identify the type of SPD to be used at a distribution board
1. type 2
2. type 3
3. type 1
4. type 0
Identify the maximum recommended length of the tails for a type 1 SPD installed at the origin of an installation
1. 1 metre
2. 0.5 metre
3. 2 metres
4. 2.25 metres
Identify the recommended length of the tails for a type 1 SPD installed at the origin of an installation
1. less than 0.5 metre
2. less than 1 metre
3. less than 2 metres
4. less than 2.25 metres
Identify the minimum c.s.a for the conductors used to connect a type 1 SPD at the origin of an installation
1. 16 mm sq
2. 6 mm sq
3. 10 mm sq
4. 4 mm sq
Identify the minimum c.s.a for the conductors used to connect a type 2 SPD at the origin of an installation
1. 6 mm sq
2. 16 mm sq
3. 10 mm sq
4. 4 mm sq
Arc Fault Protection Devices (AFDD) are required to be installed to protect socket outlet circuits in all but one of the following locations
1. outdoor locations
2. higher risk residential buildings
3. houses of multiple occupancy
4. care homes
Arc Fault Protection Devices (AFDD) are required to be installed to protect socket outlet circuits in residential buildings with a top storey height of at least
1. 18 metres or more
2. 10 metres or more
3. 26 metres or more
4. 7 metres or more

Understand Design and Installation Practices and Procedures (use On Site Guide BS7671:2018 Amendment 2:2022)

Understand design and installation practices and procedures - 30 questions from a bank of questions. Use ONLY the On-Site Guide (Amendment 2:2022)