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WorksheetsCables & Cords - All Questions
Total questions: 65
Worksheet time: 33mins
In accordance with which section of AS/NZS 3000 should cables be selected & installed?
Section 1
Section 2
Section 3
Section 4
State the reference in AS/NZS 3.3.2.2 that defines flexible cords.
1.4.30
1.4.26
1.4.32
1.4.36
What colours are used in NZ for Phase, Neutral & Earth conductors in single phase flexible leads?
They are all the same colour
Brown, Blue & Green/Yellow
Red, Black & Green
Brown, Blue and Green
Which of the following is not mentioned by AS/NZS 3000 3.3.2.2 for dealing with cables near external heat sources?
Shielding
Limiting the current in the cable to reduce operating temp.
Selecting a system that allows for temperature rise.
Wrapping the cable in Polystyrene.
Placing cables away from heat source.
Which enviromental condition explains a Cable situation that needs to be suitable to cope with moisture to prevent shock, fire or malfunction.
Flexing
Moisture, water, and other liquids
Mechanical damage
Vibration
Which enviromental condition explains a Cable situation where cable has been damaged by hitting, squashing, cutting, bending, or stretching?
Mechanical Damage
Vibration
High temperature
Weight or Strain
Which enviromental condition explains a Cable situation where selection is made in accordance with AS/NZS 3000 7.7, so that those cables can survive for longer in a fire?
High Temperature
Vibration
Solvents, chemicals, oil, or petrol
Hazardous areas and fire
Which enviromental condition explains a Cable situation where cables can cope with a littlebit of this - if it is excessive then flexible cable is used
Flexing
Mechanical damage
Weight or strain on a cable
Vibration
Which enviromental condition explains a Cable situation that requires cables to be able to deal with (AS/NZS 3000 3.3.2.7)?
High Temperature
Flexing
Mechanical Damage
Vibration
Which enviromental condition explains a Cable situation where Insulation on plastic and rubber insulated cables can melt and fail if they get too hot.
Moisture, water, and other liquids
High Temperature
Solvents, chemicals, oil, or petrol
Weather/UV radiation, marine environments. dust
Which enviromental condition explains a Cable situation that dissolves insulation and affects insulation resistance and cable structure?
Weight or strain on a cable
Moisture, water, and other liquids
Solvents, chemicals, oil, or petrol
High Temperature
Which enviromental condition explains a Cable situation where operation can occurs in driving rain and direct sunshine, or sea salt, or saw dust, grain or powder.
Weather/UV radiation, marine environments. dust
Solvents, chemicals, oil, or petrol
Moisture, water, and other liquids
Weight or strain on a cable
Which conductor has greater conductivity?
Copper
Aluminium
Which conductor is lighter and cheaper?
Copper
Aluminium
Which conductor is heavier and more expensive?
Copper
Aluminium
Which conductor has lower conductivity?
Copper
Aluminium
Which conductor is suited to general enviromental applications?
Copper
Aluminium
Which conductor is suited to aerial cables/power distribution applications?
Copper
Aluminium
Which conductor is best suited to domestic/commercial subcircuits or short mains runs?
Copper
Aluminium
Which conductor is best suited to long mains/submains runs?
Copper
Aluminium
Which conductor is cheaper than stranded conductors?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor is more flexible than solid conductors?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type allows for the production of bigger conductors?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type offers the best flexibility?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type is not very flexible and breaks easily?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type costs more than solid conductors?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type costs more than stranded conductors?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type is suitable for smaller fixed wiring applications like lighting?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type is suitable for general fixed wiring applications like power outlet circuits?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
Which conductor core type is suitable for general wiring applications prone to movement like cords to appliances/extension leads?
Solid Conductors
Stranded Conductors
Fine Stranded Conductors
What is a way that you could determine the size of a cable?
Check the markings on the drum.
Check the marking on the sheath.
Compare it to a known conductor for size.
Use a crimp lug or link, slip it over the cable to check the size.
All of the above.
Which sheathing type is the smallest but provides the least insulation and mechanical protection?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is larger but provides more insulation and mechanical protection?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is suitable for general fixed wiring but needs additional mechanical protection?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is suitable for general fixed wiring?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is stronger and mechanically protected than non-braided, but with a higher cost and larger size/weight?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is the strongest and most resilient, but with a high cost than the others?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is suitable for movement and flexibilty and rough mechanical treatment, like in an industrial factory ?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
Which sheathing type is suitable for rough mechanical treatment, where cable could be chased into rock or run in concrete ?
Unsheathed Cables
Sheathed Cables
Braided Sheath Flex Cables
Armoured Cables
What of thefollowing is the best requirement of cable insulation?
Stop current flow or leakage
Have high strength against insulation breakdown
Have protective strength against handling, impact and abrasion
All of them - all are equally important
What of the following is the best requirement of cable insulation?
retain properties in all expected temperatures
Not be damaged or degraded by chemicals
Keep moisture out
All of them - all are equally important
According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Protective Earth or Equipotential Bonding?
Green/Yellow
Black or Light Blue
Any other colour than green, yellow, black or light blue
According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Neutral?
Green/Yellow
Black or Light Blue
Any other colour than green, yellow, black or light blue
According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Active/Phase?
Green/Yellow
Black or Light Blue
Any other colour than green, yellow, black or light blue
In a single-phase flexible cable, which are the currently accepted colours?
Phase = Red
Neutral = Black
Earth = Green
Phase = Red
Neutral = Blue
Earth = White
Phase = Brown
Neutral = Blue
Earth = Green/Yellow
Phase = Brown
Neutral = Black
Earth = Yellow
In a multi-phase flexible cable, which are the commonly used colours?
Phase 1 = Red
Phase 2 = White
Phase 3 = Blue
Neutral = Black
Earth = Green/Yellow
Phase 1 = Brown
Phase 2 = Black
Phase 3 = Grey
Neutral = Blue
Earth = Green/Yellow
All of the above
Which Insulation is commonly used for general fixed wiring or flexible cords, but can become brittle in extreme temperatures?
PVC Insulation
Non Migratory PVC Insulation
Low Smoke PVC Insulation
VIR/TRS
Which Insulation is commonly used for installation in bitumen/polystryrene, as it will not leach its ploymers and become brittle?
VIR/TRS
PVC Insulation
Low Smoke PVC Insulation
Non Migratory PVC Insulation
Which Insulation is commonly used for general wiring in areas where safer visibility is required during a fire?
PVC Insulation
Non Migratory PVC Insulation
Low Smoke PVC Insulation
VIR/TRS
Which Insulation is commonly used for general use flexible cords and is a natural product?
VIR/TRS
PVC Insulation
Low Smoke PVC Insulation
Non Migratory PVC Insulation
Which Insulation is commonly used for Flexible Cables that expect rough treatment, yet still very flexible?
EPC Synthetic Rubber Insulation
HOFR Insulation
Silicon Rubber Insulation
Fire Resistant Insulation
Which Insulation is commonly used for Flexible Cables with medium strength and resistant to high temperatures, like soldering irons and welding machines?
EPC Synthetic Rubber Insulation
Silicon Rubber Insulation
HOFR Insulation
Fire Resistant Insulation
Which Insulation is commonly used for Flexible Cables in very hot or cold enviroments, like heating and cooking appliances?
HOFR Insulation
Fire Resistant Insulation
EPC Synthetic Rubber Insulation
Silicon Rubber Insulation
Which Insulation is commonly used for hen short term cable survival is required like in lifts, fire systems and emergency lighting?
HOFR Insulation
Fire Resistant Insulation
EPC Synthetic Rubber Insulation
Silicon Rubber Insulation
Which Insulation is commonly used for when longer-term fire survival is required but requires specialised installation techniques?
VIR/TRS
PE Insulation
MIMS Cable
XLPE Insulation
Which Insulation is commonly used for sheathing power distribution cables?
PVC Insulation
PE Insulation
MIMS Cable
XLPE Insulation
Which Insulation is commonly used for sheathing power distribution cable cores?
PVC Insulation
PE Insulation
MIMS Cable
XLPE Insulation
Which type of cable is stacks well, is economical to make, but can get twisted and is harder to bend smoothly?
Flat TPS
Circular TPS
Normal Duty Flexible Cords/Cable
Heavy Duty Flexible Cable
Neutral Screen
Which type of cable offers superior safety and mechanical protection when used as underground mains?
Flat TPS
Circular TPS
Normal Duty Flexible Cords/Cable
Heavy Duty Flexible Cable
Neutral Screen
Which type of cable is used for cheaper, general use flexible cords?
Flat TPS
Circular TPS
Normal Duty Flexible Cords/Cable
Heavy Duty Flexible Cable
Neutral Screen
Which type of cable is used for installation on cable trays and is flexible, and a good choice for 3 phase Motor supply cable?
Flat TPS
Circular TPS
Normal Duty Flexible Cords/Cable
Heavy Duty Flexible Cable
Neutral Screen
Which type of cable is used for flexible installation where extra toughness is required?
Flat TPS
Circular TPS
Normal Duty Flexible Cords/Cable
Heavy Duty Flexible Cable
Neutral Screen
Which best describes cable current rating capacity?
The minimum current they can continuously carry safely without overheating the insulation.
The maximum current they can continuously carry safely without overheating the conductor.
The maximum current they can continuously carry safely without overheating the insulation.
The minimum current they can continuously carry safely without overheating the conductor.
Which standard is used to work out the current carrying capacity of cables in New Zealand?
AS/NZS 3008 1.1
AS/NZS 3000 1.1
AS/NZS 3000 1.2
AS/NZS 3008 1.2
Which table within AS/NZS 3000 gives the temperature limits for various cable core insulation types?
AS/NZS 3000 1.2 Table 58
AS/NZS 3008 1.2 Table 53
AS/NZS 3000 1.2 Table 53
AS/NZS 3008 1.2 Table 55
