240v installations

1.       Which AS?NZ 3000 clause Lists the three ways that wiring systems can be selected and installed so as to minimise the risk of mechanical damage?

• Mechanical characteristics of the wiring system.

• Location selected.

• Provision of additional local or general mechanical.

• 3.3.2.6

Answer explanation

Rule 3.3.2.6 includes all three points in A,B and C

1.       What is the requirement for the separation of above ground low voltage wiring systems from gas and water services?

According to 3.9.8.4 (b)

• Maintain a distance of at least 25mm from these services

• Maintain a distance of at least 35mm from these services

• Maintain a distance of at least 45mm from these services

• Maintain a distance of at least 50mm from these services

1.       What are the AS/NZS 3000 requirements for wiring installed through the space formed between roofing or wall lining material and its immediate support?

• 600mm

• 50mm

• Not permitted

• 100mm

1.       Provide one example of situation where wiring may have been installed in a prohibited location under roofing or wall lining material.

As per AS 3000 rule 3.9.4.3.1

• Between tile batten and roofing tiles

• On the top of the roof

• inside a wall

• under the concrete

1.       What are the sealing arrangements where a wiring system has penetrated a fire-rated barrier in a building, such as above a suspended ceiling?

As per AS 3000 rule number : 3.9.9.3

• 100mm separation

• Silicon it up

• The opening must be close fitting and at least 50mm from other services.

  Opening can be no greater than 500mm² (e.g. 25mm diameter hole)

  Fire rating must be reinstated

• make sure no one can see it

List two considerations that need to be addressed when installing electrical wiring and accessories in heritage listed buildings

• Victorian style

• Style of accessories,

  Protection of finished surfaces (e.g. original brickwork)

• old types

• make sure it's heritage

1.       Which NSW Government department should you contact for advice before conducting work on a Heritage listed building?

• NSW Environment and Electrical contractors

• NSW Goverment and Heritage

• VIC Environment and Heritage

• NSW Environment and Heritage

1.       Extension leads on construction sites must have plug tops and cord extension sockets with clear castings. What is the purpose of this?

• To allow for inspection of wiring and terminations.

• To allow for inspection of wiring.

• To allow for inspection of terminations.

• To allow for wiring and terminations.

1.       What is the minimum rating for socket-outlets that accommodate 3-pin flat pin plugs where they are installed to supply each site in a caravan park?

AS/NZS 3001: 2.2.7.2 (a)

• 10A

• 15A

• 20A

• 25A

1.       What type of switch is required to control light fittings in a caravan?

AS/NZS 3001: 3.6.2

• Double pole switch

• Single pole switch

• No pole switch

• Tripple pole switch