Oral Questions - Set 2

Question 1

How close are you able to clip cables above a ceiling without any further protection?

Answer 1

Not less than 50mm

AS/NZS 3000:2018, Clause 3.9.4.4

Question 2

Describe a situation where you are not required to clip the cables in a ceiling space.

Answer 2

In areas of less than 0.6m in height. Where cables are resting on an immovable continuous surface. AS/NZS 3000:2018, Clause 3.9.3.1 & 3.9.3.3

Question 3

Is it necessary to submit documentation when adding a separate final sub-circuit for an air-conditioner in a house?

Answer 3

Yes

Question 4

What is the maximum number of 10A socket outlets that can be installed on a 2.5mm2 final sub-circuit protected by a 16A circuit breaker?

Answer 4

15, AS/NZS3018:2001, Clause 6.6.5, Table 6.1

16, AS/NZS3000:2018 Table C9.

Question 5

How much insulation should be removed from a 2.5mm2 twin and earth TPS cable when fitting off a wall mounted socket outlet?

Answer 5

Only enough to allow the connection to be made.

AS/NZS 3000:2018, Clause 3.7.2.2

Question 6

Why must a metallic meter-box be bonded with the same size conductor as the neutral?

Answer 6

High fault currents could cause the short run of smaller conductor to be damaged.

Question 7

What colour is used to identify the neutral conductor in fixed wiring?

Answer 7

Black or Light Blue

AS/NZS 3000:2018, Table 3.4

Question 8

What are the mechanical protection requirements for cable joints in a roof space?

Answer 8

Use of a suitable junction box

Question 9

What does Section 1 of the AS/NZ300 cover?

Answer 9

Scope, application and fundamental principles

Electrical definitions

Question 10

What does Section 2 of the AS/NZ3000 cover?

Answer 10

General arrangement, control and protection

MSB, C/B&RCDs, Max Demand

Question 11

What does Section 3 of the AS/NZ3000 cover?

Answer 11

Selection and installation of wiring systems

Cables and its location; conduits, ceilings, walls etc.

Question 12

What does Section 4 of the AS/NZ3000 cover?

Answer 12

Selection and installation of electrical equipment

Lights, power sockets, appliance, Transformer etc.

Question 13

What does Section 5 of the AS/NZ3000 cover?

Answer 13

Earthing arrangements and earthing conductors

Question 14

What does Section 6 of the AS/NZ3000 cover?

Answer 14

Damp situations

Wet areas; pools, showers, saunas etc.

Question 15

What does Section 7 of the AS/NZ3000 cover?

Answer 15

Special electrical installations

Extra Low voltage etc.

Question 16

What does Section 8 of the AS/NZ3000 cover?

Answer 16

Verification

Testing