EPC 38 - Installation & Connection of Consumers Mains

Question 1

What is the minimum permissible current carrying capacity of the consumer’s mains in a single phase single domestic installation?

Answer 1

63A.

WAER Clause 9.2.1.

Question 2

What is the minimum permissible current carrying capacity of the consumer’s mains in a three phase single domestic installation?

Answer 2

32A.

WAER Clause 9.2.1.

Question 3

Which Clause in the WA Electrical Requirements specifies the general requirements for the installation of consumer’s mains and sub-mains?

Answer 3

WAER_ Section 5 — LV underground network.

Question 4

What is the minimum permissible depth of underground residential consumer’s mains?
(Give the Wiring Rules Clause Number).

Answer 4

500mm.

Table 3.6

Question 5

Where does the consumer’s mains begin in a domestic installation in which the consumer’s mains are installed underground?

Answer 5

At the supply authority termination pillar.

WAER Section 5.

Question 6

Is it permissible to use heavy duty corrugated PVC conduit to enclose underground residential consumer’s mains?
(Give the Wiring Rules Clause Number).

Answer 6

Yes.

AS/NZS 3000 Clause 3.10.2.1 (a) (iv), Table 3.5.

Question 7

If a supply authority’s 2 core parallel-webbed aerial SERVICE LINE has one ribbed conductor, should it be the active or the neutral?
(Give the Wiring Rules Clause Number).

Answer 7

The neutral.

AS/NZS 3000 Clause 3.8.3.3 (c).