EL0018 Topics 1, 2 & 3

What is the furthest measurement for the vertical distance above a surface that is deemed within arms reach?

Answer explanation

AS 3000 1.4.16 Arms Reach

What is the clause that defines the term indirect contact

What are the 4 methods of basic protection that protects from "direct contact"

• Insulation

• Barriers or Enclosures

• Obstacles

• Placing out of Reach

• Circuit Protection

Answer explanation

AS 3000 1.5.4.2 Methods of Protection

What is the maximum allowable percentage voltage drop for any low voltage installation?

• 10%

• 6%

• 5%

• 2%

Answer explanation

3.6.2 Voltage Drop Value is 5%

What are the 4 acceptable methods to determine maximum demand?

• Calculation

• Limitation

• Measurement

• Assessment

• Determination

Answer explanation

2.2.2 Maximum Demand

Do paints, varnishes, enamels or similar products alone meet the requirements for 'protection by insulation'

• Yes

• No

Answer explanation

1.5.4.3 Protection by Insulation

Generally not considered as providing adequate insulation for basic protection.

What is the maximum allowable temperature for a hand held non-metallic device?

• 65°C

• 70°C

• 40°C

• 55°C

Answer explanation

AS 3000 Table 4.1

What is the minimum insulation resistance for a low voltage installation?

• 0.5 MΩ

• 1 MΩ

• 2 MΩ

• 3 MΩ

Answer explanation

AS 3000 8.3.6.3

The minimum insulation resistance for a low voltage installation is 1 MΩ. This value ensures proper electrical safety and prevents leakage of current.

What is the maximum disconnection time for final sub circuits that supply socket outlets, hand held equipment and portable equipment?

• 4 seconds

• 0.4 seconds

• 5 seconds

• 0.5 seconds

• Instantly

Answer explanation

AS 3000 1.5.5.3 d) 0.4 second disconnection time

What is the maximum disconnection time for final sub circuits that supply fixed stationary equipment and submains

• 4 seconds

• 0.4 seconds

• 5 seconds

• 0.5 seconds

• Instantly

Answer explanation

AS 3000 1.5.5.3 d) 0.4 second disconnection time