Site Safe Electrical Safety on Construction Sites 2

Question 1

What must you check on a portable power tool before using it on a NZ construction site?

Accepted Answer

That it has a current in-date test and tag

Answer

That it is a recent model from a reputable brand

Answer

That it was purchased locally within NZ

Answer

That its colour matches site equipment standards

Question 2

What action should you take if a portable power tool has a damaged or frayed power cord?

Accepted Answer

Remove the tool from service and tag it as faulty

Answer

Repair the cord with electrical tape and continue use

Answer

Only use the tool while wearing rubber-soled boots

Answer

Ask a colleague to hold the cord away from wet areas

Question 3

What does the 'lock out, tag out' (LOTO) procedure achieve in electrical safety?

Accepted Answer

It ensures equipment is isolated and cannot be accidentally energised during maintenance

Answer

It locks storage areas containing electrical equipment

Answer

It tags cables to identify their purpose and voltage

Answer

It locks electrical panels from access by unauthorised personnel

Question 4

In NZ, what voltage threshold defines 'extra low voltage' (ELV)?

Accepted Answer

Below 50V AC or 120V DC

Answer

Below 240V AC

Answer

Below 110V AC

Answer

Below 400V AC

Question 5

When working in wet conditions on a construction site, what additional electrical precaution is required?

Accepted Answer

Ensure all electrical equipment is double insulated or protected by an RCD

Answer

Use longer extension leads to distance yourself from water

Answer

Work more quickly to reduce your time in wet conditions

Answer

Only battery-operated tools may be used during rainfall

Question 6

Which of the following is NOT a warning sign of an electrical hazard on a construction site?

Accepted Answer

A power tool with a current green test tag

Answer

A tingling sensation when touching equipment

Answer

A burning smell from an electrical panel

Answer

Equipment that repeatedly trips the RCD

Question 7

What is the correct response when an RCD trips on a construction site?

Accepted Answer

Reset it once; if it trips again, investigate the fault before using the circuit

Answer

Reset it immediately and continue working

Answer

Bypass the RCD using an extension lead from another circuit

Answer

Remove the RCD as it may be faulty and replace with a standard plug