Electrical Safety Requirements

What is considered to be the maximum safe voltage for PORTABLE ELECTRICAL TOOLS on construction sites?

• 110 Volts

• 150 Volts

• 230 Volts

• 400 Volts

While digging a trench, you uncover a length of yellow marker tape. What does this mean?

• The area has a high water-table

• There is a buried electrical cable

• There is contaminated soil below the level of the marker tape

• The excavation must now be supported

Which of the following could you use for a plug if No fuses are available?

• A nail

• A piece of silver paper

• A bit of wire

• None of these options

How often should you check electrical equipment on site?

• Every time you use it

• Every day

• Every dayOnce a week

• It's my employer's responsibility

When using an electric cable that is on an extension reel, which of the following actions should you undertake?

• Leave as much as possible coiled up on the reel

• Uncoil it fully and check it for damage

• Wipe it clean with a damp cloth

• Only uncoil what you need

What is used to reduce 230 Volts to 110 Volts on site?

• Residual current device (RCD)

• Transformer

• Circuit breaker

• Generator

A portable electric generator on site has two different power outlets; what colour would the 230 Volt outlet be?

• Blue

• Green

• Yellow

• Red

A portable electric generator on site has two different power outlets; what colour would the 110 Volt outlet be?

• Blue

• Green

• Yellow

• Red

Where 230 Volt mains voltage is used, what additional protection is recommended?

• Step-down transformer

• Step-down generator

• Cable avoidance tool

• Residual Current Device (RCD)

What colour cable USUALLY signifies a 110 Volt power supply on site?

• Red

• Yellow

• Blue

• Black