Electrical supply - Electricity at Work Regulations B7671

Evie is setting up electrical equipment in a damp environment and needs to use a 25V AC operating voltage, following the Electricity at Work Regulations B7671. What voltage colour should she use for this setup?

• Yellow

• Violet

• Blue

• Red

Henry is working on a construction site and notices that the power tools are all using 110V AC operating voltage, as specified by the Electricity at Work Regulations B7671. What is the main use for this 110V AC operating voltage on site?

• Fixed machinery

• General site voltage

• Domestic and site offices

• Damp conditions

Henry is setting up electrical equipment for an event and needs to use a cable suitable for 230V AC operating voltage. According to the Electricity at Work Regulations B7671, the voltage colour for 230V AC operating voltage is _______.

• Blue

• Red

• Yellow

• Green

Thomas is setting up equipment in a factory and needs to choose the correct operating voltage for the machinery. According to the Electricity at Work Regulations B7671, what is the use for 400V AC operating voltage?

• A) Fixed machinery

• B) General site voltage

• C) Domestic and site offices

• D) Damp conditions

Isabelle is working at a remote construction site and needs to provide electricity for her tools. One way she can do this is to use ______ operated equipment.

• battery

• manual

• solar

• wind

Kiara is setting up electrical equipment at a construction site. She needs to know the standard voltage for single phase AC commonly used on such sites. Fill in the blank: A common voltage for single phase AC on a site is ______ volts.

• 110

• 220

• 12

• 440

James is setting up electrical equipment at a construction site. Fill in the blank: A 230v single phase AC ______ be used on site.

• can

• cannot

• should not

• must not

Priya is setting up electrical equipment at a construction site and needs to reduce the voltage for safe site use. To do this, she should use a ______ transformer.

• step-down

• step-up

• isolation

• auto

Leo is renovating his house and needs to drill into a brick wall to hang a shelf. What should he beware of when working with brickwork?

• Hidden conduit

• Exposed wires

• Chafing cable

• Melting cable

Samuel notices that a cable in his workshop is rubbing against the edge of a metal table every time he moves equipment. What is a potential hazard in this situation?

• Chafing cable

• Exposed wires

• Storing cable incorrectly

• Melting cable