Electrical design

1. Which of the following is NOT a statutory document

• IET Wiring Regulation BS 7671

• Electricity Safety Quality and Continuity Regulations

• Health and Safety at Work Act

• Electricity at Work Regulations

The IET Wiring regulations BS7671: 2018 is divided into how many parts?

• 7

• 6

• 8

• 1

The IET Wiring Regulations state that the colour code for the identification of protective conductors shall be

• Blue

• Yellow and green

• orange

• Green

Fitting instructions for a component will normally be found in

• British standards

• Manufacturers data

• BS 7671

• Electrical wholesalers

To complete an electrical installation it will normally be necessary for an electrician to be provided with

• An assembly specification

• A site plan and circuit diagram

• A wiring diagram and specification

• A circuit diagram and inspection manual

The minimum cross-sectional area of an aluminium conductor for use in electrical installation is

• 4mm

• 6mm

• 10mm

• 16mm

Mineral insulated metal sheathed cable has insulation which is

• Magnesium oxide

• Magnesium dioxide

• Manganese oxide

• Manganese dioxide

The installation which employs pre made cables and distribution boxes and equipment all connected together with large plug and socket arrangement is a

• Self test system

• Modular system

• Busbar system

• powertrack system

Mineral insulated cables are sometimes provided with an overall covering of pvc to?

• Make a cable waterproof

• Protect the cable from sunlight and harmful rays

• Prevent corrosion of the sheath

• Make the cable suitable for use in low ambient temperatures

The IET wiring regulations in relation to cable selection gives tables on

• Length

• Current carrying capacity

• Height

• Overheating capacity