2365 203 #13 - Wiring Systems & Materials

What is the main consideration when selecting a wiring system?

• Colour of cable

• Number of electricians available

• Suitability for the environment

• Cost of labour

Which of the following is most appropriate in a damp or wet area?

• Twin and Earth

• PVC conduit

• SWA cable (Steel Wire Armoured)

• Flexible flex

What wiring system is typically used in domestic walls?

• MICC

• Twin and Earth

• Cat 6

• Fire-rated flex

What type of conduit is often used in commercial buildings where impact protection is needed?

• Plastic mini trunking

• Flexible conduit

• Galvanised steel conduit

• PVC T&E

Why is steel wire armoured (SWA) cable used?

• It is easier to install

• It prevents electromagnetic interference

• It provides mechanical protection in harsh conditions

• It’s the cheapest cable type

What are external influences in cable selection?

• Manufacturer brand

• Environmental conditions that affect performance

• Number of ring finals

• Switch heights

What cable type is suitable for underground installation?

• Twin and Earth

• Fire alarm cable

• SWA

• Cat 5e

Which document guides installers on selecting wiring systems?

• Part G

• EAWR

• BS7671 Chapter 52

• GN3 Section 1

What must be considered when installing wiring near heat sources?

• Use of fire alarm cable

• Voltage drop

• Cable insulation temperature rating

• Earth loop impedance

What type of environment would require LSF (Low Smoke & Fume) cable?

• Garage

• Outdoors

• Escape routes or enclosed public spaces

• Kitchens