Electrical Installation Methods 3/04

What is the primary purpose of conduit in electrical installations?

• Aesthetic appeal

• Mechanical protection for cables

• To enhance signal transmission

• To reduce costs

Which of the following is a common method for securing cables to a wall?

• Cable ties

• Duct tape

• Velcro straps

• String

What type of cable is most commonly used for domestic wiring in the UK?

• Armoured cable

• Twin and earth cable

• SWA cable

• Coaxial cable

What is the purpose of using a junction box in wiring systems?

• To connect two circuits without a break

• To protect against water ingress

• To house multiple cables safely

• To provide aesthetic appeal

Which of the following is a key factor when determining the route of electrical cables?

• The color of the insulation

• Ease of access for future maintenance

• Personal preference

• Length of the cable

What type of enclosure is required for electrical installations in wet areas?

• IP20

• IP44

• IP67

• IP55

When installing lighting fixtures, what must be considered regarding the weight of the fixture?

• Type of light bulb used

• Mounting method and support

• Color of the fixture

• Length of the wiring

Which regulation covers the installation of electrical systems in the UK?

• BS 1363

• BS 7671

• BS 6007

• BS 5434

What is the first step in installing a new circuit?

• Connecting the circuit to the consumer unit

• Planning the circuit route

• Selecting the cable size

• Testing the circuit

What does the term "derating" refer to in cable installations?

• Reducing the voltage rating of a cable

• Adjusting the current-carrying capacity based on environmental factors

• Increasing the length of the cable

• Changing the insulation type