Wiring systems

Identify the type of installation shown

• concealed wiring

• surface wiring

• embedded wiring

• manual wiring

In concealed wiring ,non sheathed cable must have mechanical protection (metallic conduit) –if installed at a depth of less than _______ mm from the surface

• 50

• 60

• 70

• 80

Identify the support shown here

• PVC trunking

• PVC skirting

• PVC tray

• PVC conduit

The multicompartment trunking shown is used for

• segregation of different catergories of circuit

• protection of all types of circuits

• ensuring neatness in wiring

• cable management

Which of the following is NOT a common size for PVC conduit?

• 16 mm

• 18 mm

• 20 mm

• 25 mm

PVC conduit system is not suitable for temperature exceeding

• 60⁰ C

• 70⁰ C

• 80⁰ C

• 90⁰ C

The object shown is used for

• PVC conduit bending

• drawing in cables

• strengthen flexible conduit

• joining 2 flexible conduits

The colour that is used to identify electrical wiring system is

• orange

• blue

• yellow

• red