Plumbers Electrical

Type of earthing system that uses an earth electrode?

• TNS

• TT

• TNCS

• TNC

Type of tester which complies with GS38 that is authorized to check that a circuit has been made dead?

• Approved Voltage Indicator

• Volt stick

• ohm meter

• screw driver

Type of earthing conductor also called PME, that uses a PEN conductor which links c.p.c & neutral

• TNS

• TNCS

• TT

• TNC

British Standard relates to cable sizing and electrical installation?

• BS 7671

• BS 7617

• BS 6717

• BS 6771

Type of cable most appropriate for the final connection to a boiler to a fused spur?

• 3 core heat resistant cable such as butyl

• armoured cable

• twin & earth

• cat 5/6

single core thermoplastic must be used within

• conduit/trunking

• a consumer unit

• a junction box

• a socket outlet

Safe Isolation procedure is laid out in?

• GS 38

• HASWA 1974

• EWR 1989

• Manufacturing instructions

Domestic properties are normally wired throughout in

• SWA

• Fire Proof cable

• Twin & Earth (Flat Profile)

• Flex

Size of a main earthing conductor

• 16 mm²

• 10 mm²

• 6 mm²

• 2.5 mm²

Size of a main equipotential bonding conductor

• 16 mm²

• 10 mm²

• 6 mm²

• 2.5 mm²