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- 1. Multiple Choice
Type of earthing system that uses an earth electrode?
TNS
TT
TNCS
TNC
- 2. Multiple Choice
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
- 3. Multiple Choice
Type of earthing conductor also called PME, that uses a PEN conductor which links c.p.c & neutral
TNS
TNCS
TT
TNC
- 4. Multiple Choice
British Standard relates to cable sizing and electrical installation?
BS 7671
BS 7617
BS 6717
BS 6771
- 5. Multiple Choice
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
- 6. Multiple Choice
single core thermoplastic must be used within
conduit/trunking
a consumer unit
a junction box
a socket outlet
- 7. Multiple Choice
Safe Isolation procedure is laid out in?
GS 38
HASWA 1974
EWR 1989
Manufacturing instructions
- 8. Multiple Choice
Domestic properties are normally wired throughout in
SWA
Fire Proof cable
Twin & Earth (Flat Profile)
Flex
- 9. Multiple Choice
Size of a main earthing conductor
16 mm²
10 mm²
6 mm²
2.5 mm²
- 10. Multiple Choice
Size of a main equipotential bonding conductor
16 mm²
10 mm²
6 mm²
2.5 mm²
- 11. Multiple Choice
Size of meter tails?
16 mm²
10 mm²
6 mm²
25 mm²
- 12. Multiple Choice
The heights of switches and sockets can be found in which aspect of the Building regulations
Part P
Part M
Part L
Part A
- 13. Multiple Choice
Electrical Safety can be found in which aspect of the Building regulations
Part P
Part M
Part L
Part A
- 14. Multiple Choice
R1 & R2 values are associated with
Resistance of Line & neutral conductors
Resistance of Line & earth conductors
Resistance of neutral & earth conductors
Resistance of Line & Line conductors
- 15. Multiple Choice
Dead polarity ensures that the circuit is switched through the
Line conductor
Neutral conductor
Earth conductor
Yellow & green conductor
- 16. Multiple Choice
Live polarity ensures that the incoming supply is
cross-connected
Not cross-connected
- 17. Multiple Choice
This symbol is associated with
Class I (needs earthing)
Class II
Class I (does not need earthing)
Class 0
- 18. Multiple Choice
This symbol is associated with
Class I
Class II
Class 3
Class 0
- 19. Multiple Choice
The type of meter used for continuity of c.pc. is?
Earth Loop Impedance
Low Resistance Ohm meter
Volt meter
Ammeter
- 20. Multiple Choice
What kind of meter is connected in series and has a very low internal resistance?
Earth Loop Impedance
Low Resistance Ohm meter
Volt meter
Ammeter
- 21. Multiple Choice
What kind of meter is connected in parallel to measure potential difference?
Earth Loop Impedance
Low Resistance Ohm meter
Volt meter
Ammeter
- 22. Multiple Choice
What kind of meter can measure the amount of current flowing through a conductor by clamping across it?
Earth Loop Impedance
Low Resistance Ohm meter
Volt meter
Clamp meter
- 23. Multiple Choice
What is this?
a proving unit
mains supply
an approved tester
a multi-lock hasp
- 24. Multiple Choice
This is an Approved Voltage Detector. Which document did the Health & Safety Executive issue regarding Safe Isolation Procedure
GS 38
EWR 1989
HASWA 1974
COSHH 2002
- 25. Draw
Draw a battery, switch, fuse and an ammeter in circuit
Background image - 26. Multiple Choice
What is the total resistance of the circuit shown?
100 Ω
90 Ω
50 Ω
25 Ω
- 27. Multiple Choice
What is the total resistance of the circuit shown?
85.6 Ω
890 Ω
200 Ω
25 Ω
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