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WorksheetsElectrical Level 2
Total questions: 23
Worksheet time: 12mins
The installation of electrical appliances in domestic property is covered by which BS No?
BS EN 806
BS 1812
BS 12056
BS 7671
Domestic electrical appliances would be powered by-
230V AC
230V DC
110V AC
110V DC
An earthing electrode would be used to direct current to earth in which type of system?
TCT-S
TT
TN-S
TN-C-S
What size is the main earth equipotential bonding?
6mm
10mm
16mm
25mm
Which overcurrent protection device is shown here?
MCB
RCBO
RCD
Cartridge fuse
A cable passing through a metal back box is protected by-
Group 4
Hasp & Staple
Nylon backing ring
Rubber grommet
Which type of protection is used to protect the pipework under the boiler, as in the image shown here?
Main earth bonding conductor
Supplementary bonding
Cross bonding
Equipotential bonding
What is the likely result of the current in a cable exceeding its current capacity?
Damage to the insulation
Lights dimming
Intermittent fault
Lightbulbs blowing
What is this?
A switched fused spur with neon indicator
Remote light switch
Warning light
A switched fused spur
CPD (circuit protection devices) ratings are measured by what?
Ohms
Volts
Amps
Watts
An earthing fault could lead to-
Overheating
Electrocution
Reversed polarity
Faulty appliances
Identify the following-
Pliers
Pin nose pliers
Side cutters
Metal cutters
What is this-
Multi-point
Voltage calculator
Fluke tester
Multi-meter
What is the test to verify that earthing in a property is connected correctly?
Earth insulation
Insulation resistance
Polarity
Earth continuity
Which earthing system is shown here?
TCT-S
TT
TN-C-S
TNS
Which earthing system is shown here?
TCT-S
TN-S
TN-C-S
TT
What type of current is generated by a Photovoltaic Panel?
AC
DC
Hertz
Sine Wave
Electricity used in the home is-
Single phase
Two phase
Three phase
Phase shift
The correct flex for the ring main is-
1.5mm
2.5mm
10mm
Flex is not used for ring mains
The correct fuse rating for a 13Kw immersion heater is...
3 amp
5 amp
13 amp
20 amp
The correct fuse for a boiler is-
3 amp
5 amp
13 amp
20 amp
During installation, terminating live and neutral wires into the opposite terminals is dangerous as this will cause-
Reverse polarity
Insulation leakage
Earth loop fault
Adverse resistance
An insulation resistance test is carried out to ensure-
The correct system polarity
The earth fault loop is continuous
The integrity of the insulation is sound
The correct voltage AC is present
