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WorksheetsElectrical Safety PP 1 & part 1
Total questions: 58
Worksheet time: 32mins
What is considered low voltage in domestic electrics for single phase AC?
24v AC
230v AC
18v AC
12v AC
Which of the following is not an example of extra low voltage for safety in domestic electrics?
24v DC
18v DC
12v DC
110v single phase AC
Under the regulation, when does a plumber not need to be Part P qualified to replace a component?
When installing a new component
When replacing a like-for-like component outside a danger zone
When the component is in the kitchen
When the component is in the loft
What is considered a danger zone according to the text?
Anywhere outside the bathroom, kitchen, or outhouse
Only inside the loft
Within a bathroom, kitchen, or outhouse
Only on the landing outside an airing cupboard
Who needs to be a fully qualified electrician?
A plumber working outside the danger zone
A plumber replacing parts in the loft
Someone performing an installation
A plumber replacing a like-for-like component in the kitchen
Where is it not considered a danger zone if the airing cupboard door is on the landing?
In the bathroom
In the kitchen
On the landing
In the loft
Which of the following is NOT a situation where electricity is used in plumbing?
Pumps
Showers
Boilers
Refrigerators
In domestic electrics, which device is used to control the temperature of heating systems?
Thermostats
Cookers
Immersion heaters
Programmers
What is the purpose of programmers in domestic electrics?
What is electricity described as in the document?
A type of matter
A form of energy
A chemical reaction
A state of matter
Which of the following is NOT mentioned as a way to produce electricity?
Friction between materials
Heat applied to dissimilar metals
Pressure acting on certain types of crystals
Chemical reaction between gases
What term is used to describe the production of electricity through heat applied to dissimilar metals?
Thermocouple
Electrolysis
Conduction
Induction
What generates electricity when pressure is applied to certain types of crystals?
Thermocouple
Piezoelectric sparkers
Electrolytic cells
Magnetic induction
According to the document, what happens when coils are rotated within a magnetic field?
It creates a static charge
It produces heat energy
It generates electricity
It reduces electrical resistance
What does AC stand for in the context of domestic electrics?
Alternating current
Absolute current
Accelerated current
Alternating circuit
What is the frequency of the mains electricity in the UK, as shown in the sinusoidal wave form?
20 Hz
50 Hz
60 Hz
100 Hz
What does the sinusoidal wave form in the diagram represent?
Voltage over time
Current over time
Resistance over time
Power over time
What does DC stand for in the context of domestic electrics?
Direct current
Direct circuit
Domestic current
Domestic circuit
What happens to the cathode in a dilute acid solution?
It generates electricity
It remains unchanged
It eats away at the anode
It attracts the anode
What is the role of dissimilar metals in a dilute acid solution for domestic electrics?
To create a magnetic field
To generate heat
To conduct electricity
To produce a chemical reaction
What is the purpose of the dilute sulphuric acid in the diagram?
To act as a lubricant
To serve as an electrolyte
To clean the metals
To cool down the system
Which terminal is the zinc anode connected to in the diagram?
Positive terminal
Negative terminal
It is not connected to any terminal
It alternates between terminals
What is the voltage of sockets in a domestic property according to the image?
110V
12V
230V
24V
What type of current requires a step-down transformer for use in domestic properties as shown in the image?
230V DC
110V single phase AC
24V DC
18V DC
Which voltages may battery operated tools use in a domestic property as per the image?
230V and 110V
24V and 230V
18V and 12V
110V and 18V
What was the cause of Paul Hamlyn's death according to the post-mortem?
Natural causes
Electrocution
A fall
Poisoning
Where did the incident that led to Paul Hamlyn's death occur?
At his home on Chase Road West
At a house in Forge Street, Dedham
At Colchester General Hospital
At a plumber's workshop
What had been changed in the house where the accident occurred weeks before the incident?
The electrical wiring of the entire house
The toilet macerator
The fuse box
The tool box
What did the plumber do after changing the toilet macerator?
He rewired it back into the fuse box
He left it disconnected
He put it on a normal plug
He installed a new fuse box
What was Paul Hamlyn doing when he was killed?
He was installing a new macerator
He was touching a live cable
He was reaching for his tool box
He was rewiring the fuse box
What is the name of the unit where the electrical wiring of a house is connected and controlled?
Lighting circuit
Radial circuit
Consumer unit
Wall and ceiling unit
What should you be careful with when dealing with a radial circuit?
Connecting the lights
Going into wall and ceiling
Wiring the consumer unit
Choosing the correct light switch
What does the diagram of the lighting circuit primarily show?
How to wire a consumer unit
The layout of a radial circuit
The connection of multiple lights in a circuit
The process of going into wall and ceiling
What is the name of the electrical distribution system shown in the diagram for sockets?
Circuit breaker
Ring main
Fuse box
Power grid
Which component is used to protect an appliance and can be switched on and off in the diagram?
Non-fused spur
Consumer unit
Switched fused spur
Fixed appliance
What should you be careful about when drilling into walls and floors according to the caution mentioned in the image?
Electrical wiring
Water pipes
Structural integrity
Aesthetics
What type of cable is used in a lighting circuit for domestic electrics?
2.5mm twin and earth
1.5mm twin and earth
13 amp twin and earth
32 amp twin and earth
What is the ampere rating for circuit protection in a domestic lighting circuit?
6 amp
13 amp
32 amp
2.5 amp
How many circuits are typically used for a lighting circuit in a two-story house?
One circuit for the entire house
Two circuits, one for each floor
Three circuits, one for each floor and one extra
Four circuits, two for each floor
What is the ampere rating for appliance protection (plug) in a domestic ring main?
6 amp
13 amp
32 amp
2.5 amp
What is the ampere rating for circuit protection (consumer unit) in a domestic ring main?
6 amp
13 amp
32 amp
2.5 amp
What is the ampere rating of a micro circuit breaker (MCB) for lighting in domestic electrics?
6 amp
16 amp
32 amp
10 amp
Which appliance requires a micro circuit breaker (MCB) with a 32 amp rating?
Lighting
Immersion
Water heater
Cooker
What is the purpose of a micro circuit breaker (MCB) in domestic electrics?
To increase electrical flow
To provide protection of circuits
To decrease energy consumption
To convert AC to DC
Who is allowed to interfere with the ring main or lighting circuit according to the document?
Any plumber
A qualified electrician
Any person
A competent plumber
What can plumbers do in relation to domestic electrics as stated in the document?
Install a new lighting circuit
Attach an appliance from a fused spur
Modify the ring main
Replace electrical wiring
Where is the consumer unit typically found in a property?
Near the water supply
Where the electrics enter the property
In the attic
Outside the property
What does the consumer unit contain?
Fuses and light bulbs
MCBs, residual current device, RCDs and main isolator
Batteries and switches
Wires and cables
What is the purpose of the consumer unit in domestic electrics?
To provide electricity to the property
To measure electricity consumption
To divide the single source into multiple circuits
To store electrical energy
What must be isolated when an MCB needs replacing in a consumer unit?
The entire building
The main isolator
The individual MCB
The electric meter
What is the role of an electrician when an MCB in the consumer unit needs to be replaced?
To isolate the main isolator
To install a new consumer unit
To replace the item
To monitor the MCB
What is the responsibility of the supplier in a domestic electrical system?
Feeds the circuits
Consumer unit
Up to the meter
From the consumer unit onward
What is the homeowner responsible for in a domestic electrical system?
Mains supply
Supplier's fuse
Meter
From the consumer unit onward
Which of the following is NOT a component of a domestic electrical system as shown in the image?
Earth bar
Supplier's fuse
Mains supply
Water meter
What does the consumer unit do in a domestic electrical system?
Measures the electricity usage
Protects against electrical surges
Feeds the circuits
Connects to the water supply
What is the correct sequence for wiring in the components from a switched fused spur in a Central heating S plan?
Boiler, Pump, Programmer, Cylinder thermostat, Room thermostat, 2 x two port valves
Programmer, Cylinder thermostat, Room thermostat, Boiler, Pump, 2 x two port valves
Cylinder thermostat, Room thermostat, Boiler, Pump, Programmer, 2 x two port valves
Room thermostat, Boiler, Pump, Programmer, Cylinder thermostat, 2 x two port valves
Which of the following is NOT a component of the Central heating Y plan?
Programmer
Cylinder thermostat
Room thermostat
Air conditioner
What is the function of the three port valve in a Central heating Y plan?
To regulate water temperature
To control water flow direction
To measure water pressure
To filter impurities from water
