WorksheetsMTL1 H&S Learner Outcome 6
Total questions: 28
Worksheet time: 14mins
What is a common cause of electrical accidents reported to the HSE?
Using tools with rubber handles
Poorly maintained equipment
Installing new sockets
Painting near electrical outlets
Which of the following is a legal requirement for employers regarding electrical systems?
Replace all electrical equipment every year
Allow employees to repair faulty wiring
Periodically inspect and test electrical systems
Only use battery-powered tools
What is the recommended minimum distance between heating pipework and electrical cables?
5mm
10mm
25mm
50mm
Which of the following is considered a common electrical hazard in both construction sites and private dwellings?
Using cordless tools
Trailing cables
Painted sockets
Low-voltage lighting
What should you do if you notice damaged electrical cables or sockets while working in a private dwelling?
Ignore them if they still work
Attempt to fix them yourself
Report them to the customer or person in charge
Cover them with tape
Why is 110V supply commonly used on construction sites instead of 230V?
It is more powerful
It is cheaper to install
It reduces the risk of fatal electric shock
It allows more tools to be used at once
What colour coding is used for 230V electrical supply on site?
Yellow
Blue
Red
Green
Which voltage supply is typically used for fixed industrial machinery on site?
110V
230V
400V
36V
What is one disadvantage of battery-powered cordless tools?
They are heavier than mains-powered tools
They require constant recharging and multiple power packs
They pose a higher risk of electric shock
They cannot be used outdoors
What safety measure must be in place when using 230V tools on a construction site?
They must be used only indoors
They must be connected to a Residual Current Device (RCD)
They must be colour coded red
They must be used with extension cords
What should you check first before using a portable power tool?
If it has a shiny surface
If it has an in-date PAT test label
If it has a long cable
If it is the newest model
Which of the following is a sign that a power tool may be unsafe to use?
The tool is lightweight
The plug is slightly warm
There are taped joints on the cable
The tool has a double insulated symbol
Why must extension cables be fully unwound before use?
To prevent tangling
To reduce tripping hazards
To prevent overheating
To make them easier to store
What should you do if a power tool feels excessively warm or begins sparking during use?
Continue using it until the job is finished
Cool it down with water
Have it checked by a competent electrician
Use a different extension cable
What does the double insulated symbol on a power tool indicate?
The tool is waterproof
The tool has two layers of protective casing
The tool must be used with gloves
The tool is only for indoor use
Why must records of PAT tests and inspections be kept up to date?
To reduce paperwork
To comply with insurance requirements
To ensure early recognition of faults and monitor misuse
To avoid replacing tools
How often should hand-held equipment be formally inspected and tested on a construction site?
Every 6 months
Monthly visual inspection, every 3 months combined testing
Once a year
Weekly
What is one benefit of conducting regular visual inspections of electrical equipment?
It reduces the need for PAT testing
It ensures tools are always fully charged
It helps identify visible signs of damage before use
It guarantees tools will last longer
What is the first action to take when a power tool fails a safety check?
Continue using it until a replacement arrives
Report it to a competent person, manager, or supervisor
Store it in a secure location
Attempt to repair it yourself
How can you prevent a faulty tool from being used again?
Lock it in a toolbox
Remove the fuse and label it ‘Faulty. DO NOT USE
Hide it from other workers
Cover it with a cloth
What should be done with a tool that is beyond repair?
Send it back to the manufacturer
Leave it in the workshop for parts
Remove the plug and flex, then dispose of it safely
Give it to another worker
What is the standard electrical supply in domestic properties in the UK?
110V DC
230V 50Hz AC single phase
400V three phase
12V battery supply
Which device is approved for proving a circuit is dead before electrical work begins?
Neon screwdriver
Volt stick
GS38 approved voltage indicator
Multimeter
What must be done after switching off the supply at the consumer unit during safe isolation?
Remove the fuse from the plug
Place a warning notice and lock off the supply
Disconnect all appliances
Call an electrician
What is the correct sequence when using a voltage indicator to prove a circuit is dead?
Test the circuit, then test the proving unit
Test the proving unit, test the circuit, re-test the proving unit
Test the circuit only
Test the plug and socket
Why is temporary continuity bonding used when cutting into metal pipework?
To prevent water leaks
To maintain earth bonding and prevent electric shock hazards
To improve pipe insulation
To reduce noise from the pipework
What equipment is used for temporary continuity bonding?
Two crocodile clips joined by 10mm² multi-strand earth cable
A single insulated wire
A plastic clamp and tape
A rubber hose and metal clamp
When should temporary continuity bonding clips be installed?
After the pipe has been cut
During soldering
Before the pipe is cut
After the pipe is painted
