6. What colour cable USUALLY signifies 100 volts power supply on site?
D - Yellow
C - Black
A - Red
B - Blue
7. Test instruments used for working on electrical systems should...
C - Have non-insulated test probes
D - Have insulated test probes
B - Be less than 10 years old
A - Be yellow in colour
8. The specific effects on the human body of a major electric shock are one of the following...
D - Chest pains
A - Dermatitis
B - Burns and cardiac arrect
C - Broken bones
9. Which of the following procedures should be used when more than one person will be working on circuits supplied from a distribution board which has been switched off?
C - Giving each operative a volt stick
A - The use of a multi-lock hasp on the isolator with a padlock for each operative
B - Blowing a horn before the power is switched on again
D - Telling everyone what time the power will be switched on again
10. Which of the following us NOT a suitable means of isolating a circuit?
D - Fitting a padlocked circuit breaker lockout
A - Removing a fuse and locking the distribution board
B - Putting insulating tape over the circuit breaker
C - Padlocking the isolating switch
11. The normal procedure for working on electrical equipment should be which one of the following?
C - Using insulated tools
D - Live working
A - Dead working
B - Wearing insulated gloves
12. Which of the following is NOT a requirement of low voltage safe isolation practice?
D - The conductors are proved to be dead at the point of work
A - Ensuring that the correct point of isolation is identified
B - The person carrying out the working is issued with insulating gloves
C - A caution notice should be applied at the point of isolation
13. For all live working activities it is necessary to...
D -Keep your fingers crossed
B - Wear rubber gloves only
A - Carry out a risk assessment as required by the EAW Regulations
C - Be accompanied
14. Which of the following would you use to replace the fuse in a plug if fuses were NOT available?
B - A piece of silver paper
C - A bit of wire
D - None of the options listed
A - A nail
15. Electrical installations on construction sites should be periodically inspected and tested...
A - Every 3 months
D - Every month
B - Every year
C - Every 6 months
16. Which of the following should be used to prove a circuit or equipment is dead after isolation?
C - A voltage stick
D - A multimeter
B - A proprietary test lamp or two-pole voltage
A - A lamp holder with a length of flex attached
17. Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?
B - Step-down transformer
C - Cable avoidance tool
D - Residual current device (RCD)
A - Step-down transformer
18. Where there is no local means of isolation for equipment or circuits to be worked on, which of the following is the preferred method of isolation?
A - Isolation of the main switch of DB switch-disonnector
D - Disconnecting the individual circuit from the DB
B - Isolation of the individual circuit breaker or fuse
C - Pulling out the distributor's cut-out fuse
19. The probes of voltage detectors and test instruments used on electrical systems should be...
B - Accompanied by a calibration certificate
C - Shaped or have barriers to prevent finer contact with the tips
A - Manufactured in the UK
D - Coloured red
20. In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should...
