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In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should:
In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should:
The normal procedure for working on electrical equipment should be which one of the following?
The normal procedure for working on electrical equipment should be which one of the following?
Test instruments used for working on electrical systems should:
Test instruments used for working on electrical systems should:
Under the Electricity at Work Regulations, live working is considered:
Under the Electricity at Work Regulations, live working is considered:
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Which of the following would you use to replace the fuse in a plug if fuses were NOT available?
Which of the following would you use to replace the fuse in a plug if fuses were NOT available?
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To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?
To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?
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The nominal single phase voltage in the UK is?
The nominal single phase voltage in the UK is?
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When is live working permissible?
When is live working permissible?
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Which of the following is NOT a requirement of low voltage safe isolation practice?
Which of the following is NOT a requirement of low voltage safe isolation practice?
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The specific effects on the human body of a major electric shock are one of the following:
The specific effects on the human body of a major electric shock are one of the following:
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The lowest level of electrical current which can harm the human body is normally measured in:
The lowest level of electrical current which can harm the human body is normally measured in:
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With regard to the effect of electrical current on the human body, one of the following is correct:
With regard to the effect of electrical current on the human body, one of the following is correct:
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Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?
Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?
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What colour cable USUALLY signifies 110 volt power supply on site?
What colour cable USUALLY signifies 110 volt power supply on site?
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A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be?
A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be?
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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?
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?
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What action should you take if a workmate gets an electric shock?
What action should you take if a workmate gets an electric shock?
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A residual current device is designed to operate in the event of one of the following:
A residual current device is designed to operate in the event of one of the following:
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Electrical installations on construction sites should be periodically inspected and tested:
Electrical installations on construction sites should be periodically inspected and tested:
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The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is:
The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is:
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Which of the following statements is true with regard to the dangers of electricity?
Which of the following statements is true with regard to the dangers of electricity?
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What is the most serious effect that electric shock can have if you come into contact with a live part?
What is the most serious effect that electric shock can have if you come into contact with a live part?
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Your job involves you working near to hanging electrical cables which have bare ends. What should you do?
Your job involves you working near to hanging electrical cables which have bare ends. What should you do?
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For all live working activities it is necessary to:
For all live working activities it is necessary to:
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An electrical Permit to Work is primarily a statement that:
An electrical Permit to Work is primarily a statement that:
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The probes of voltage detectors and test instruments used on electrical systems should be:
The probes of voltage detectors and test instruments used on electrical systems should be:
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Which of the following does the Electricity at Work (EAW) regulations apply to?
Which of the following does the Electricity at Work (EAW) regulations apply to?
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The Electricity at Work Regulations require that:
The Electricity at Work Regulations require that:
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The Electricity at Work Regulations apply to:
The Electricity at Work Regulations apply to:
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Which of the following should be used to prove a circuit or equipment is dead after isolation?
Which of the following should be used to prove a circuit or equipment is dead after isolation?
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Which of the following is NOT a suitable means of isolating a circuit?
Which of the following is NOT a suitable means of isolating a circuit?
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Which of the following work procedures on electrical systems will always require a permit-to-work to be issued?
Which of the following work procedures on electrical systems will always require a permit-to-work to be issued?
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Optical fibre cable remnants should not be left lying around on site because:
Optical fibre cable remnants should not be left lying around on site because:
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Why should the end of an optical fibre cable never be pointed towards your own or anyone else's eyes?
Why should the end of an optical fibre cable never be pointed towards your own or anyone else's eyes?
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The use of a multi-lock hasp with the appropriate number of padlocks is a recommended method of safe isolation where:
The use of a multi-lock hasp with the appropriate number of padlocks is a recommended method of safe isolation where:
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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?
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?
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Study Notes
Electricity at Work Regulations
- When considering live work, a risk assessment is crucial.
- Normally, working on electrical equipment should be done when it is dead.
- Live work should only be permitted in exceptional situations, and extra controls should be in place (e.g., training, supervision, and appropriate tools/equipment).
- Test instruments used for electrical systems should have insulated test probes.
- The nominal single-phase voltage in the UK is 230 volts.
- 110 volt power supplies are typically represented using yellow cables/equipment.
- Electrical installations need periodic inspections and testing (every 3 months is recommended).
- The maximum voltage a human body can withstand without long-term harm in dry conditions is 400 volts.
- Electricity is inherently dangerous, so always assume cables are live.
- Live electrical parts can be fatal.
- A residual current device (RCD) is intended to protect against electric shock.
- A permit to work is required for certain electrical work activities.
- A permit to work should explicitly state what equipment is safe to work on.
- If a workmate receives an electric shock, immediately cut off the power and call for help.
- Electrical tools/equipment should have high breaking capacity fuses to prevent damage/accidents.
- Competency is a requirement in electrical practices.
- Appropriate knowledge and experience is required for electrical work.
Safe Isolation
- Dead work is essential for electrical safety.
- Insulating gloves are generally only suitable for live work.
- Safe isolation requires identifying the correct isolation point.
- A caution notice should be applied at the point of isolation.
- Using a multi-lock hasp for the isolator is a good practice when multiple people work on a circuit. A padlock should be placed on the hasp for each operative working on the circuit. It should be locked until all individuals have completed their work on the circuit and removed the padlocks from the hasp.
Additional Safety Information
- Optical fiber remnants should be handled with care, as parts of the material may still cause danger. They should never be pointed towards anyone's eyes.
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