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Electrical risk: contact, PES-PAV and safe work

de Quizhat · 13 perguntas · Atualizado · CC BY

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For workers and maintenance staff, in specific training: arts. 80-87 and annex IX D.Lgs. 81/08, standards CEI 11-27 and CEI EN 50110, D.P.R. 462/2001. 13 questions, about 9 minutes. Translated from Italian: legal references remain the Italian ones (D.Lgs. 81/2008) Sources: D.Lgs. 81/2008 arts. 80, 82, 83; D.M. 388/2003; CEI 64-8; CEI 11-27 · Reviewed 21/10/2026 · Training support, not a certification.

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Perguntas do quiz

Pergunta 1 · Escolha única · 30s · 1 pt

What is direct contact?

  • Contact with a part of the installation that is normally live, such as a bare conductor
  • Contact with a switched-off cable
  • Contact with equipment with a flat battery
  • Contact with an exposed conductive part that has become live because of a fault

Pergunta 2 · Escolha única · 30s · 1 pt

What is indirect contact?

  • Contact with a live bare conductor
  • Contact with lightning at a distance
  • Contact through the telephone
  • Contact with a metal exposed part that has become live because of an insulation fault

Pergunta 3 · Escolha única · 30s · 1 pt

What is the main protection against indirect contact in building installations?

  • The danger sign
  • Cotton gloves
  • The earthing system coordinated with residual current circuit breakers
  • The fuse of the power strip

Pergunta 4 · Escolha única · 30s · 1 pt

Which effect of electric current on the body is the most frequent cause of death in electrocution?

  • Hearing loss
  • Dermatitis
  • Ventricular fibrillation
  • Itching

Pergunta 5 · Escolha única · 30s · 1 pt

A colleague is stuck to a live cable. What do you do?

  • Cut the power or, if that is not possible, move them away with an insulating object, without touching them directly
  • Throw water on them
  • Wait for them to let go on their own
  • Pull them away with your hands

Pergunta 6 · Escolha única · 30s · 1 pt

According to standard CEI 11-27, what is a PAV?

  • A person assigned to display screen equipment
  • An instructed person (persona avvertita), adequately informed by skilled persons to avoid the dangers of electricity
  • A person authorised to supervise the site
  • The supervisor (preposto) for electrical oversight

Pergunta 7 · Escolha única · 30s · 1 pt

Who assigns the PES or PAV qualification to the worker?

  • The municipality
  • The ASL, through an exam
  • The employer, by assessing their training and experience
  • The worker themselves, with a self-declaration

Pergunta 8 · Escolha única · 30s · 1 pt

What does art. 82 of D.Lgs. 81/08 establish for live working?

  • It is always allowed for those who wear insulating gloves
  • It is allowed for anyone below 1000 V
  • It is allowed only at night
  • It is forbidden, except for exceptions such as safety voltages or work carried out according to technical standards by suitable personnel

Pergunta 9 · Escolha única · 30s · 1 pt

What is the minimum distance from unprotected overhead power lines with a voltage up to 1 kV (table 1 of annex IX)?

  • 7 metres
  • 3 metres
  • 1 metre
  • 5 metres

Pergunta 10 · Escolha única · 30s · 1 pt

What is the correct sequence for de-energising an installation before working on it?

  • Disconnect, prevent reclosing, verify absence of voltage, earth and short-circuit, protect against adjacent live parts
  • Earth, then disconnect, then verify
  • Disconnect and start work immediately
  • Verify absence of voltage, then disconnect, then earth

Pergunta 11 · Escolha única · 30s · 1 pt

How often must the earthing systems of a construction site be checked (D.P.R. 462/2001)?

  • Every 5 years
  • Every 10 years
  • Every year
  • Every 2 years

Pergunta 12 · Verdadeiro / Falso · 20s · 1 pt

A 30 mA residual current circuit breaker makes the earthing system unnecessary.

  • True
  • False

Pergunta 13 · Múltipla escolha · 45s · 1 pt

Which behaviours are correct with electrical equipment? (2 answers)

  • Do not use appliances with damaged cables and report them
  • Plug several power strips into each other in a chain
  • Unplug by gripping the plug, without pulling the cable
  • Use electrical appliances with wet hands, if the voltage is 230 V

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