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Practical guidance

Electrical hazards are a major cause of death and serious injury on construction sites. This industry standard provides practical guidance to employers, designers, manufacturers, importers, suppliers (including hirers), electrical contractors and electricians on eliminating or reducing the risk of electrocution and electric shock to any person.

Electrical Installations On Construction Sites
Electrical Installations On Construction Sites (photo credit:

This industry standard applies to:

  • Fixed wiring,
  • Construction wiring,
  • Fixed and/or portable electrical apparatus,
  • Tools,
  • Appliances and
  • Associated flexible cords used in construction work.

Construction work referred to in this industry standard means the construction, renovation and demolition of all types of buildings and structures including residential buildings and any related excavation work.

Electrical curcuits

Circuit breakers

Circuit breakers provide protection against circuit overload and fire. Every final sub-circuit must be protected by a circuit breaker except final sub-circuits exceeding 50A, which may be protected with high rupturing capacity (HRC) fuses.

RCD to final sub circuits

An RCD is a ‘safety switch’ fitted to an electrical circuit to reduce the risk of electric shock or electrocution. Every final sub-circuit including lighting and socket-outlets must be protected by an RCD with a rated tripping current not greater than 30mA. This also applies to the final sub-circuits in transportable structures.

This requirement need not apply to final sub- circuits supplying equipment such as cranes or personnel lifts where interruption of supply is a risk to safety.

Title:Electrical Installations On Construction Sites – WorkSafe Victoria
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Electrical Installations On Construction Sites – WorkSafe Victoria
Electrical Installations On Construction Sites – WorkSafe Victoria

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  1. Lekeka Dennis
    May 13, 2021

    I found this documentation very much interesting and helpful

  2. Shrikant
    Jun 14, 2020

    An RCD is termed as a ‘safety switch’ which may – must not be correct. Any switch have only manual operation for ON or OFF i.e. without any protection. However, RCD trips during fault automatically.

  3. Charles Odoh
    Oct 11, 2019

    Great work here

  4. sherif elsayed
    Oct 09, 2019

    i like it but i really want to discuss another subjects

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    Mar 30, 2019

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    Mar 19, 2019

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  9. Suleman Ahmed
    Mar 11, 2019

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  10. David Skaggs
    Mar 15, 2017

    Very nice article informative content thanks we liked it.

  11. geronimo tise
    Dec 07, 2016

    hi.very good programs.keep it up

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