This unit involves the skills and knowledge required to install explosion-protected equipment and associated apparatus and wiring systems for hazardous areas. It includes understanding and applying the explosion-protection aspects of installing electrical equipment and wiring systems for hazardous areas; matching items of explosion-protected equipment with that specified for a given location; and complying with installation standards and retaining/completing the required documentation.

This unit applies to hazardous area electrical installation functions.

Site-specific work permits may be required to work in the hazardous environment. In addition, other permits may be required, such as confined space and to operate specific pieces of equipment such as elevated work platforms in various jurisdictions.

Additional and/or other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

This unit of competency and associated assessment requirements is adopted from clause 2.5 of AS/NZS 4761.1:2018 Competencies for working with electrical equipment for hazardous areas (EEHA). There may be differences between the content of this unit and AS/NZS 4761.1:2018, so the Standard must be checked to ensure compliance with it. Clause 2.5 of AS/NZS 4761.1:2018 includes the following precondition for assessment:

• “A candidate seeking assessment in this unit shall have been deemed competent to install electrotechnology equipment and wiring systems for non-explosive atmospheres at AQF level 3 or NZQF level 4.”