Elements and Performance Criteria
- Prepare to arrange electrical installations circuits, control and protection
- The extent and nature of the electrical installation is determined from job specifications.
- Safety and other regulatory requirements to which the electrical installation shall comply are identified, obtained and understood.
- Load requirements for individual current-using equipment is determined from job specifications or from consultation with appropriate persons.
- Arrange electrical installations circuits, control and protection
- Circuits, control and protective devices are arranged to ensure safe and functional operation of the installation and to comply with technical standards and job specifications and requirements.
- Earthing is arranged and terminated to comply with the MEN system requirements.
- Protective devices are selected to meet the required switching and tripping currents, co-ordination and discrimination for overload and short-circuit protection.
- Residual current devices are selected to meet the required circuit, switching and tripping currents required.
- Switchgear/control gear is selected to meet current, voltage and IP ratings and functional requirements.
- Switchboards are arranged to accommodate control and protective devices, links, safety services, and other distributor equipment in accordance with requirements.
- Document electrical installation circuits, control and protection arrangements
- Evidence is obtained from manufacturers/suppliers that electrical equipment selected complies with safety requirements.
- Reasons for selections made, including calculations, are documented in accordance with established procedures.
- Electrical installation arrangement and specifications for all selected items are documented in accordance with established procedures and forwarded to appropriate person(s).