You need an electrical licence before you can do any electrical wiring work in NSW, regardless of the cost of the work and regardless of whether the work is residential, commercial or industrial.
Electrical wiring work means the actual physical work of installing, repairing, altering, removing or adding to an electrical installation or the supervising of that work.
An electrical installation means any fixed appliances, wires, fittings, meters, apparatus or other electrical equipment used for (or related to) conveying, measuring, controlling and using electricity in a particular place. It does not include:
Remember, it is an offence to do electrical wiring work without a licence or certificate. You can be fined $22,000 as an individual or $110,000 as a company for doing unlicensed electrical work.
To learn more about what is considered electrical wiring work or an electrical installation, see the definitions used in NSW laws. For licensing purposes, electrical wiring work is defined in schedule 1 of the Home Building Act 1989 as having the same meaning as it has in the Gas and Electricity (Consumer Safety) Act 2017.
Also refer to the Australian/New Zealand Wiring Rules called AS/NZS 3000:2018, Electrical Installations, published jointly by Standards Australia and Standards New Zealand.