A simple and easy to follow video of how to replace a 2 gang. The loop at the switch method for wiring is more commonly used in the uk than in australia however it can still be found in some homes within australia.

Silicon Chip Online House Wiring Looking At Light Switches
Wiring a double light switch australia. The essence of the wiring configuration is for one hot feed wire entering the switch box to be split so that it feeds both switches which in turn feed hot wires in cables that lead out to two separate light fixtures. The colours for fixed wiring are red active black neutral and greenyellow for earth also white is used for switch wires. This is an updated version of the first arrangement. For example you might want to turn on a bathroom light separately from the ceiling fan. To wire a double switch youll need to cut the power remove the old switch then feed and connect the wires into the double switch fixture. Though it is not difficult to wire a double switch careful attention to safety is crucial to prevent injury.
The red and black are used for hot and the white neutral wire at the switch box allows for powering a timer remote control or other programmable switch. Of course there are many people who dont care that much it aint rocket science you wire it the same way basically as in any other country. It is not uncommon for a circuit to be configured so that two wall switches in a single double gang box control two different light fixtures. How to replace a 2 gang double light switch in new zealand subscribe and request a video. The principle behind this type of wiring is similar to that used in the previous method in that the cable supplies power from one light to the unit. In australia we use 15mm2 tps cable for lighting circuits.
I used the same brand of 2 gang for. As others have said you dont unless youre a licensed electrician if you care about the law. Partsam led truck bed light strips 8pods 6 5050 smd white led rear work box lighting kit waterproof led bed light for truck pickup cargo trailer rvs buy partsam led truck bed light strips 8pods 6 5050 smd white led rear work box lighting kit waterproof led bed light for truck pickup cargo trailer rvs. Because the electrical code as of the 2011 nec update requires a neutral wire in most new switch boxes a 3 wire cable runs between the light and switch. The loop at the switch method.