No. All electrical works for public should be carried out by a licensed electrician under an electrical contractor in WA. Any work carried by non electricians will be considered illegal and Home Insurance will not cover the faults or fire caused by that. Only globes can be replaced by anyone. Electrical work – includes replacing light fittings, switches or power points.

When getting electricians for your home consider checking their electricians license

RCDs can trip due to several reasons including overload, electric shock, faulty RCD, moisture inside appliances , lights, powerpoints or faulty appliances

What can you do before calling an electrician?

Try resetting the RCD by pushing the lever to ON and see if stays on
If not Unplug all appliances plugged in to the power points and try resetting
May be the appliances were faulty or there was a nuisance tripping , you will be able to eliminate those faults and the power is restored
If you tried both of the above and still its not working, call an electrician

LED is the new technology in lighting which is being used everywhere because of its low power consumption, long life, safety from high temperatures and ease of maintenance. With no doubt we can replace all existing downlights to LED.

Sizes of these downlights vary. The standard ones used are with cutout size of 90mm, 85mm and 70mm. Before purchasing new ones you need to check the cutout size of old ones.

Wattage – LED Downlight with 10 watts is comparable to a 50 watts halogen downlight. Just by replacing a halogen downlight to LED downlight you can save around 5 times power saving on each light

The number of lights required depends on variety of factors.
Some of them are-
Size and height of the room– Normally for a room of 4×4 m² with a ceiling height of 2.5 m you need 4 downlights of 10watts for good lighting. As the height and size of the room increases the light intensity also reduces.
Individuals requirement– Some people like little light and some people like real bright light all the rooms. So you can go from 1 to 5 lights for a 4 m² room.
Light intensity – This depends on the wattage and lumens of light they give out. For a 10 watts light normally we can expect around 900 lumens. This varies from manufacturers of light.
Colour of the room – the painting of the room also plays an important role in the lighting of the room. More darker the colour, the light looks dull. This means white colour will be the brightest for the same light used at both places.
An electrician will give you a better idea and estimate of the amount of lights required.