An electrical wire is an electrical conductor used to carry electricity from the main power source in an electrical circuit.
In Australia, there are several types of wiring that can be used for a particular purpose. You may use tinned copper wire or aluminium wire for wiring in your home. Copper wires have been considered preferable to aluminium wiring because they have lower resistance and their voltage drop is less when carrying current along them. As per the latest predictions, the price of 0 to 2mm (1/0) PVC Sheathed Copper Wire costs around $19 to $25 per kilogram, while the price of 0 to 6mm2 (4/0) PVC Sheathed Aluminium Wire costs around $3 to $5 per kilogram. If you choose structured wiring for the communication appliances, the average cost for your electrical work will rise.
When wiring an entire house, you are required to take into account the cost of electrical wire, cable tray system, the electrical panel, electrical boxes, lighting fixtures, ceiling roses/fans, etc. The electrical wiring costs may vary depending on the amount of copper wiring used in your new house.
You need to know how much your budget would allow you to spend on this project before choosing the right electrical services provider. Typically, an electrical wiring installation for a modern three-bedroom home in Australia would, on average, cost around $3,000 to $5,000 to rewire. Best to check with an electrician for an accurate quote.The electrician's hourly rate is around $130 to $220 for labour charges (minimum 1 hour).
PVC is a thermoplastic polymer used for the insulation and protection of electrical wires. It has high electrical resistance and strength. Rubber insulation: Rubber was earlier considered an insulator because it is resistant to heat and also flame-retardant in nature. However, when rubber cables are subjected to higher voltages, they can become dangerous due to their low melting point (around 100 degrees Celsius).
The flexible armoured cable consists of two or more conductors with armouring material around them, wrapped in an electrical tape or wire braid covering. The function of this wire type is not only to provide physical protection against damage but also to act as an earthing conductor during emergencies. It has high voltage resistance compared to PVC insulated wires.
These are the basic types of electrical wires that consist of two insulation layers with an air gap between them, which helps prevent electrical shocks. The outer layer is typically made up of rubber or plastic, and the inner core is usually made up of bare copper wire. They are easy to install because there is no requirement for termination, but they cannot be used outdoors as they are not weather-resistant.
Cable tray systems carry power cables along walls or ceilings without causing any damage to the structure. Some of these systems include adhesive tapes that allow fixing on surfaces without using tools. Stand-alone cable trays can be bought for around $20.
Most of us think that a rewiring project is expensive, but it is worth considering this option because wires in the house are subjected to strain, mainly due to frequent use. Rewiring helps replace old or damaged existing wiring with new ones according to safety requirements.
Good installation plan
Electrical wire
Cable tray system
Ceiling roses
Light switches and socket outlets
Testing equipment (voltmeter)
You may need several other items depending on your requirement. They include cable terminations, conduits, boxes, etc. Older houses with knob and tube wiring will require a new electrical service panel. Electricians help you purchase these items if required. A good electrician provides inspection of all the existing wires in the house and determines which ones need to be replaced. If your certified electrician is doing a good job, you won't worry about the rewiring costs.
It ensures safety for family members
Provides better efficiency of electrical appliances
Saves energy bills by reducing electrical outlet voltage leakage through old wires
No problems related to short circuits or blackouts
Upon successful completion of the work, the electrician should issue a compliance certificate as confirmation that the wiring system meets the common electrical codes requirements.
Cable trays are designed to protect power cables from getting damaged or exposed. This tray system consists of metal sheets that are either suspended over the ceiling or fastened permanently to walls. The role of cable tray systems is not just limited to holding cables but also to make sure that they are fixed securely.
You may think of saving money by doing this work yourself but before you try anything, think about your safety. Rewiring involves working with electricity at high voltages; therefore, always make sure that an expert is involved in the process. Work with a licensed professional if you think you can do it yourself.
If you are experiencing problems using appliances like ovens, washing machines, light fixtures, etc
Frequent power cuts/blackouts
Fuses keep blowing for no reason, noises or smell of burning wires from electrical outlets
Wiring has visible damages or corrosion
Cables with abnormal warmth or heat pose a fire hazard
Degraded wiring, few socket outlets leading to overuse of extension cords, damaged switch plates
Outdated wiring
If your house is more than 20 years old, then it might need an electrical inspection to assess if the electrical system still satisfies the Australian electrical standards.
It is not just about rewiring but also about preventing accidents that may be caused due to faulty electrical wiring. When rewiring an older home, electricians recommend using copper wires because they are highly durable and easy to install compared to other options available in the market today.
The NSW Department of Fair Trading has a guide to electrical standards and mandatory wiring rules. Check to see if any laws apply to your local area.