What size cable should I use?

When it comes to selecting the right size cable for a circuit or an appliance there are a number of things to consider. Each appliance such as a dryer or a washing machine come with a kW rating. With knowing this kW rating and the supply voltage, we can work out the current that will be used with the formula Power = Voltage x  Current.

Once we know the current we can determine what size cable is suitable from Australian Standard 3008. Depending on how the cable is run will determine its Current Carrying Capacity. Factors such as being surrounded by thermal

Once we know the current we can determine what size cable is suitable from Australian Standard 3008. Depending on how the cable is run will determine its Current Carrying Capacity. Factors such as being surrounded by thermal insulation will derate the current-carrying capacity of the cable because of the increased temperature.

For further information contact Mark Brown Electrical on 1300 72 7798.

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