Lexi Webster
If you're travelling from the US to Australia, you'll need to be aware of the different power outlets and voltages used in the two countries. American plugs won't fit into Australian power outlets, so you'll need to use a plug adapter. Additionally, the voltage in Australia is 230V, while the US uses 120V, so you may also need a voltage converter to protect your devices. Some modern devices can switch automatically to the network voltage and will work fine without a converter. However, for devices with specific voltage requirements, such as motorized devices and those containing electronic chips, you'll need to be cautious and may require a converter. You can find combined travel adapter/voltage converter options online or at electronics stores.
| Characteristics | Values |
|---|---|
| Plug types in the US | A and B |
| Plug types in Australia | I |
| Voltage in the US | 120V |
| Voltage in Australia | 230V |
| Frequency in Australia | 50Hz |
| Converter required | Yes |
| Adapter required | Yes |
| Combined adapter/converter | Available |
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What You'll Learn
You will need a power plug travel adapter
If you're travelling from the US to Australia, you will need a power plug travel adapter to be able to plug in your devices. Power outlets in Australia are of Type I, which have two diagonal slits and one vertical slit, whereas in the US, plugs are Type A and B. Therefore, you will need a power plug adapter that can convert Type A/B to Type I.
A power plug adapter will change the shape of your plug to fit into an Australian power outlet. However, it will not change the voltage, so you will also need a voltage converter. The standard voltage in Australia is 230V, whereas in the US it is 120V. This is a substantial difference, and without a converter, you risk damaging your devices.
Some modern devices will switch automatically to the network voltage and will not need a converter. If the label on your device states 'INPUT: 100-240V, 50/60 Hz', it can be used in every country. Devices with chargers, such as tablets, laptops, phones, and toothbrushes, will only need a power plug adapter.
You can buy a combined travel adapter and voltage converter, or you can purchase them separately. You can find suitable adapters and converters on Amazon.
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The standard voltage in Australia is 230V
In 2000, Standards Australia issued a system standard, AS60038, with 230 V as the nominal voltage with a +10% to -6% variation at the point of supply, i.e., 253 V to 216.2 V. A new power quality standard, AS 61000.3.100, was released in 2011, which stipulates a nominal 230 V, and the allowable voltage to the customer's point of supply is +10% to -6%. However, the preferred operating range is +6% to -2% (244 V–225 V).
Australia operates on a 230V, 50Hz electrical system, which means that the standard voltage supplied to homes and businesses is 230 volts, and the electricity alternates at a frequency of 50 cycles per second. Residential buildings in Australia typically use a single-phase power supply, which provides 230V through a single live wire and a neutral wire. This system is sufficient for most household appliances and lighting needs and is delivered through standard three-pin main plugs and sockets.
If you are travelling from the United States to Australia, you will need to invest in an adapter to charge your electronics. American electronic devices rated to 50 Hz and between 220 and 240 V will work with the correct US-to-Australia power adapter. You can also use a step-down voltage converter, which can be plugged into 120 volts and provides an outlet with 230 volts for your Australian device.
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US voltage is 120V
The US voltage standard is 120V, with a frequency of 60Hz. This is lower than the voltage in Australia, which is 230V, with a frequency of 50Hz. This means that Australian devices will not work with American outlets without an adapter or converter.
The US voltage standard of 120V came about due to its initial association with carbon filament lighting. Thomas Edison's first successful incandescent lightbulb, tested in 1879, used a coiled carbon filament connected to platina contact wires. Later, a metal filament was created, which could be used for more efficient power distribution systems using 220V. However, by this time, the US power grid was already largely established using 120V infrastructure, so there was no incentive to switch to a new, higher-voltage system.
The US is not the only country to use 120V; Canada, Mexico, and several other countries also use this voltage standard. Technically, the US and these countries are on a 240V distribution system. All residential and commercial power in the US is provided with two 120V conductors and one neutral conductor. When the load is applied from one 120V lead to the neutral, you get 120V. However, when the load is applied from one 120V lead to the other, the voltage combines to produce 240V. This higher voltage is used for larger appliances, such as residential kitchen ovens, clothes dryers, and water heaters, and power tools.
While the US voltage standard is lower than that of many other countries, modern low-power devices are often capable of auto-detecting and adapting to different voltages. For example, mobile phone chargers and laptop chargers are usually multi-voltage. However, high-power devices, such as hair dryers, baby bottle warmers, and kettles, typically work on only one voltage system due to the high currents involved. Therefore, when travelling between countries with different voltage standards, it is important to check the voltage requirements of your devices and use appropriate adapters or converters to avoid damaging your electronics.
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You may need a voltage converter
If you are travelling from the US to Australia, you will need a power plug travel adapter for sockets in Australia. The power sockets in Australia are of type I, whereas the plugs in the US are type A and B. However, you may also need a voltage converter. The standard voltage in Australia is 230V at a frequency of 50Hz, whereas the US voltage level is 120V. A voltage converter will ensure a safe input voltage level for your devices in Australia.
You can find voltage converters at Amazon, and you may want to purchase a combined plug adapter/voltage converter. Be sure to pay attention to the maximum power output of the converter and the maximum power consumption of the device. It is also important to check if your converter can change the frequency. If it cannot, it is not advisable to use your devices. If you do decide to use your devices (at your own risk), exercise caution with motorized devices and those containing electronic chips, such as clocks, shavers, and medical devices.
Most modern electronic devices have switched mode power supplies that are compatible with a wide range of voltages. If your device supports 220V 50Hz, you just need to use the correct cable adapter. If the device supports a range of inputs, such as 100-240V/50-60Hz, it will work with just a plug adapter in Australia. However, larger wattage devices such as kitchen appliances may require a converter to 120V 60Hz, or it may be better to obtain appliances made specifically for the local market.
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Check if your device is dual voltage
To change an American outlet to an Australian one, you will need a power plug adapter for sockets of type I, which are used in Australia. You will also need a voltage converter as the standard voltage in Australia is 230V, whereas in the US it is 120V.
Now, to check if your device is dual voltage and whether you need a converter, look at the power label on the device. If it says 'INPUT: 100-240V, 50/60Hz', then it is dual voltage and you can use it in every country in the world with just a plug adapter. Devices with this input include tablets, laptops, photo cameras, cell phones, and toothbrushes.
If the power label on your device says something like 100/240V (V=voltage) or 110~220V AC (V AC=volts, alternating current), then it is also a dual voltage device. Many digital dual-voltage devices will adjust automatically. Some dual voltage devices have settings, so be sure to switch it to the correct V before using it.
If the power label on your device says something like 110V AC or 120V AC, then it is a single voltage device. Single voltage devices require a plug adapter and a voltage converter and/or a transformer for international travel.
To determine the model of the converter you'll need, you must figure out the wattage of your device. You can find this information on the indications label of your device. Then, purchase a converter with a wattage rating that is two to three times higher than your device. For example, for an appliance rated at 400 watts, you should get a converter that is at least 800 watts.
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Frequently asked questions
Australia uses Type I power outlets, which have two diagonal slits and one vertical slit.
The US uses Type A and Type B power outlets.
You will need a power plug adapter to change the shape of the plug. If your device is not dual voltage, you will also need a voltage converter to change the voltage from 120V to 230V.
