Guinea-Bissau power converters - Do you need a converter for Guinea-Bissau?

What is a power converter for Guinea-Bissau?

Power converters for Guinea-Bissau enable travellers to use a 100-120 volt electrical device with a 220 volt Bissau-Guinean power outlet.

Also known as: electrical converter, electrical transformer, voltage converter, power transformer or voltage transformer.

What is the difference between a plug adapter and a power converter?

An expensive and bulky power converter [3] transforms the voltage of 220 volts from a Bissau-Guinean power outlet to work with a non-220 volt appliance, whereas a smaller and more lightweight power adapter (or plug adapter) will change the shape of the plug on your appliance to fit into a power outlet found in Guinea-Bissau.

Do I need a power converter for Guinea-Bissau?

When travelling to Guinea-Bissau from a different region ensure that the device can be used with a 220 volt power supply.

  • A step down power converter [4] is needed if you are travelling from a country that uses 100-120 volts and your appliance isn't compatible with 220 volts. Read the list of world power outlets guide to discover the voltage your country uses.
  • You won't need a power converter if you are already using either a 220 volt single voltage device or one that is dual voltage.
  • Normally devices which are designed to work with a lower voltage (such as 120 volts) and then used in a 220 volt outlet run the potential risk of an electrical fire hazard, a blown fuse or damage to your device unless a step down power converter [4] is used.
  • You shouldn't need a converter if you wish to recharge a smaller electrical device such as a tablet or cell phone as these are typically support dual voltage and designed for international use, however you should always check the device for dual voltage support first.
  • When supplying power to appliances which draw more power or generate heat (such as hair straighteners or clothes irons) then you will need to use a more expensive higher wattage heavy duty power converter [5].
  • It should be more cost effective to purchase a robust lightweight dual voltage travel appliance than trying to carry a much heavier power converter in order to use your existing domestic appliance.
  • Read our comprehensive guides on travelling with curling wands, clothes irons, hair straighteners and hairdryers with Bissau-Guinean power outlets , along with recommendations on affordable dual voltage alternatives.

Do I need a power converter if I'm visiting Guinea-Bissau from the US?

The 220 volts used in a plug outlet in Guinea-Bissau is different to a 110 volt US supply so you need to bring a step down power converter if your charger or appliance doesn't support dual voltage.

What converter do I need for Guinea-Bissau?

If you need to use any 100-120 volt appliance with a 220 volt Bissau-Guinean power outlet you will need to use a step down power converter [4].

What voltage is used in Guinea-Bissau?

Guinea-Bissau uses 220 volts in their power outlets.

How to convert 220 volts to 110 volts

  1. Use a step down power converter [4] to allow you to use a 110 or 120 volt appliance with a 220 volt Bissau-Guinean power outlet.
  2. If the power converter doesn't include the correct shaped plug then it will also be necessary to plug in the power cord from the power converter into a power adapter for Guinea-Bissau before plugging that into a Bissau-Guinean power outlet.
  3. Some power converters include the ability to perform both step up and step down voltage conversions, therefore it may be necessary to manually switch the converter to output the voltage to the 110-120 volt range.
  4. Plug your appliance into the converter and turn the power on, your 110-120 volt appliance can now be used with a 220 volt Bissau-Guinean power outlet.
What is the difference between a transformer and a power converter?

Voltage converter

What is the difference between a transformer and a power converter?

Converters and transformers are both used to change one voltage to another, but this ambiguity can cause confusion as their purposes are different:

  • Power converters are designed for simple electrical appliances which typically generate heat or use motors such as clothes irons, shavers or hair dryers. Transformers are designed for more complex electronic items such as televisions or games consoles.
  • Buying a power converter is cheaper than buying a power transformer.
  • Power transformers are larger and heavier making them more suited for permanent residential use; for example an expat wishing to use an imported television would need to use a transformer for this purpose.
  • Power converters are more suitable for travellers wishing to bring domestic appliances abroad such as hair dryers or flat irons. However, it is more practical and cost effective to purchase a dual voltage appliance designed for travel rather than a heavier power converter.
  • Power converters are suitable for 2 pin ungrounded appliances, it could be harder to find a converter if you want to use a grounded 3 pin appliance.
  • Transformers can be used constantly however it is recommended that converters are used for no longer than a couple of hours at a time.
  • Shops may sell transformers under the name of converters, for the purposes this guide we will be referring to both converters and transformers as converters.
What voltage is my device?

Single voltage hair dryer

What voltage is my device?

The best way to see if a device is dual voltage is to check for either a sticker or numbers printed on the charger or on the device itself, normally on the rear or near to where the power cord sits. The location might depend on the make or model of your appliance, it could also be written in the instruction manual.

  • Single voltage devices might have a specific number - such as 240V.
  • Single voltage devices might also have a small voltage range (20 volts difference) with a dash to accomodate small voltage fluctuations - such as 100-120V.
  • Dual voltage devices will typically say a larger voltage range separated with a slash - such as 110/240V.

  1. https://en.wikipedia.org/wiki/Guinea-Bissau - Bissau-Guinean country entry on wikipedia.
  2. http://www.iec.ch/worldplugs/ - International Electrotechnical Commission World Plugs
  3. Power converter - A step up step down power converter converts 110-120 volts up to 220-240 volts and 220-240 volts down to 110-120 Volts.
  4. Step down power converter - A step down power converter allows a 100-120 volt appliance to be used in a 220-240 volt power outlet.
  5. Heavy duty power converter - A 5000 watt heavy duty step up and step down power converter used to convert voltages for domestic appliances, power tools, televisions, heating appliances and motors.