Every country has its own way of connecting devices to the wall, and if you have travelled much or moved countries, you know the frustration of a plug that does not fit. There are 15 official plug types worldwide, each with different pin shapes, safety features, and quirks.
This guide maps out the major types, explains where Singapore's Type G fits in the global picture, and gives you the practical knowledge to handle any plug compatibility situation.
Major plug types worldwide
The US International Trade Administration (ITA) classifies plug and socket types using letters A through O, while the International Electrotechnical Commission (IEC) uses its own numerical scheme under IEC TR 60083 / CEE 7. Here are the types you are most likely to encounter.
Type A: two flat parallel pins Used in: USA, Canada, Mexico, Japan, Taiwan, parts of Central and South America Voltage: 100V to 127V No earth connection. The simplest and one of the oldest plug designs still in wide use.
Type B: two flat pins plus round earth Used in: USA, Canada (for earthed circuits) Voltage: 100V to 127V Same as Type A with an added earth pin. Required for circuits that need earthing in North America.
Type C: two round pins (Europlug) Used in: Most of Europe, South America, parts of Asia Voltage: 220V to 240V The universal European plug for small appliances. No earth connection. Lightweight and compact.
Type E: two round pins with socket-mounted earth pin Used in: France, Belgium, Poland, Czech Republic, Slovakia Voltage: 220V to 240V The French standard (CEE 7/5). Earth connection comes from a pin protruding from the socket that enters a hole in the plug. Type E and Type F are bridged in practice by the hybrid CEE 7/7 plug, which fits both.
Type F: two round pins with earth clips (Schuko) Used in: Germany, Spain, Netherlands, Austria, Indonesia, South Korea, and much of Europe Voltage: 220V to 240V The standard earthed plug across much of continental Europe. Earth connection via clips on the plug housing that contact earth springs in the socket. Type F plugs can fit French Type E sockets via the hybrid CEE 7/7 plug.
Type G: three rectangular pins Used in: Singapore, UK, Malaysia, Hong Kong, UAE, and approximately 50 countries Voltage: 230V The plug you see every day if you live in Singapore. Built-in fuse, safety shutters, insulated pin bases. Widely regarded as one of the safest designs.
Type I: two angled pins plus earth Used in: Australia, New Zealand, China, Argentina Voltage: 220V to 240V The angled flat pins are distinctive. Australia and China share this type, though Chinese sockets sometimes accept Type A and Type C as well.
Type D: three large round pins Used in: India, Nepal, some African countries Voltage: 220V to 240V An older British standard (BS 546) that predates Type G. Still common in India and the Indian subcontinent.
Singapore's Type G in detail
Singapore's Type G (BS 1363) is worth understanding beyond just the pin shape, because it has several safety features that set it apart from most other plug types.
Internal fuse: Every Type G plug contains a cartridge fuse, typically rated at 3A or 13A. This fuse protects the individual appliance and its cable. If a fault develops, the fuse blows before the cable overheats, providing protection beyond what the circuit breaker in your distribution board offers. No other widely used plug type has this feature.
Safety shutters: Type G sockets have spring-loaded shutters covering the live and neutral openings. These shutters only open when the longer earth pin is inserted first. This means a child cannot push a finger or object into the live opening without first inserting something into the earth opening, which carries no voltage.
Insulated pins: The live and neutral pins are partially sleeved in insulation near their base. Even when the plug is partially withdrawn from the socket, the exposed portion of the pin is insulated, preventing accidental contact with the conducting metal.
Mandatory earth pin: Even on double-insulated (Class II) appliances that do not need an earth connection, the Type G plug must have an earth pin (which may be plastic) to operate the socket's safety shutters.
These features make the Type G plug one of the safest in the world, though its relatively large size compared to types like the Europlug is the trade-off for that safety. For detailed coverage of the Type G standard, see our Singapore plug type guide.
Compatibility table
This table shows which plug types work directly in Singapore and which need adapters.
| Your plug type | Countries | Fits SG socket? | Voltage match? | What you need |
|---|---|---|---|---|
| Type G | UK, Malaysia, HK | Yes | Yes | Nothing |
| Type C | Europe (most) | No | Yes (230V) | Plug adapter only |
| Type E / F | France, Germany, Spain | No | Yes (230V) | Plug adapter only |
| Type A | USA, Japan | No | No (120V) | Adapter + check voltage |
| Type B | USA, Canada | No | No (120V) | Adapter + check voltage |
| Type I | Australia, China | No | Yes (230V) | Plug adapter only |
| Type D | India | No | Yes (230V) | Plug adapter only |
For 230V countries, you need only a plug adapter. For 120V countries, you also need to check whether your device is dual-voltage (100-240V) before plugging in. See our Singapore voltage guide for details.
Travel adapter recommendations
If you travel frequently, here is what to consider when choosing adapters.
For occasional travel: Buy a dedicated single-type adapter for your most common destination. Type C to Type G and Type A to Type G adapters are cheap, compact, and provide the most reliable fit.
For frequent multi-country travel: A quality universal adapter saves carrying multiple adapters. Look for models from SKROSS, Allocacoc, Ceptics, or Mu, which have safety certifications and sliding mechanisms that secure the connection.
For setting up a new home in Singapore: Rather than collecting adapters, consider replacing appliance plugs with Type G plugs (follow our 3-pin plug wiring guide) or having European or other socket types installed alongside your standard outlets.
What to carry: One adapter per device is the safe approach for short trips. For longer stays, one adapter with a power strip from your home country gives you multiple outlets from a single adapter.
Safety considerations for multi-type sockets
Some products sold as "universal sockets" or "multi-type sockets" accept multiple plug types in a single socket opening. While these can seem convenient, they have safety implications.
The problem with multi-type sockets is that to accommodate different pin sizes and configurations, the socket openings must be larger and the internal contacts must be more flexible. This can result in looser connections, which means higher resistance, more heat generation, and reduced safety compared to a dedicated single-type socket.
Singapore's Type G socket is designed specifically for the Type G plug, with tight tolerances that ensure firm contact. When you use an adapter, you introduce one additional connection point but maintain the Type G socket's designed contact quality.
Multi-type sockets, by contrast, compromise the contact quality for every plug type they accept. They also typically lack the safety shutters that Type G sockets include.
For these reasons, if you need to use foreign appliances regularly, installing dedicated socket types (European, Australian, or other) alongside your Type G sockets is safer and more reliable than using multi-type sockets. Our electrical outlet and switch installation services can install any socket type in your home.
Frequently Asked Questions
How many types of electrical plugs exist?
There are 15 officially recognised types, designated A through O. The A-O letter system is maintained by the US International Trade Administration; the IEC uses a separate numerical scheme under IEC TR 60083 / CEE 7. By country count, Type A/B is used in roughly 60 countries, Type C/F in around 70, and Type G in approximately 50. Despite discussions about global standardisation, no universal type has been adopted due to the cost of replacing installed infrastructure.
What countries use the same plug as Singapore?
Singapore uses Type G (BS 1363), shared with the UK, Malaysia, Hong Kong, UAE, and approximately 50 countries. The standard traces back to British colonial influence. These countries retained the Type G standard because replacing electrical infrastructure would be impractical. See our Singapore plug type guide for more.
Can I use a European appliance in Singapore?
Yes. Both regions use 230V, 50Hz. You need only a plug adapter (S$5 to S$15) to change the plug shape. For long-term use, consider replacing the plug or installing European sockets. See our guide on European plugs in Singapore.
What is the safest type of power adapter?
One with safety certification (Singapore Safety Mark, BS 1363, CE), solid brass or nickel-plated pins, a secure fit, and a 13A rating. Dedicated single-type adapters provide a more secure fit than universal models. Avoid unbranded adapters with thin pins or loose connections.
Are multi-country adapters safe to use?
Quality models with sliding mechanisms from reputable brands (SKROSS, Allocacoc, Ceptics) are safe. Avoid designs that expose all plug openings simultaneously. Check the current rating: some universal adapters are rated below 13A and cannot handle high-power devices.
Do I need a surge protector with an adapter?
Not strictly necessary for basic use, but worthwhile for expensive electronics. Singapore has high lightning activity. A surge protector (S$15 to S$100) with at least 1,000 joules protects computers and audio equipment. Our electrical installation services can install whole-house surge protection at the distribution board.
What plug type does Singapore use for high-power appliances?
Standard household appliances use Type G (rated to 13A, approximately 3,000W). Appliances exceeding 3,000W (ovens, hobs, EV chargers) are hardwired to dedicated circuits by a Licensed Electrical Worker. Our outlet and switch installation services cover all connection types.
Stay powered anywhere
Understanding plug and socket types takes the guesswork out of travel and international moves. Singapore's Type G standard keeps things simple for anyone from a Type G country, and for everyone else, the right adapter gets you connected in seconds.
For permanent electrical work in your Singapore home, including installing additional socket types, dedicated circuits, or surge protection, our electrical installation services cover every aspect of residential electrical work.
