Type G Plugs and 230 Volts: Singapore's Electrical Setup

Type G Plugs and 230 Volts in Singapore Explained

You are standing in the 24-hour Mustafa Centre aisle at 2am holding a hair straightener and a universal travel plug. The girl at the counter has seen this exact look a hundred times tonight. Here is what you need to know before you pack.

Singapore uses the Type G socket. Three rectangular pins in a triangular pattern. Mains voltage is 230 V at 50 Hz. Identical to the United Kingdom and Ireland. If your device has a UK plug it will fit a Singapore socket without any adapter. The socket has a rocker switch. Flip it to ON, marked with a red I. Power will not flow otherwise. That little switch catches out more travellers than the voltage does.

What Happens When You Plug in a North American Device

Check the Label Before You Plug In

North America runs on 120 V at 60 Hz. Japan runs on 100 V at 50 or 60 Hz depending on the region. Plug a 120 V only appliance into a 230 V Singapore socket and you destroy it. The circuit breaker may trip. The device will not work again.

Check the input label on every device. Look for the text "100 240V" or "110 240V" followed by "50/60Hz". That is the dual-voltage mark. Most phone chargers, laptop power bricks, camera battery chargers and USB chargers carry it. They work in Singapore with nothing more than a plug adapter that converts your prongs into the Type G shape.

Hair dryers, hair straighteners, curling irons, clothes irons, electric shavers and kitchen appliances usually do not carry this label. They are single voltage. Rated 110 120 V only. A plug adapter alone is not enough. You need a voltage converter. Or buy a locally rated version at a store in Singapore.

Hotel USB Ports and Public Charging Points

Where You Can Charge for Free

Three-star hotels and above in Singapore commonly include USB-A ports in the bedrooms. Hostels and budget guesthouses do not guarantee them. If you are staying in budget accommodation, bring a plug adapter.

Changi Airport has free USB-A ports in all terminals, both airside and landside. Charge before you clear immigration. Newer public buses have USB-A ports on board. MRT trains are inconsistent. Some newer trains on the North South, East West and North East Lines have them. Older trains do not. MRT stations themselves rarely have charging points. Do not plan to charge your phone between trains.

Devices That Need a Plug Adapter Versus a Voltage Converter

The difference is straightforward. A plug adapter changes the shape of the prongs. It does not change the voltage. A voltage converter changes 230 V down to 110 120 V. You need one only for devices that cannot handle 230 V. The table below shows which devices fall into each category.

Where to Buy an Adapter in Singapore

Late-Night Arrivals: Go to Mustafa

Forget to pack one? Mustafa Centre in Little India is a 24-hour department store that sells basic Type G plug adapters. This is your cheapest option if you arrive late at night. Changi Airport electronics stores and 7-Eleven outlets sell them too, at a higher price for the convenience of buying airside or landside.

Daytime Shopping: Sim Lim and the Malls

Sim Lim Square near Rochor Canal Road is the electronics mall. Dozens of stalls sell adapters and converters. Challenger stores in the big shopping malls also carry them. FairPrice Xtra hypermarkets stock basic adapters in the electronics aisle. Universal travel adapters with multiple plug types are available across all these outlets.

Buy the adapter before you leave the luggage carousel if you are arriving after 10pm. Most specialist electronics shops close by 9pm. Mustafa Centre stays open. Changi convenience stores stay open. The hardware shops in HDB estates do not.