• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • When Can You Use a Travel Adapter?

    April 21st, 2022
    power, travel
    We're currently in the UK, where outlets look like:

    Since we're from the US, none of the gear we have will plug into these sockets. What if we use a travel adapter?


    plug intentionally partially inserted to show pins

    This accepts the pins from a US plug, and connects them directly to pins shaped for a UK socket. Is this enough? Sometimes yes, sometimes no.

    The big difference between residential power in the UK and the US is that the UK uses 230V while the US uses 120V. If a device that expects 120V gets 230V it might get fried; the other way around is less likely to destroy the device but still won't work. Luckily, devices say what voltages they accept. Either they'll be labeled for a single voltage, or a range. Some examples, with whether they'll work in the UK:


    110-120V: no


    100-240V: yes


    100-240V: yes


    100-240V: yes


    120V: no


    100-240V: yes

    A good heuristic is that most external power supplies/chargers (for laptops, phones, tablets, ...) will take a wide range of voltages while most other things (nightlights, blenders, TVs, fans, ...) will be either 120V or 230V. But best to check your specific device!

    In bathrooms you may find one other type of outlet:

    These exist because you'd risk electrocution with a regular outlet in a wet area like a bathroom. In the US we'd use a GFCI, but in the UK they use isolation transformers. Because it's a transformer, it's cheap to add a center tap and get half the input voltage (115V). They generally do not produce much power: UK ones are only rated for 200mA (4.6W) and if you draw much more than that you'll trip a built-in fuse. If you do have a small US device and no adapter, don't mind connecting it in a bathroom, and the device says it draws less than 200mA/4.6W and doesn't have strong frequency preferences (it will be 50Hz instead of 60Hz) you could probably use it for something other than a shaver.

    Comment via: facebook, lesswrong

    Recent posts on blogs I like:

    Futurist prediction methods and accuracy

    I've been reading a lot of predictions from people who are looking to understand what problems humanity will face 10-50 years out (and sometimes longer) in order to work in areas that will be instrumental for the future and wondering how accurate thes…

    via Posts on September 12, 2022

    History of group sleeping

    Not as normal as it once was The post History of group sleeping appeared first on Otherwise.

    via Otherwise August 10, 2022

    On the Beach

    I really like going in the water and this beach is a great place for building sand castles and boogie boarding. I also like trying to float on top of big waves. I'm not very good at it. I only float on the flat waves.

    via Anna Wise's Blog Posts July 12, 2022

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact