# Electricity 220 vs 110

**URL:** <https://boards.straightdope.com/t/electricity-220-vs-110/422737>\
**Category:** Factual Questions\
**Created:** [October 15, 2007, 1:07am UTC](https://boards.straightdope.com/t/electricity-220-vs-110/422737 "2007-10-15T01:07:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sweetbird](https://avatars.discourse-cdn.com/v4/letter/s/94ad74/32.png) [@Sweetbird](https://boards.straightdope.com/u/Sweetbird)\
**Post date:** [October 15, 2007, 1:07am UTC](https://boards.straightdope.com/t/electricity-220-vs-110/422737/1 "2007-10-15T01:07:41Z")

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I live in Europe where the electricity is 220. To use my electric curlers from the states I have to use a transformer for 110. OK. If I want to take my European appliances back to the states, such as this really cool desk lamp, how can I change them or gut them to work on 110? Do I always have to use a transformer both ways?