500 watts. According to the inquiry of official website of Capital Normal University, the power of the dormitory of Capital Normal University is limited to 500 watts, which means that the electrical appliances used in a dormitory can't add up to 5ow, otherwise it will trip. Capital Normal University, formerly known as Beijing Normal University, was founded in 1954. It is a "double-class" university jointly established by the Ministry of Education and the Beijing Municipal People's Government.