mˈoʊst mˈeɪnzpˈaʊɚd ᵻlˈɛktɹɪkəl ɪkwˈɪpmənt, ðˌoʊ ɪt mˈeɪ spˈɛsᵻfˌaɪ ɐ sˈɪŋɡəl nˈɑːmɪnəl vˈoʊltɪdʒ, ˈæktʃuːəli hɐz ɐ ɹˈeɪndʒ ʌv tˈɑːlɚɹəns əbˌʌv ænd bᵻlˌoʊ ðæt pˈɔɪnt.
Most mains-powered electrical equipment, though it may specify a single nominal voltage, actually has a range of tolerance above and below that point.