The lightning channel has a diameter of 5 mm, never more 10 mm (even in the case of the most powerful discharges, where appear a peak currents only a little less one million amperes, see professional literature).
channel umeme ina kipenyo cha mm 5, 10 mm zaidi kamwe (hata katika kesi ya yanayovuja nguvu zaidi, ambapo mikondo Onekana kilele na tu kidogo kidogo milioni moja amperes, angalia maandiko ya kitaalamu).