BS PD IEC TR 63040:2016
Guidance on clearances and creepage distances in particular for distances equal to or less than 2 mm. Test results of research on influencing parameters
BS PD IEC TR 63040:2016 describes test results of research on dimensioning of clearances and creepage distances, for spacing equal to or less than 2 mm for printed wiring material and other equivalent arrangements of insulation, where the clearance and the creepage distance follows the same path along the surface of solid insulation.