a The spacings in this table are suitable between live parts and conductive non-current carrying parts separated by basic insulation only or between basically insulated conductive non-current carrying parts and accessible parts separated by supplemental insulation. Spacings between hazardous voltage parts and accessible parts requiring double or reinforced insulation will require that the values outlined in the table be doubled. Refer to Section 5.6 regarding required insulation levels.b Spacings at these voltages may be decreased from those indicated in the table if it can be determined through test or analysis that there is no hazard