CONTINUITY OF COVERING FOR ENAMELLED ROUND COPPER WINDING WIRES 
(BASIS : IS 13730 - .. & IS 13778 - 5)
Nominal Conductor
Diameter
Pulley Arrangement Test Voltage
Volts (D.C.)
Permissible Faults
per 30 meters
(mm) (SWG)
Over up to &
including
From To Grade 1  Grade 2  Grade 3 Grade 1  Grade 2  Grade 3
0.050 0.080 47 45   250 500 750 60 24 3
                   
0.080 0.125 44 40 350 500 750 40 15 3
                   
0.125 0.250 39 34 500 750 1000 25 5 3
                     
0.250 0.500 33 26 750 1000 1500 25 5 3
                   
0.500 1.600 25 17 1000 1500 2000 25 5 3
                   
Note: In view of continuous improvements in design & process specifications given above are subject to change without notice.