When a motor overload or circuit breaker trips and /or blows fuses, certain procedures and tests should be carried out:

* lockout and tag out main circuit breaker;

* test insulation resistance of motor wires and windings by using megohm meter between T1, T2, & T3 leads and ground, then;

* test "T" leads to motor with ohmmeter for continuity and ohm-age of windings between A to B, B to C, A to C; each resistance should be within 1 or 2 ohms of each other; if the ohms readings are significantly d...
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