2005 N.E.C. 430.73
Where one side of the motor control circuit is grounded, the
motor control circuit SHALL be arrainged so that a Accidental ground in the control circuit remote from the motor controller will
(1) not start the motor and ,
(2) Not bypass manually operated shutdown device or automatic safety shutdown devices.
If you use the neutral on a control circuit an unintentional grounding can start the equipment.
Neutral CANNOT be used for control circuits.
430.31 (Specifies intended uses of Overload devices.)
Last edited by Yoopersup; 04/13/09 04:31 PM.
