NEC Requirement - ESD push buttons in separate conduit


Senior Member
Is there a code requirement for Emergency Stop Push button conductors to be in a separate conduit /multi-pair from regular control cable?


tom baker

First Chief Moderator
Staff member
I recall for motor controls, such as start stop switch, the control conductors can be in the same raceway with the motor conductors if they are functionally related, but can't find that rule. See 430.73 for physical protection
Since the NEC is primarily an installation standard, there is likely some IEC or NEMA standard on this, especially for E stops