184.108.40.206.1 Electrical Actuation Means
(a) The plunger gripper shall be fully operational during a primary electrical system power failure.
(b) The elevator shall not be permitted to restart after a normal stop in the event of a failure within the electrical means used to actuate the gripper of any of the following:
(1) a single mechanically operated switch
(2) a single magnetically operated switch, contactor, or relay
(3) a single solenoid
(5) the software system
(6) the occurrence of a single ground