The motor energy storage control circuit is disconnected

What does a disconnect mean mean in a motor branch circuit?

The disconnecting means must open all ungrounded conductors and indicate the “off” and “on” positions. A disconnect may open a grounded conductor if it simultaneously opens the ungrounded conductors. Learn to locate the controller and local motor disconnecting means in a motor branch circuit.

Can a motor controller be connected to a disconnect?

The disconnecting means must disconnect the controller and the motor and cannot be part of the controller. However, installing a disconnect and motor controller within the same enclosure is permissible. An example is a combination of a fused switch and a magnetic starter.

Can a group of coordinated motor controllers use a single disconnecting means?

Exception N° 2: A group of coordinated motor controllers driving several parts of a machine or apparatus may use a single disconnecting means. The disconnecting means must be in sight of the motor controllers and all of them in sight of the machine or apparatus.

What is the distance between the controller and the disconnecting means?

The distance between the controller and the disconnecting means cannot exceed 15 m. The fused switch is out of sight from the controller and may be a lock-open or non-lock-open type. Figure 3. Section of the motor circuit to place the controller disconnecting means. Image used courtesy of Lorenzo Mari

How do you disconnect a motor controller?

Provide an individual disconnecting means for each motor controller to disconnect the motor controller. Locate the disconnecting means in sight from the motor controller location. This section mandates a means to disconnect each motor branch circuit.

Where should a disconnecting means be located?

A disconnecting means shall be provided at the energy storage system end of the circuit. Fused disconnecting means or circuit breakers shall be permitted to be used. A second disconnecting means located at the connected equipment shall be installed where the disconnecting means required by 706.7(E)(1) is not within sight of the connected equipment.