101 Basic Series - Module 13 - CEU Education
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If the depth of the service section is deeper than the distribution section, the installation is referred to as Front Alignment.
A single IFS switchboard section can contain both a panelboard and a dry type transformer.
The device that provides a termination point for neutral wires from both the incoming service and the load is the _____.
If throwing more than ____ handles is required to disconnect all electrical service, an upstream main overcurrent protective device must be provided to cut all the branch circuits at once.
The neutral in a distribution panel is connected to the ground.
For safety reasons, the NEC requires the service entrance panel's neutral to be grounded.  Any downstream panels have their neutral _____. (except on separately derived systems)
What are the vertical and horizontal conductors called in a switchboard?
The NEC defines, prior to 2008, a lighting and appliance panelboard as having a maximum of 42 circuits (poles), at least 10% of the overcurrent devices at 30A or below, with neutral connections provided.
The rating that defines the current the protective device (fuse or circuit breaker) can interrupt safely is the _______ rating.
Surface-mount panelboards are generally used in industrial buildings, and basements of offices and commercial buildings.
This section divides power among branch circuit protection devices.
A panelboard is used in commercial and industrial applications while a loadcenter is primarily used in residential applications.
When planning for future expansion, if a customer asks for a protective device to be bolted into place and connected to the bus for a future load, this device is called a ___________.
A panelboard's bus bars can accommodate up to 1200A while a loadcenter is typically rated 200A.
A ground fault can occur from water splashing an electrical appliance or outlet.
Switchboards are expandable devices, while panelboards are not.
A panelboard can serve as a distribution point, receiving power from a panelboard or switchboard upstream.
The ______ is an NEC ruling which states that you must be able to throw no more than six handles into the off position to disconnect all electrical service.
A top- mounted, blank enclosure with space to pull cable is called a ________.
Bus bars move power between two or more components or circuits of a switchboard.