101 Basic Series - Module 13 - CEU Education
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The rating that defines the current the protective device (fuse or circuit breaker) can interrupt safely is the _______ rating.
This section divides power among branch circuit protection devices.
What are the vertical and horizontal conductors called in a switchboard?
Surface-mount panelboards are generally used in industrial buildings, and basements of offices and commercial buildings.
A panelboard's bus bars can accommodate up to 1200A while a loadcenter is typically rated 200A.
A panelboard is used in commercial and industrial applications while a loadcenter is primarily used in residential applications.
Switchboards are expandable devices, while panelboards are not.
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 ___________.
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.
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)
A single IFS switchboard section can contain both a panelboard and a dry type transformer.
The neutral in a distribution panel is connected to the ground.
Bus bars move power between two or more components or circuits of 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.
A panelboard can serve as a distribution point, receiving power from a panelboard or switchboard upstream.
A top- mounted, blank enclosure with space to pull cable is called a ________.
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.
The device that provides a termination point for neutral wires from both the incoming service and the load is the _____.
A ground fault can occur from water splashing an electrical appliance or outlet.
If the depth of the service section is deeper than the distribution section, the installation is referred to as Front Alignment.