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