32 Questions
What is the service entrance defined as according to the National Electrical Code (NEC)?
The conductor and equipment for delivering energy from the electricity supply system to the wiring system of the premises served.
Where is the service entrance point for an overhead service wire typically located?
At the weather head
What does the acronym NEC stand for in relation to electrical codes?
National Electrical Code
What is a service drop in relation to overhead service entrance?
The connection from the nearest utility pole to the building's service entrance point
Which type of building might use an overhead service entrance?
Industrial, commercial, and residential houses
What is included in the types of service entrance mentioned in the text?
Overhead Service and Underground Service
What does the Underground Service Entrance consist of?
Conduit extending from the building to the property line and tapping to the main
What is the responsibility defined by the Service Point?
Defining responsibilities between the utility provider and the customer
What is included in the Service Entrance Equipment as per the text?
Method of measuring power, method of cutting off power, and overcurrent protection devices
What is the Electric Meter used for?
Measure and record electrical energy consumed
What is a Pole Mounted Transformer?
Transformer mounted overhead on poles
What does a Step-down Transformer do?
Reduce building system voltages to useable levels
How is a Single-phase Transformer defined?
Has a single primary winding and a single secondary winding
What are Transformers used for?
Transmitting and distributing power from the power plant to a substation
What is included in a Panel Board?
Cabinet or cutout enclosure placed in or against a wall or partition
What does a Step-up Transformer do?
Has a secondary voltage greater than its primary voltage
What is the purpose of the service entrance according to the National Electrical Code (NEC)?
Delivering energy from the electricity supply system to the wiring system of the premises served.
What are the two types of service entrance mentioned in the text?
Overhead Service and Underground Service
Where is the service entrance point typically located for an overhead service wire?
At the building service entrance point
What is the common type of service wire installed by electric power supply companies for industrial, commercial, and residential houses?
Overhead Service Entrance
What is connected from the nearest utility pole to the building service entrance point for an overhead service entrance?
Service drop
What is the service drop connected to for an overhead service entrance?
Weather head, down to the electric power meter
What is the purpose of the Electric Meter?
Measure and record electrical energy consumed
What is the responsibility defined by the Service Point?
Defines the responsibilities between the utility provider and the customer
What does a Pole Mounted Transformer refer to?
Transformer mounted overhead on a pole
What is the function of a Panel Board?
Acts as a power panel, load center, or distribution center
What is the purpose of a Step-down Transformer?
Reduces building system voltages to useable levels
What are Transformers used for?
Transmitting and distributing power from the power plant to a substation
What is the Underground Service Entrance made of?
Raceway (conduit) extending from the building to the property line
What does a Step-up Transformer do?
Steps up the voltage applied to it
What is the purpose of the Service Entrance Equipment?
Receives the service entrance conductors and contains metering equipment, main disconnect, and overcurrent protection devices
What is the primary purpose of a Single-phase Transformer?
To have a single primary winding and a single secondary winding
This quiz covers topics related to electrical materials, components, and service entrance as defined by the National Electrical Code (NEC). It includes terminology, definitions, and concepts related to building electrical systems and utilities.
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