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Electric Service Entrance Definitions and NEC Quiz

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Electric Service Entrance Definitions and NEC Quiz

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Questions and Answers

What does the National Electrical Code (NEC) define as a service entrance?

The underground service conductors between the street main duct or transformer and the building service entrance point.

The common type of service wire installed by electric power supply companies for industrial, commercial, and residential houses.

The portion of the supply conductors which extends from the street main duct or transformer to the service or switchboard of the building supply.

The conductor and equipment for delivering energy from the electricity supply system to the wiring system of the premises served. (correct)

Where is the service drop connected in an overhead service entrance?

From the electric power meter to the nearest utility pole

From the nearest utility pole to the building service entrance point (correct)

From the electric power meter to the weather head

From the building service entrance point to the electric power meter

What is the purpose of a service lateral?

To connect the electric power meter to the building service entrance point

To deliver energy from the electricity supply system to the wiring system of the premises served (correct)

To connect the nearest utility pole to the building service entrance point

To provide a common type of service wire for industrial, commercial, and residential houses

Where does the service lateral extend from and to?

From the street main duct or transformer to the service or switchboard of the building supply Signup and view all the answers

What is the purpose of the weather head in an overhead service entrance?

To provide a point of entry for the service drop into the building Signup and view all the answers

What does the National Electrical Code (NEC) define as a service entrance?

The conductor and equipment for delivering energy from the electricity supply system to the wiring system of the premises served. Signup and view all the answers

Where is the service drop connected in an overhead service entrance?

To the building service entrance point, entering through the weather head, down to the electric power meter. Signup and view all the answers

What is the purpose of the weather head in an overhead service entrance?

To provide a weatherproof termination for the service drop conductors where they connect to the building's service entrance conductors. Signup and view all the answers