10 Questions
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.
Where is the service drop connected in an overhead service entrance?
From the nearest utility pole to the building service entrance point
What is the purpose of a service lateral?
To deliver energy from the electricity supply system to the wiring system of the premises served
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
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
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.
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.
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.
What are the underground service conductors between the transformer and the first distribution box inside the building called?
Service lateral
What is the common type of service wire installed by electric power supply companies for industrial, commercial, and residential houses?
Service drop
Test your knowledge of electrical systems and materials in building utilities with this quiz on electric service entrance definitions and the National Electrical Code (NEC). See how well you understand the portion of supply conductors that extends from the street main duct or transformer to the building's service or switchboard.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
