Exam 11: Wiring Applications

At times, lights are controlled by ____ switches and relays.

There are ____ general types of circuit breakers.

To minimize line drop, electrical services should be installed in a(n) ____ location to minimize the distance to the loads.

One of the rules for residential wiring is to install a 200-ampere, three-wire or larger service for a single-family dwelling.

____ fuses are the type most commonly used in industrial installations.

A(n) ____ control permits all of the lights or specific groups of lights to be controlled from one location.

A ground-fault circuit interrupter is a device that senses a small imbalance of current between the ungrounded (hot) conductor and the grounded (neutral) conductor.

A common design practice is to allow a circuit breaker to carry only ____ percent of its continuous current rating.

A(n) ____ is a place in the wiring system where conductors of opposite polarity make contact.

There are three common styles of switches used to control lights including ____.

A demand factor is the ratio of the maximum load used at any one time to the total connected load.

Fuses and circuit breakers have ____ current ratings.

A(n) ____ overcurrent device is a fuse or circuit breaker that opens the circuit much more quickly than the ordinary device does.

Most residential installation circuits are protected against overcurrent by 25-ampere or larger fuses or circuit breakers.

When calculating the load, it is common practice to start with the branch circuits and combine their loads at each panel.