Exam 11: Wiring Applications

There are ____ general types of circuit breakers.

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

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

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

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

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

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

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

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

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

Which of these is one of the three common styles of switches used to control lights?

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

Fuses and circuit breakers have ____ current ratings.

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

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.