Module 10

The interrupting rating of an FH-type circuit breaker is

65,000 A

The Organizations that tested and listed circuit breakers is/are

CSA and UL

The two most common types of over current protective devices are

Circuit breakers and fuses

Which of the following is defined by UL as a device that trips when a fault current to ground is 6mA or more

Class A

Circuit breakers are grouped for identification according to

Given current ranges

Which of the following types of drawings helps when sizing fuses for a given application

Single line Schematic

What name is given to the time-current relationship among a number of over-current devices connected in series

coordination

In residential applications, the available ground fault circuit current is seldom higher than

10,000 A

What color is printed on the labels or standard interrupting capacity circuit breakers

Black

Cartridge fuses used for branch circuit protection must be marked with the Ampere rating, voltage rating and the

Interrupting rating

Which type of GFCI receptacle offers protection only at the point of installation

Non-feed through type

The normal current rating of a circuit breaker is located

On the handle

NEC Article 240 covers the following

Over current protection

Why are single-Element fuses particularly suited for the protection of circuit breakers with low interrupting ratings

They have high speed of response to over currents

A current limiting circuit breaker preforms in a manner similar to conventional thermomagnetic circuit breakers at currents below a threshold of about

1000a