Low Voltage Circuit Protection - CEU
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1

If the ambient temperature of a circuit breaker falls below 40 degrees C, the breaker will carry _________ current.

2
In their enclosures, ACBs are rated at what percentage of their current rating?   
3

What is the main mounting method for residential circuit breakers?

4
The main difference between MCCB & Power Breaker standard is the ability to remain ________ longer during fault conditions.
5

An _______________ is unwanted or intermittent flow of current between two conductors that can ignite nearby combustible material.

6
The pictured image is a _________________ circuit breaker?
7

Miniature circuit breakers are used to switch and protect the lowest common distribution voltage in an electrical system

8
Of the two most common low voltage power circuit breaker mounting methods, the fixed mount is the most commonly used in the US because it is less expensive.
9

The function of the Trip Unit is to close the breaker, and reconnect the circuit in the event of a short circuit or prolonged overload of current.

10

The function of the arc chute in a molded case circuit breaker is to ______ and ______ the arc.