Level 2 Module 10 Basic Electrical Construction Drawings Exam 2023 with complete solution
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Course
Level 2
Institution
Level 2
Level 2 Module 10 Basic Electrical Construction Drawings Exam 2023 with complete solution
These are types of automatic overload devices that are normally used in electrical circuits to prevent fires and the destruction of the circuit in its associated equipment.
Fuses and circuit breakers
Ci...
level 2 module 10 basic electrical construction dr
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Level 2 Module 10 Basic Electrical Construction Drawings
Exam 2023 with complete solution
These are types of automatic overload devices that are normally used in electrical
circuits to prevent fires and the destruction of the circuit in its associated
equipment.
Fuses and circuit breakers
Circuit breakers are classified according to the given
Current range
Each group of circuit breakers are classified by the largest
Ampere rating
Where is the amp rating of a circuit breaker located?
On the handle of the device
What color is printed on the labels of standard interrupting capacity circuit
breakers?
Black
The interrupting rating of a circuit breaker is as important in application as the
voltage and current ratings and should be considered
each time a Breaker is applied
In residential applications, the available fault current is seldom higher then
10,000 amps
Cartridges fuses used for branch circuit protection must be marked with the
ampere rating, voltage rating and the Interrupting rating.
This type of circuit breaker has an interrupting rating of 65,000 A symmetrical at
240 VAC
FH-type circuit breaker
At current below threshold of about 1000 A, the current limiting circuit breaker
performs in a manner similar to
Conventional thermomagnetic circuit breakers
NEC section 240
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