Question 1 of 10
What is the primary function of a panelboard or distribution board?
Panelboards distribute electrical power to various circuits, controlling and protecting them.
Question 2 of 10
Which of the following terms is commonly used in the UK for a residential panelboard?
Consumer unit is the term used in the UK for residential applications.
Question 3 of 10
What does NEC stand for?
NEC stands for National Electrical Code
Question 4 of 10
In a split-phase system in the US, what is the voltage between the two hot conductors?
In a split-phase system, the voltage between the two hot conductors is 240V.
Question 5 of 10
What unit is used to measure apparent power?
Apparent power is measured in Volt-Amperes (VA).
Question 6 of 10
What is the typical power factor assumed for residential buildings when calculating load?
The power factor in residential buildings is often close to unity (1).
Question 7 of 10
Which code is used in North America for sizing load centers?
The National Electrical Code (NEC) is used in North America
Question 8 of 10
If an appliance consumes 120V and 10A, what is its apparent power in VA?
VA = Volts x Amps = 120V x 10A = 1200 VA.
Question 9 of 10
What is the primary purpose of circuit breakers within a panelboard?
Circuit breakers protect circuits from overcurrents.
Question 10 of 10
Which of the following is NOT a term used to describe a panelboard?
A transformer is a separate electrical component, not a type of panelboard.
1 / 10
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