Probable Effect Concentration Quotients (PECQS) Practice Test

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What is the minimum ampacity requirement for service-entrance conductors before applying any adjustment or correction factors?

The sum of continuous load only
The sum of noncontinuous load plus continuous load
The sum of noncontinuous load only
The maximum load specified by the utility

The correct answer is: The sum of noncontinuous load plus continuous load

The minimum ampacity requirement for service-entrance conductors is determined by taking into account both continuous and noncontinuous loads. Continuous loads are defined as loads that are expected to run for three hours or more, while noncontinuous loads do not have this requirement. Calculating the minimum ampacity based on the sum of both loads ensures that the conductors can safely handle the total expected demand without being overloaded. This is a crucial aspect of electrical design and safety, as conductors that are not adequately sized for the total load can overheat, leading to potential hazards such as electrical fires or system failures. Thus, option B correctly reflects the need to account for the total load that will be placed upon the conductors, making it essential for ensuring that the service-entrance conductors are adequately rated for both expected continuous and noncontinuous demands.