To Calculate the Minimum Number of 20-Ampere Branch Circuits Required

question 21

Multiple Choice

To calculate the minimum number of 20-ampere branch circuits required in a dwelling, you should multiply the dwelling square footage by 3 volt-amperes to obtain total volt-amperes, divide by 120 volts to obtain the total amperes, and finally, ____.

• A) multiply by 20 and round up to obtain the number of circuits
• B) divide by 20 and round down to obtain the number of circuits
• C) divide by 20 and round up to obtain the number of circuits
• D) multiply by 20 and round down to obtain the number of circuits

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Definitions:

Epidemiology

Study of the frequency and distribution of a disorder, or a group of disorders, in a population.

Frequency

The rate at which something occurs or is repeated over a particular period of time or in a given sample.

Distribution

In statistics, a way of describing the observations of a variable, including their spread and central tendency.

Perfect Correlation

A statistical relationship where two variables move in sync, either always increasing or decreasing together, represented by a correlation coefficient of +1 or -1.