Chapter 1, Problem 15R

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19th Edition

Simmons

ISBN: 9781337516549

Textbook Problem

You will learn in Chapter 3 that residential lighting loads are based on 3 volt-amperes per ft^{2} (33 volt-amperes per m^{2}). Determine the minimum lighting load required for an area of 186 m^{2}. Do calculations for both feet squared and meters squared so you can see the difference in answers. To convert meters squared to feet squared, refer to Table 1-8.

To determine

Find the minimum lightning load required for the given area.

Explanation

**Given data:**

Rating of residential lightning load per unit area

The area for which the lightning load is to be calculated

**Formula used:**

Write the expression for rating of the lightning load as follows:

Here

**Calculation:**

**The minimum lightning load when the area is considered in terms of square feet is as follows:**

Refer Table 1-8 in the textbook and write the conversion factor between square feet and square meter as follows:

Use the conversion factor and convert the given area in terms of square meter as follows:

Substitute

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