Exam 1: Plans and Sitework

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Discuss the role of the building location on the site plan.

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The building location is given on the site plan by referring to existing points such as the centerline of a street. If the electrical contractor and the crew arrive on the site before the general contractor arrives, they are not required to "stake out" (locate) the building. However, they should be able to determine its approximate location. A site plan shows the property lines and the centerlines of the street from which the electrician can locate the building and other site improvements.

Outlet boxes and device boxes use their nominal measurement as their _________size.

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If the electrical system to be installed operates at a potential higher than _________volts, the nonmetallic conduit must be encased in not less than 2 in. (50mm) of concrete.

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The standard format symbol for a(n)_________ consists of two unshaded concentric circles.

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The United States is the last major country in the world not using the_________ system as the primary system of measurement.

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The metric system is a "base­10" or " _________" system in that values can be easily multiplied or divided by 10 or powers of 10.

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How many times larger is a megawatt than a kilowatt?

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A_________ is where a product has been designed to SI metric dimensions.

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_________are given on the site plan to indicate the existing and the new grading levels.

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What precautions should be taken if direct burial cable is used?

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In the SI system, what is the prefix corresponding to ten times the base unit?

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Underground raceways terminate in underground _________.

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What is the difference between the US and SI systems for writing numbers with many digits?

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The drainage hole at the base of a telephone pole is known as a _________hole.

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Telephone service is provided by conduit that runs from the telephone pole. The conduit runs underground at a minimum depth of _________inches.

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When can rigid metal conduit be installed directly in the soil for underground raceways?

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The_________ , as given on the site plan, is the reference point from which all elevations are located.

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Discuss grounding as it relates to lighting standards.

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A(n)_________ indicates the level of the lower edge of the inside of a conduit entering a manhole.

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Although _________are more expensive to install, they provide many advantages that direct burial installations do not.

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